31 CFR § 413.1 - Closure of streets.
(a) District of Columbia. The following streets in the District of Columbia are closed to public vehicular traffic:
(1) The segment of Pennsylvania Avenue, Northwest, situated between Madison Place, Northwest, and Seventeenth Street, Northwest;
(2) The 1600 block of State Place, Northwest, situated between Seventeenth Street, Northwest, and the White House Complex; and
(3) The segment of South Executive Avenue that connects to the 1600 block of State Place, Northwest.
(b) Authorized access. The streets described in paragraph (a) shall remain open to public pedestrian use, official use of the United States, and authorized vehicular access for ingress and egress to the White House Complex and adjacent Federal Buildings.