These consolidated actions1 for declaratory relief present the common issue whether plaintiff shipyard owners will have any causes of action for damages under the law of eminent domain arising out of the impairment of their access to the Stockton Deep Water Ship Channel as a result of the construction of two' proposed fixed low level parallel bridges spanning a connecting navigable waterway to which their properties are riparian. Separate judgments on the pleadings in favor of defendant State of California were entered below and all plaintiffs have appealed.
The record discloses that although the judgments were entered upon an order granting separate motions for judgment on the pleadings, defendant filed no answer in either case. Its motion therefore had the purpose and effect of a *412general demurrer (2 Witkin, Cal. Procedure, p. 1706) and on review is to be tested by the same rules. (Dragna v. White (1955) 45 Cal.2d 469, 470 [289 P.2d 428] ; Chas. L. Harney, Inc. v. Contractors’ etc. Board (1952) 39 Cal.2d 561, 565 [247 P.2d 913].) Since the motion was used to perform the function.of a general demurrer, it ‘'reaches only to the contents of the pleading and such matters as may be considered under the doctrine of judicial notice” (Weil v. Barthel (1955) 45 Cal.2d 835, 837 [291 P.2d 30]) and “admits all material and issuable facts pleaded.” (Flores v. Arroyo (1961) 56 Cal.2d 492, 497 [15 Cal.Rptr. 87, 364 P.2d 263].) We proceed to set forth the facts in the light of these principles.2
The Stockton Deep Water Ship Channel is a navigable tidal waterway extending from the mouth of the San Joaquin River to the Port of Stockton. From the turning basin adjoining the port, the channel continues easterly for about 5,000 feet and comes to a dead end within the confines of the city. This portion of the waterway is known as the Upper Stockton Channel. Plaintiffs Colberg3 and Stephens Marine, Inc. (Stephens), own real property in the City of Stockton riparian to the Upper Stockton Channel upon which for more than sixty years they have conducted shipyards for the construction and repair of yachts and ocean-going vessels. Both yards are improved with marineways, buildings, docks and allied facilities. Colberg’s property consists of approximately eight acres; Stephens’ of approximately six. Ships and other craft now using the Upper Stockton Channel can proceed to the turning basin and the Stockton Deep Water Ship Channel and thereupon navigate to the open sea by way of the Carquinez Straits and San Francisco Bay.
*413The state proposes to construct twin stationary freeway bridges across the Upper Stockton Channel between plaintiffs’ properties and the turning basin. The vertical clearance of these bridges is to be, generally speaking, 45 feet above the water line. Pursuant to federal law the state applied to the Secretary of the Army and the Chief of Engineers for a permit to build such bridges. (See 33 U.S.C.A. § 525, subd. (b).) After a public hearing, consideration of the views of various interested persons including these plaintiffs, and an extensive economic survey, approval of the location and plans of the bridges was granted by federal authorities in February 1964, subject to conditions not here necessary to be detailed.
Colberg alleges that 81 percent of its current business involves ships standing more than 45 feet above the water line. Plaintiff Stephens alleges that 35 percent of its current business involves such ships. The present minimum clearance between plaintiffs’ yards and the Pacific Ocean is 135 feet, established by the Antioch Bridge. Plaintiffs allege in substance that after the construction of the proposed bridges, no vessel with fixed structure in excess of 45 feet above the water line will be able to enter their respective shipyards; that there is no other access by water to the yards from the San Joaquin River, San Francisco Bay and the oceans of the world; and that plaintiffs, their properties and their businesses will suffer loss and damages because of the impairment of access resulting from the construction of the bridges.4 Plaintiffs in both actions allege that an actual controversy exists (see Code Civ. Proc., § 1060) between each of them and the state as to whether the alleged impairment of access to “the main channel of the San Joaquin River ’' is compensable.
Counsel for the state pointed out to us at oral argument that a bridge of vertical clearance sufficient to accommmodate plaintiffs’ shipyard traffic would involve greatly increased construction costs because it would entail extended approaches;5 that the added height of such approaches would have an *414adverse effect upon intangible community values; and that a draw or swing bridge would be unsuitable for freeway purposes.
The trial court granted the state’s motion for judgment on the pleadings in both cases and entered judgments accordingly. In its memorandum opinion it held that diminution of the scope of plaintiffs’ access from their respective properties to the Stockton Deep Water Ship Channel as a result of the state’s proposed action relative to its navigable waters would not constitute a taking or damaging of private property for which just compensation would be required.
It is not disputed that an actual controversy exists between the parties on this question; that if plaintiffs were required to await construction of the bridge before commencing an action at law, they would suffer irreparable damage because of interference with their businesses during construction; that a declaratory judgment resolving the question of compensability in their favor prior to completion of the bridge project will permit relocation of their respective operations with a minimum of inconvenience; and that plaintiffs will be unable to plan their businesses or enter into necessary long-term business contracts, until such question is settled. We are satisfied that under the above circumstances plaintiffs were entitled to invoke declaratory relief.6
The sole question in this ease is whether the alleged impair*415ment of plaintiffs’ access to the Stockton Deep Water Ship Channel constitutes a taking or damaging of private property within the meaning of article I, section 14 of the California Constitution.7 In order to answer this question we are led to an examination of the interest of the state in its navigable waters; in the course of this examination we explain the relationship between the state’s power to deal with its navigable waters and the extent of its constitutional duty to make compensation for damage caused by the exercise of that power.
In order to put the controversy into proper focus, we must first make some preliminary observations concerning plaintiffs’ position and the nature and extent of their claim. First, it is clear that plaintiffs must assert the taking or damaging of a private right in order to bring themselves Avithin the protective embrace of article I, section 14. Thus, they cannot ground tlieir claim in the right of navigation, for this is a public right from the abridgment of which plaintiffs Avill suffer no damage different in character from that to be suffered by the general public.8 (Jarvis v. Santa Clara Valley R.R. Co. (1877) 52 Cal. 438, 440 ; San Francisco Sav. Union v. R.G.R. Petroleum etc. Co. (1904) 344 Cal. 134,139 [77 P. 823, 303 Am.St.Rep. 72, 1 Ann.Cas. 382, 66 L.R.A. 242] ; Miller v. Mayor of New York (1883) 109 U.S. 385, 394-395 [27 L.Ed. 971, 974-975, 3 S.Ct. 228] ; Frost v. Washington County RR. Co. (1901) 96 Me. 76, 85-86 [51 A. 806] ; Marine Air Ways v. State of New York (1951) 201 Misc. 349. 350 [104 N.Y.S 2d 964] and cases tliere cited, affd. 280 App.Div. 1023 [13 6 N.Y.S.2d 778] ; 56 Am.Jur., Waters, § 216, pp. 677-678.) Instead, they must have recourse to the private right of an owner riparian to a navigable waterway to have access to the channel. (See San Francisco Sav. Union v. R.G.R. Petroleum *416etc. Co., supra, 144 Cal. 134, 139 ; Shirley v. Bishop (1885) 67 Cal. 543 [8 P. 82] ; 56 Am.Jur., Waters, § 216, p. 677.) However, it appears that the access from plaintiffs’ property to the navigable portion of the waterway to which they are riparian, to wit, the Upper Stockton Channel, will not be impaired by the proposed project, so that their private right of access, if limited to its traditional scope, will not be “taken or damaged” and no claim for compensation can arise. It is therefore plaintiffs’ position that the private right of access must be expanded. They assert that the construction of the bridge in question will render their private right of access useless insofar as it pertains to vessels with a fixed structure more than 45 feet above the waterline; that after such construction they “can launch ships, but they can go nowhere.” Action which renders a right valueless, they urge, effectively “takes or damages ’ ’ that right.
We deem it unnecessary to decide this question, for we have determined that, whatever the scope of plaintiffs’ right of riparian access as agadnst other private persons, that right must yield without compensation to a proper exercise of the power of the state over its navigable waters. It is to a discussion of this latter power that we now turn.
The State of California holds all of its navigable waterways and the lands lying beneath them ‘ as trustee of a public trust for the benefit of the people.” (People v. Gold Run Ditch & Min. Co. (1884) 66 Cal. 138, 151 [4 P. 1152, 56 Am.Rep. 80] ; see also Martin v. Waddell (1842) 41 U.S. (16 Pet.) 367, 410 [10 L.Ed. 997, 1012] ; Shively v. Bowlby (1894) 152 U.S. 1, 11-18 [38 L.Ed. 331, 336-338, 14 S.Ct. 548] ; Eldridge v. Cowell (1854) 4 Cal. 80, 87 ; Ward v. Mulford (1867) 32 Cal. 365, 372 ; People v. California Fish Co. (1913) 166 Cal. 576, 584-585 [138 P. 79] and eases there cited ; Henry Dalton & Sons v. Oakland (1914) 168 Cal. 463, 465, 467-468 [143 P. 721] ; City of Long Beach v. Lisenby (1917) 175 Cal. 575, 579 [166 P. 333] ; Atwood v. Hammond (1935) 4 Cal.2d 31, 40 [48 P.2d 20] ; Katenkamp v. Union Realty Co. (1936) 6 Cal.2d 765. 769 [59 P.2d 473] ; Miramar Co. v. City of Santa Barbara (1943) 23 Cal.2d 170, 174 [143 P.2d 1] ; see generally 51 Cal.Jur.2d pp. 466-467, 508-509 ; 56 Am.Jur. pp. 698-699.) Its power to control, regulate and utilize such waters within the terms of the trust is absolute except as limited by the paramount supervisory power of the federal government over navigable waters. (Gray v. Reclamation *417Dist. No. 1500 (1917) 174 Cal. 622, 637 [163 P. 1024] ; see Shively v. Bowlby, supra, 152 U.S. 1, 26-31 [38 L.Ed. 331, 341-343] ; United States v. Mission Rock Co. (1903) 189 U.S. 391, 404 [47 L.Ed. 865, 869, 23 S.Ct. 606].) The nature and extent of the trust under which the state holds its navigable waterways has never been defined with precision, but it has been stated generally that acts of the state with regard to its navigable waters are within trust purposes when they are done “for purposes of commerce, navigation, and fisheries for the benefit of all the people of the state. ’ ’ (Mallon v. City of Long Beach (1955) 44 Cal.2d 199, 205 [282 P.2d 481] ; see also People v. California Fish Co., supra, 166 Cal. 576, 584585 ; City of Long Beach v. Lisenby, supra, 175 Cal. 575, 579 (“for purposes of navigation and commerce”) ; City of Long Beach v. Marshall (1938) 11 Cal.2d 609, 614 [82 P.2d 362] (“for navigation, commerce and fishing”) ; City of Newport Beach v. Fager (1940) 39 Cal.App.2d 23, 28 [102 P.2d 438] ; People v. Hecker (1960) 179 Cal.App.2d 823, 840 [4 Cal.Rptr. 334].)
The courts have construed the purposes of the trust with liberality to the end of benefiting all the people of the state. In the early case of People ex rel. Board of State Harbor Comrs. v. Potrero & Ray View R.R. Co. (1885) 67 Cal. 166 [7 P. 445], defendant, under authority of a franchise granted by the Legislature, constructed a railroad bridge across Islais Creek, a navigable waterway. The bridge was an obstruction to navigation, and the Board of State Harbor Commissioners sought to have it abated as a nuisance. It was contended that the legislative act granting the right to build the bridge was in conflict with the act of Congress admitting California into the Union, which act provided that “ all the navigable waters within the State shall be common highways and forever free, as well to the inhabitants of said State as to the citizens of the United States, without any tax, impost, or duty therefor. ’ ” This court rejected this contention, holding inter alia that “while the power of the State with respect to the construction, regulation, and control of bridges ... is subordinate to that of Congress, still until Congress acts on the subject, the power of the State is plenary.” (67 Cal. at p. 168.) Though we there made no explicit reference to the extent of the trust relating to navigable waters, we impliedly held that the spanning of navigable waters by a railroad bridge was an act *418within the trust purposes of “commerce, navigation, and fisheries ^ ^
In Boone v. Kingsbury (1928) 206 Cal. 148 [273 P. 797], the state surveyor-general had refused to issue to plaintiffs permits to prospect for oil and gas upon tidal lands covered by navigable sea waters upon the ground, inter alia, that the granting of such permits would constitute an act without the scope of the trust because such prospecting would not be “in aid and furtherance of commerce and navigation.” We rejected that contention, holding that the relationship of gasoline to commerce was manifest. “Gasoline is the power that largely moves the commerce of nations over lands and sea; . . . Gasoline is so closely allied with state and national welfare as to make its production a matter of state and national concern. If it can be said of any industry that its output is ' in aid and furtherance of commerce and navigation, ’ and its production ‘a public benefit,’ the production of gasoline, by reason of the motive elements that inhere in it and its universal use and adaptability to varied uses and the convenient and portable form in which it may be confined, would entitle it to a high classification in the scale of useful, natural products. It is a mover of commerce and fills the office of ‘a public benefit.’ ” (206 Cal. at p. 181.)
Finally, in the ease of Gray v. Reclamation Dist. No. 1500, supra, 174 Cal. 622, plaintiffs sought to enjoin the operations of defendant district, which was engaged in efforts to reclaim land and prevent flooding, with incidental benefits to navigation, near the confluence of the Sacramento and Feather Rivers. We there rejected plaintiffs’ contention that the state had no power to deal with its navigable waters unless its dominant purpose was to improve navigation. “The supreme control of the state over its navigable waters was early declared in Eldridge v. Cowell, 4 Cal. 80, approved in United States v. Mission Rock Co., 389 U.S. 391 [47 L.Ed. 865, 23 S.Ct. 606]. This right of control embraces within it not alone the power to destroy the navigability of certain waters for the benefit of others, but extends in the case of streams to the power to regulate and control the navigable or non-navigable tributaries, as in the debris cases, to the erection of structures along or across the stream, to deepening or changing the channel, to diverting or arresting tributaries; in short, to do anything subserving the great purpose, ...” (Italics added.) (174 Cal. at p. 636.)
*419We deem it too clear to warrant the citation of further authority that the state, as trustee for the benefit of the people, has power to deal with its navigable waters in any manner consistent with the improvement of commercial intercourse, whether navigational or otherwise. It is equally clear, however, that the question of governmental power is quite different from that of compensation for damage caused by the exercise of such power. It is to the latter question that we now turn.
We have referred above to the paramount supervisory power of the federal government over navigable waters. This power, though superior to that of the state, is not grounded in ownership of the navigable waterways upon which it operates, but rather derives from the commerce clause of the United States Constitution, and it has been stated that it may properly be exercised only in order to aid navigation. (Port of Seattle v. Oregon & W. R.R. Co. (1921) 255 U.S. 56, 63 [65 L.Ed. 500, 506, 41 S.Ct. 237] ; United States v. Kansas City life Ins. Co. (1950) 339 U.S. 799, 808 [94 L.Ed. 1277, 1284, 70 S.Ct. 885] ; see also United States v. River Rouge Improv. Co. (1926) 269 U.S. 411, 419 [70 L.Ed. 339, 345, 46 S.Ct. 144] ; but see United States v. Twin City Power Co. (1956) 350 U.S. 222 [100 L.Ed. 240, 76 S.Ct. 259] ; United States v. Commodore Park (1945) 324 U.S. 386, 391-392 [89 L.Ed. 1017, 1021-1022, 65 S.Ct. 803] ; United States v. Gerlach Live Stock Co. (1950) 339 U.S. 725 [94 L.Ed. 1231, 70 S.Ct. 955, 20 A.L.R.2d 633] ; see generally Morreale, Federal Power in Western Waters (1963) 3 Nat’l Resources J. 1, 9-19.) The Fifth Amendment to the United States Constitution9 is of course applicable to the exercise of the federal navigational power within its proper scope, just as article I, section 14 of the state Constitution is applicable to the exercise of state power over navigable waters, but in many cases compensation for “damage” caused by exercise of the federal power is denied because the rights and values affected are deemed to be burdened with the so-called federal “navigation servitude.”10 *420Among the rights so burdened is that of the access from riparian land to the affected navigable waterway. (Gibson v. United States (1897) 166 U.S. 269 [41 L.Ed. 996, 17 S.Ct. 578] ; see Northern Transp. Co. v. Chicago (1878) 99 U.S. 635 [25 L.Ed. 336].) The limits of the servitude are reached, however, and just compensation must be paid in spite of the fact that the power has been exercised within its scope, when permanent physical encroachment upon or invasion of land riparian to the navigable waterway but above the ordinary high-water mark results. (See United States v. Chicago, M., St.P. & P.R.R. Co. (1941) 312 U.S. 592 [85 L.Ed. 1064, 61 S.Ct. 772] ; United States v. Commodore Park, supra, 324 U.S. 386, 391 [89 L.Ed. 1017, 1021] ; cf. United States v. Kansas City Life Ins. Co., supra, 339 U.S. 799 ; Pumpelly v. Green Bay etc. Co. (1871) 80 U.S. (13 Wall.) 166 [20 L.Ed. 557].)
As we have shown above, the power of the State of California to deal with its navigable waters, though subject to the superior federal power, is considerably wider in scope than that paramount power. The state, as owner of its navigable waterways subject to a trust for the benefit of the people, may act relative to those waterways in any manner consistent with the improvement of commercial traffic and intercourse. We are of the further view that the law of California burdens property riparian or littoral to navigable waters with a servitude commensurate with the power of the state over such navigable waters, and that “when the act [of the state] is done, if it does not embrace the actual taking of property, but results merely in some injurious effect upon the property, the property owner must, for the sake of the general welfare, yield uncompensated obedience.’’ (Gray v. Reclamation Dist. No. 1500, supra, 174 Cal. 622, 636.)
We have arrived at this conclusion after an examination of cases from other jurisdictions. It appears that in some states the servitude operates only when the state acts upon its navigable waters for the purpose of improving navigation, and that private rights “damaged’’ by acts not in aid of navigation are therefore compensable. (Beidler v. Sanitary Dist. (1904) 211 Ill. 628, 637 [71 N.E. 1118, 67 L.R.A. 820] ; Natcher v. City of Bowling Green (1936,) 264 Ky. 584, 592-593 [95 S.W.2d 255] ; State ex rel. Andersons v. Masheter (1964) 1 Ohio St.2d 11, 12-13 .[203.N.E.2d.325] ; In re .Construction of Walnut Street Bridge (1899.) 191 Pa. 153 [42 A. 88] ; *421Conger v. Pierce County (1921) 116 Wash. 27, 31 [198 P. 377, 18 A.L.R. 393] ; cf. Green Bay & Mississippi Canal Co. v. Kaukauna Water Power Co. (1895) 90 Wis. 370, 398 [61 N.W. 1121, 48 Am.St.Rep. 937, 28 L.R.A. 443] ; Michaelson v. Silver Beach Improv. Assn., Inc. (1961) 342 Mass. 251 [173 N.E.2d 273, 91 A.L.R.2d 846].) This appears to be the law of the State of New York. (Marine Air Ways v. State of New York, supra, 201 Misc. 349, 350 ; Crance v. State of New York (1954) 205 Misc. 590, 593 [128 N.Y.S.2d 479], modified 284 App.Div. 750 [136 N.Y.S.2d 156], reinstated 309 N.Y. 680 [128 N.E.2d 324].)11 Other jurisdictions hold as we do in the instant case, that the state’s servitude operates upon certain private rights,12 including those of access, whenever the state deals with its navigable waters in a manner consistent with the public trust under which they are held. (Lovejoy v. Nor-walk (1930) 112 Conn. 199 [152 A. 210] ; Frost v. Washington County R.R. Co., supra, 96 Me. 76, 85-87 ; Nelson v. DeLong (1942) 213 Minn. 425 [7 N.W.2d 342] ; Crary v. State Highway Com. (1953) 219 Miss. 284, 293-296 [60 So.2d 468] ; Darling v. City of Newport News (1918) 123 Va. 14 [96 S.E. 307, 3 A.L.R. 748], affd. 249 U.S. 540 [63 L.Ed. 759, 39 S.Ct. 371] ; Milwaukee-Western Fuel Co. v. Milwaukee (1913) 152 Wis. 247 [139 N.W. 540].) We are of the opinion that this view is supported not only by the present law of California, but also by considerations of sound public policy.13
The limitation of the servitude to cases involving a strict navigational purpose stems from a time when the sole use of *422navigable waterways for purposes of commerce was that of surface water transport. (See Morreale, op. cit., at p. 26.) That time is no longer with us. The demands of modern commerce, the concentration of population in urban centers fronting on navigable waterways, the achievements of science in devising new methods of commercial intercourse—all of these factors require that the state, in determining the means by which the general welfare is best to be served through the utilization of navigable waters held in trust for the public, should not be burdened with an outmoded classification favoring one mode of utilization over another.
It is clear that the conclusions above expressed dispose of plaintiffs’ contention that their right of access to the navigable waters fronting on their respective properties must, in order to be of utility, include the right to navigate freely to the sea.14 Whatever the scope and character of their right to have access to those navigable waters,15 we hold that such right is burdened with a servitude in favor of the state which comes into operation when the state properly exercises its power to control, regulate, and utilize such waters.
In City of Newport Beach v. Fager, supra, 39 Cal.App.2d 23, defendants’ access to navigable waters over their littoral *423land was wholly cut off when the city, a political subdivision of the state, filled and reclaimed the tidelands in front of their land. When the city sought to quiet title to the lands thus filled, defendants contended that they had at least a right of access over such lands to navigable water. The court rejected this contention. “We are satisfied that the correct rule is that the littoral owner of uplands upon a navigable bay has no right of access to the waters of the bay over intervening tide lands, whether filled or unfilled, which have been granted by the state to a city in trust for the purpose of improving such navigable bay in furtherance of commerce and navigation. [Citations.] Although it is true that as against a stranger a littoral owner of upland bordering upon navigable waters may not be deprived of his right of access to such waters[16] no such right exists in favor of such littoral owner as against the state or its grantee in the exercise of a lawful use or purpose. ” (39 Cal.App.2d at p. 28 ; see also Henry Dalton & Sons Co. v. Oakland, supra, 168 Cal. 463, 467 ; People v. Hecker, supra, 179 Cal.App.2d 823, 840.) We are neither advised of, nor can conceive of, any reason why rules relating to one kind of navigable waters, to wit, tidewaters, should not be applied with equal reason to similar situations involving other kinds of navigable waters. In any event, we take judicial notice of the fact that tidal influence extends some distance up the San Joaquin River past the Port of Stockton. (See Witkin, Cal. Evidence (2d ed. 1966) §§ 174-176, pp. 160-163.)
We also reject plaintiffs’ contention that our highway access cases (see Bacich v. Board of Control (1943) 23 Cal.2d 343 [144 P.2d 818] ; Breidert v. Southern Pac. Co. (1964) 61 Cal.2d 659 [39 Cal.Rptr. 903, 394 P.2d 719]) require that compensation be paid for any substantial impairment of plaintiffs’ right of access. We are not persuaded that the analogy between highway access and navigational access will bear close scrutiny. The right of access to a land highway *424derives from the “land service road” concept, whereby roads are conceived of as arteries constructed through condemnation of private land for the purpose of serving other land abutting on them, rather than for the purpose of serving public traffic passing over them. (See Note (1965) 38 So.Cal.L.Rev. 689, 690, and authorities cited in fn. 9 thereof.) Principles applicable to such a right cannot reasonably be extended to the case of navigable waterways, which constitute a natural resource retained within the public domain for the purpose of serving public traffic in accordance with the greatest common benefit.
Finally, we emphasize that the state servitude upon lands riparian or littoral to navigable waters, like the federal servitude burdening such lands, does not extend to cases wherein the proper exercise of state power results in actual physical invasion of or encroachment upon fast lands. In the case of Miramar Co. v. City of Santa Barbara, supra, 23 Cal. 2d 170, plaintiff was the owner of lands littoral to a navigable bay and defendant, a political subdivision of the state, constructed a permanent breakwater in the bay about three miles to the west of plaintiff’s property. The effect of this breakwater upon natural drifts and currents operated in the course of time to denude plaintiff’s property of sandy beach, rendering the property valueless as a beach resort. It was alleged that defendant, before it built its breakwater, knew that the effect complained of would occur. Plaintiff sued in inverse condemnation, and the trial court entered a judgment of dismissal after sustaining defendants ’ demurrer without leave to amend. Upon affirmance of the judgment by this court it was said: “Plaintiff’s littoral right to sandy water [which provided the accretion necessary to offset tidal washing], like its littoral right to access to the ocean, was derived entirely from the proximity of plaintiff’s land to the ocean. It gave to plaintiff’s land the advantage of sandy accretions. Nevertheless, the enjoyment of that advantage did not constitute a right to its perpetuation, for plaintiff’s littoral rights were always subordinate to the state’s right to improve navigation.[17] The duration of the sandy accretions depended entirely upon the continuation of the littoral right, which from the beginning was subject to termination by the state. The withdrawal *425of the sandy accretions, constituting the damage to plaintiff’s land, was an incidental consequence of the state’s use of the public domain for a public interest that was at all times superior to private littoral rights. There has therefore been no taking or damaging of private property for public use within the meaning of article I, section 14, of the California Constitution.” (23 Cal.2d at p. 176.) In a separate concurring opinion, it was said that direct physical encroachment or invasion upon plaintiff’s lands was required in order that there be “a taking within the meaning of the constitutional provision.” (23 Cal.2d at p. 178.) After reference to certain eases of the United States Supreme Court to which we have adverted above (e.g., Pumpelly v. Green Bay Co., supra, 80 U.S. (13 Wall.) 166) the concurring opinion concluded that “The doctrine of taking under the Fifth Amendment has never been extended beyond the rule stated, and certainly there is no necessity for doing so under a constitutional provision which provides compensation for both taking and damaging.” (23 Cal.2d at pp. 178-179.) Three justices of the court dissented upon the basis that under the facts a physical taking of the plaintiff’s land was involved.
It therefore appears that this court in the Miramar case, though divided as to the proper result under the facts there at issue, reached fundamental agreement on the extent to which the state, through the proper exercise of its trust power to deal with navigable waters, may impair without compensation rights appurtenant to property riparian or littoral to such waters. The servitude with which such property is burdened precludes compensation for impairment or curtailment of all rights not damaged by permanent physical invasion of or encroachment upon fast lands; when the exercise of the power does cause such physical invasion or encroachment, the servitude is inapplicable and rights damaged as a result are compensable in accordance with article I, section 14, of the state Constitution.
We hold that plaintiffs’ right of access from their respective riparian properties to the waters of the channel, whatever its scope as against private parties, is burdened with a servitude in favor of the state and that, since there is here no direct physical invasion of, or encroachment upon, said properties by the state, plaintiffs are not entitled to compensation for the abridgment or .diminution, if any, of such right
*426of access as a result of the lawful exercise of the state’s power to regulate, control and deal with its navigable waters.
The judgments are, and each of them is affirmed.
Traynor, C. J., McComb, J., Tobriner, J., and Burke, J., concurred.
The trial court granted defendant's motion for consolidation of both actions "for hearing and trial.” Appellants have prepared a single record on appeal but filed separate briefs.
In each, action the court made and filed findings of fact and conclusions of law. Since the granting of each motion had the effect of an order sustaining a general demurrer and since there was no “trial of a question of fact by the court” (Code Civ. Proc., § 632), there was nothing to find. The findings of fact and conclusions of law were not required and we have disregarded them. (Taylor v. Palmer (1866) 31 Cal. 240, 257 ; Bradley Co. v. Ridgeway (1936) 14 Cal.App.2d 326, 330 [58 P.2d 194] ; see also Flynn v. Flynn (1951) 103 Cal.App.2d 91, 96-97 [229 P.2d 5] ; Lunsford V. Kosanke (1956) 140 Cal.App.2d 623, 631-632 [295 P.2d 432].)
In the Colberg action plaintiffs are Colberg, Inc., a California corporation, Wilton Colberg, Jack Colberg and Gordon Colberg, co-partners, doing business as Colberg Boat Works. Colberg, Inc. operates the shipyard under a lease from the partnership and owns the equipment and personal property utilized in such operation. Hereafter, unless otherwise indicated, we refer to all of the said plaintiffs collectively as Colberg.
Colberg alleges that its property 'will be totally lost and destroyed” ; and that it is “the only shipyard facility which lies on the Upper Stockton Channel that relies principally upon the repair and construction of large vessels for its income.” Stephens alleges that as a result of the construction of the bridges, its shipyard “can only be operated at substantial loss to the plaintiff and the value of plaintiff’s property will be substantially diminished. ’ ’
Colberg alleges on information and belief that the state “has determined the comparative costs of the bridges at different levels, includ*414ing structure, roadway, and right of way acquisitions to be as follows:
“50 foot vertical clearance above mean soa level: $27,448,000.00
“63 foot vertical clearance above mean sea level: $38,724,000.00
“100 foot vertical clearance above mean sea level: $46,398,000.00
“No estimate of cost has been made by the defendant for a bridge 135 feet above mean sea level”; further alleges that “the determination of the defendant to construct said bridges with a vertical clearance of 50 feet above mean sea level, and to construct them without facilities for a lift type or draw-bridge type bridge, has been made solely upon considerations of economy and the advantages to motor vehicle traffic safety and utility, and not upon any consideration to improve navigation. Plaintiffs further allege that said bridges are an obstruction to navigation and do not improve navigation in any manner whatsoever. ’ ’
“ The demands of commerce and of modern life generally impose a necessity for security in legal relations. That implies not only that the immediate present be stabilized, but that planning for the future may be possible. Such planning requires the opportunity to ascertain and to determine the effect of relations and events certain or practically certain to arise in the future.” (Borchard, Declaratory Judgments (2d ed. 1941) pp. 414-415 ; see Sattinger v. Newbauer (1954) 123 Cal.App.2d 365, 367 [266 P.2d 586] ; Staley v. Board of Medical Examiners (1952) 109 Cal.App.2d 1, 5-6 [240 P.2d 61] ; Knox v. Wolfe (1946) 73 Cal.App.2d 494, 505 [167 P.2d 3] ; University of Redlands v. Ford (1942) 56 Cal.App.2d 151, 153 [132 P.2d 238].)
‘Private property shall not be taken or damaged for public use without just compensation having first been made to . . . the owner, . . .” (Cal. Const., art. I, § 14.)
Indeed, plaintiffs, while scrupulously eschewing all claims based on a public right, have been, forced into the position of exlending a private right in a meandering continuum from their properties to the Pacific Ocean and, as counsel for the state observed at oral argument, now claim a property right in “a column of air 135 feet high extending from their properties to the sea.” We cannot refrain from observing that were the bridge here involved proposed for the Carquinez Straits instead of the Upper Stockton Channel, plaintiffs, consistently with the theory of their pleadings, would advance the same basic claim for compensation. If such claim could be considered valid for plaintiffs, it would also bo assertible by the countless riparian owners in the intervening section of the watercourse.
”. . . nor shall private property be taken for public use, without just compensation.” (U.S. Const., Amend. V.)
There is some doubt as to the origin and basis of the dominant navigational servitude in favor of the federal government. Perhaps the most satisfactory explanation is that derived from the common law concept of jus publicum, that interest of the Crown in its navigable waterways whereby the subjects were assured that such waterways would be utilized for public benefit, and that private interference with such utilization would be prevented. (See Morreale, op cit., at pp. 19-31.)
We observe that New York cases antedating the Marine Air Ways case did not appear to construe the servitude so narrowly as did that case and those following it. (See Sage v. Mayor of City of New York (1897) 154 N.Y. 61, 76 [47 N.E. 1096, 61 Am.St.Rep. 592, 38 L.R.A. 606] ; Tiffany v. Town of Oyster Bay (1922) 234 N.Y. 15, 21 [136 N.E. 224, 24 A.L.R. 1267] ; Matter of City of New York (Jamaica Bay) (1931) 256 N.Y. 382, 389 [176 N.E. 539].)
No case has been found denying compensation when the act of the state upon its navigable waters results in actual taking of or encroachment upon fast lands. (See Natcher v. City of Bowling Green, supra, 264 Ky. 584 ; Morrison v. Clackamas County (1933) 141 Ore. 564 [18 P.2d 814] ; Conger v. Pierce County, supra, 116 Wash. 27.)
"[E]ach State has dealt with the lands under the [navigable waters] within its borders according to its own views of justice and policy, reserving its own control over such lands, or granting rights therein to individuals or corporations, whether owners of the adjoining upland or not, as it considered for the best interests of the public. Great caution, therefore, is necessary in applying precedents in one State to cases arising in another.” (Italics added.) (Shively v. Bowlby, supra, 152 U.S. 1, 26 [38 L.Ed. 331, 341].)
It should he noted that the “private property’’ right upon which plaintiffs base their claims is of even larger scope than a simple right to navigate freely to the sea, for that right is not here curtailed except insofar as it concerns ships with fixed structures more than 45 feet above the waterline. Thus, the “right of access’’ claimed by plaintiffs would seem to include a right to navigate to the sea in vessels of any size. (See fn. 8, infra.)
As noted above (see fn. 11 and accompanying text) the State of New York appears to limit the scope of the state’s servitude to those cases where the state’s act is in furtherance of navigation, and requires compensation for damage to private rights occasioned by acts not in furtherance of navigation. However, in a case whose facts are similar to those at bench, the New York court construed those facts and characterized the right at issue as that of navigation, rather than access. Since, as we have indicated above, the right to navigate is a public rather than a private right, the court held that its abridgment was noneompensable even though the governmental act complained of was not undertaken in aid of navigation. (Marine Air Ways v. State of New York, supra, 201 Misc. 349 ; cf. Crance v. State of New York, supra, 205 Misc. 590.) Other jurisdictions have adopted a similar approach. (State ex. rel. Andersons v. Masheter, supra, 1 Ohio St.2d 11 ; see also Frost v. Washington County R.R. Co., supra, 96 Me. 76 ; Carmazi v. Board, of County Comrs. (Fla.App. 1959) 108 So.2d 318 ; Moore v. State Road Dept. (Fla.App. 1965) 171 So.2d 25.) We do not adopt this rationale in the instant case. The rationale we do adopt leaves open the question whether, as against private persons, a riparian owner’s right of access connotes a right of some scope to move freely upon the surface of navigable water once the channel has been attained.
It is this right as against private persons which is the basis of cases involving condemnation of land fronting on navigable waterways. (See City of Los Angeles v. Aitken (1935) 10 Cal.App.2d 460 [52 P.2d 585] ; cf. United States v. Chandler-Dunbar etc. Co. (1913) 229 U.S. 53 [57 L.Ed. 1063, 33 S.Ct. 067]; United States v. River Rouge Improv. Co., supra, 269 U.S. 411.) The right of access, though defeasible by appropriate governmental action, has value to the owner of riparian or littoral property, and this right must be valued in light of a realistic estimate of the chance that the government would exercise its power to diminish or curtail it.
The improvement involved in Miramar was in aid of navigation. However, as we have explained supra, the state’s power to regulate and control its navigable waters is not limited to purposes of navigation, and the servitude in its favor is of commensurate scope.