41 C.F.R. § 102-71.20 – Installing, repairing, and replacing sidewalks.

(a) In accordance with 40 U.S.C. 589, Federal agencies must comply with the real property policies governing the installation, repair and replacement of sidewalks around buildings, installations, properties, or grounds under the control of executive agencies and owned by the United States. The Federal Government must fund the cost of installing, repairing, and replacing sidewalks. Funds appropriated to the agency for installation, repair, and maintenance, generally, must be available for expenditure to accomplish the purposes of this subpart. Upon approval from GSA, Federal agencies may—
1. (1) Authorize the appropriate State or local government to install, repair and replace sidewalks, or arrange for this work, and reimburse them for this work; or
2. (2) Contract or otherwise arrange and pay directly for installing, repairing and/or replacing sidewalks.
(b) Federal agencies, giving due consideration to State and local standards and specifications for sidewalks, decide when to install, repair or replace a sidewalk. However, Federal agencies may prescribe other standards and specifications for sidewalks whenever necessary to achieve architectural harmony and maintain facility security.