Pennsylvania Avenue lighthearted celebrations, including a series of day- and nighttime Shriner's parades in the 1920s and 1930s. Thomas and Concepcion Picciotto are the founders of the White House Peace Vigil, the longest running anti-nuclear peace vigil in the US, at Lafayette Square on the 1600 block of Pennsylvania Avenue. After the Oklahoma City bombing in 1995, the Secret Service closed the portion of Pennsylvania Avenue in front of the White House to all vehicular traffic. Pedestrian and bicycle traffic, however, was still permitted on the sidewalk. After 9/11 this policy was made permanent. Near the White House traffic is redirected to
Pennsylvania Avenue Bridge (1890) River parallel to the Pennsylvania Avenue Bridge. Congress required is streetcars to run from Barney Circle across the bridge to Pennsylvania Avenue SE, down Pennsylvania Avenue SE to the District border with Maryland. A branch line would travel south from Pennsylvania Avenue SE along Branch Avenue, and then southwest at Bowen Road (now Alabama Avenue SE) to the intersection with Harrison Street (now Good Hope Road SE), where a neighborhood called "Good Hope" was growing. Another branch line left Pennsylvania Avenue SE at Minnesota Avenue SE, and traveled along Minnesota Avenue to Harrison Street. A third branch line left Pennsylvania