In 1958, the northwestern bridge linking Columbia Island to Arlington Boulevard (the former Lee Boulevard) was widened to six lanes from four. The northern bridge carrying the George Washington Memorial Parkway over Boundary Channel was realigned in late 1962 as part of a larger road realignment allowing Arlington Boulevard to link to the new Theodore Roosevelt Bridge. A traffic light, the only one anywhere on the parkway, was installed to control traffic during the realignment process. The new bridge was finished and the light removed in September 1964.