delivered the opinion of the Court:
It will be helpful' in the determination of the issues here' raised to review briefly the legislation under which this viaduct was constructed. The act of February 12, 1901, 31 Stat. at L. 774, chap..354, for eliminating grade crossings for railroads in the District, and to authorize the construction of new terminals, etc., required all work of construction to be done “to-the satisfaction and subject to the approval of the commissioners of the District of Columbia,” who were “authorized to exercise such supervision over the same” as might be necessary “to' secure the proper construction and maintenance thereof.” Sec 7. An appropriation was made toward the cost of the construction of elevated terminals, viaduct, and structures within . the city of Washington, such appropriations to be paid “upon presentation of a certificate by the commissioners of the District of Columbia that the said viaduct has been completed as required by this act.” Sec. 8. The supplemental act of February 28, 1903, 32 Stat. at L. 909, chap. 856, required that the viaduct should be so constructed as to permit H, K, L, and M streets and Florida avenue to be passed and continued under the same through arched openings or spaces, and that “the said terminal company shall also grade and pave the said passageways at the time of their construction to the satisfaction of the commissioners of the District of Columbia, but thereafter the *573maintenance of the pavements and roadways shall be provided for as in the case of other public highways in the District of Columbia.” Sec. 3. “Before any portion of the work of construction” described in the act should be begun, plans thereof in accordance with the provisions of the act were required to be prepared by the company undertaking such work, and “submitted for approval to the commissioners of the District of Columbia;” and duly authenticated copies of said plans, after approval, were to be filed with the commissioners of the District of Columbia, and all work done in accordance therewith.
The plans for the construction of this viaduct are dated April 12, 1904. On June 21, following, the District commissioners, these plans having been submitted to them for approval, wrote the chief engineer in charge of the execution of said work, as follows: “The commissioners of the District of Columbia have the honor to return herewith the plans of the railroad subways on H and K streets, Northeast, in the city of Washington, in the District of Columbia, which they have approved under date of the 17th instant. Their approval of these plans is subject to the reservation of the right to require the building of detached walls in front of the abutments, if they deem it necessary. Before any money shall be paid under the act of Congress in relation to the terminal structure, your company shall, if required by the commissioners, deposit with the commissioners an amount sufficient to cover the cost of constructing these walls.” On July 17, 1905, the assistant engineer of the District, in a written communication to the District engineer of highways, directed attention “to the condition of seepage and dampness prevailing in the masonry of the bridges of the Washington Terminal at Ií, K, L, and M streets, and Florida avenue, N. E., which seems to show failure in the water proofing of the back of walls.” On July 19th Assistant District Commissioner Harding directed the attention of the terminal company to this alleged defect. The receipt of this letter was acknowledged by the terminal company on July 20th. In the letter the terminal company said: “We are about ready to start on this work and will then provide for the completion of gutters and opening up of down *574spouts, which it is believed will prevent any further trouble.” On April 8, 1907, the assistant District engineer, in a written, communication to the District engineer of highways, again directed attention “to the apparent necessity of washing the roadway pavement under the Ii street terminal bridge at least once-a week, to remove accretions that ordinarily cause slipperiness;” that “the gummy substance under the bridge is sufficiently pernicious, at this time, to be unsafe for the foothold of horses.” The communication closes with the suggestion “that the timéis now opportune to permanently arrange for this cleaning process, which was anticipated as a condition to be met, when the design of this bridge was approved.” On November 29,. 1907, the assistant engineer of highways, in another eommuni-cation, said: ■ “Ample and reasonable time has been given to ascertain the necessity for action on this matter, and it is reasonably certain that corrective measures are imperatively and immediately necessary.” On December 2d, following, the District authorities again took up the question with the engineer of the construction company, and on January 27, 1908, the president of the board of commissioners, in a letter to the chief engineer of the construction company, again directed attention “to the fact that, as they (the commissioners) anticipated in June, 1904, the construction of the subways under your tracks on H street and K street are not satisfactory, and that the condition is particularly bad in the IT street subway. * * * The engineer commissioner suggested at that time (1904) that a thin inner and detached wall, at least for a portion of the height,, should be built, to protect pedestrians through the subway against the bad conditions due partly to seepage and partly to condensation,” etc. Further correspondence ensued, resulting in a communication from the commissioners to the construction company, under date of April 27, 1908, that no further action would be taken by the commissioners “pending the installation of such back-drainage system of the walls of these subways,, provided that no unreasonable length of time is consumed in-doing the work.” Nothing was done towards correcting existing conditions, however, prior to the injury of the plaintiff in the latter part of November, 1909.
*575The sole ground of liability asserted against the District was its failure to use reasonable diligence to remove accretions from this sidewalk. It was conceded by counsel for the defendant that the District assumed control over the sidewalk and street in accordance with the provisions of law. It was further-conceded that the condition of the sidewalk was known to the District officials, and hence to the District. At the request of the defendant, the following, among other, instruction, was given the jury: “The court instructs the-jury that evidence of constructive notice has been admitted as-material only on the question whether the District of Columbia had notice of an unsafe condition of said sidewalk, and the-question still remains whether, having had such notice, the District was or was not guilty of negligence in its treatment of the conditions at said place under all of the circumstances. If the District was not guilty of negligence, then it is not liable to the plaintiff. The District is charged with the duty of supervising the streets of this District, and keeping them in a condition fit for convenient use and safe against accident to-travelers, but it is simply bound to practise due care and diligence in the exercise of its powers and in the application of its-resources, means, and opportunities towards the objects named. If due care under the circumstances disclosed in the evidence in this case has been exercised by the District in an endeavor to make the sidewalk under said viaduct safe for travelers, then the plaintiff’s accident is a misfortune for which the District is not responsible, and your verdict should be for the defendant.”
The elimination of grade crossings and the construction of a union railroad station in the District constituted an undertaking of great magnitude and far-reaching importance to the people of this city. In the legislation effecting- the execution of this great undertaking, large powers were conferred upon the commissioners of the District. Before work on the viaduct in question could be begun at all, the commissioners were required to be satisfied with the plans of the terminal company and, before payment of any of the $1,500,000 appropriated to the terminal company could be paid, a certificate by such commissioners of the completion of said viaduct as required by the *576act was necessary. In 1904, therefore, the commissioners, by their qualified approval of the plans of the terminal company, made possible -the erection of this viaduct. Upon the completion thereof, it became and was the duty of the District to maintain the pavements and roadways thereunder, “as in the case of other public highways in the District of Columbia.” Act of February 28, 1903, sec. 3 (32 Stat. at L. 911, chap. 856). And there was ample evidence before the jury tending to show that the District did not, to quote from the prayer submitted by the defendant, “in its treatment of the conditions at said place under all the circumstances, * * * practise due care and diligence in the exercise of its powers and in the application of its resources, * * * in an endeavor to make the sidewalk under said viaduct safe for travelers,” as it was in duty bound to do. District of Columbia v. Woodbury, 136 U. S. 450, 34 L. ed. 472, 10 Sup. Ct. Rep. 990; O’Dwyer v. Northern Market Co. 24 App. D. C. 81; Domer v. District of Columbia, 21 App. D. C. 284; Dotey v. District of Columbia, 25 App. D. C. 232. According to the undisputed facts the dangerous condition of the sidewalk under this viaduct was known to the District from the "beginning. It was its duty, therefore, to practise reasonable care in the exercise of its powers and in the application of its •resources, to render this sidewalk reasonably safe for public "travel. The objectionable condition which caused the accident was not the result of a sudden storm or other unforeseen con-tingency. It grew out of a construction which the commissioners questioned, but nevertheless permitted and suffered to remain for several years. We think there was ample evidence to support the finding against the District.
Whether the terminal company is equally responsible, we need mot determine, since the question is not before us.
Judgment affirmed, with costs. Affirmed.
A petition for the allowance of a writ of error from the Su-preme Court of the United States was denied by the court of appeals October 8, 1913.