Arlington Memorial Bridge on February 24, 1925. The 1925 legislation specified that B Street NW be treated as a major approach to Arlington Memorial Bridge. Several design problems presented themselves. The first was how to turn B Street NW into a ceremonial gateway. The second was how to link B Street NW with the bridge. This second problem was particularly important, because the Lincoln Memorial stood at the northeastern terminus of the proposed bridge. Third, the Rock Creek and Potomac Parkway was being designed to terminate at the Lincoln Memorial as well. The parkway would also interact with the B Street approaches to the bridge. Additionally, three agencies had design approval over the bridge. The first was the AMBC, which was building it. The second was the National Capital Parks Commission (NCPC), which had statutory authority to approve federal transportation construction in the city. The third was the United States Commission of Fine Arts (CFA), which had to approve any memorial design. Since the bridge was considered a memorial, it also had to pass CFA muster as well. Connecting, extending, and widening B Street NW In April 1924, the Arlington Memorial Bridge Commission proposed extending B Street all the way to the U.S. Capitol as part of the plan to turn the street into a major thoroughfare. The NCPC inspected B Street in June 1926, and in August made a preliminary determination that the street should be widened to between the Potomac River and Virginia Avenue NW. This would be accomplished by moving the south curb south by and the north curb north by . But once the street went past Virginia Avenue NW, the NCPC determined that the north curb should not be moved. In September 1926, the NCPC approved widening B Street to between 6th and 15th Streets NW (by moving the south curb south). This decision was reaffirmed by a joint meeting of the NCPC and the Office of the Supervising Architect of the U.S. Treasury (which was overseeing construction of the Federal Triangle office complex on the north side of B Street between 6th and 15th Streets NW). The NCPC agreed in February 1927 that B Street should extend to Pennsylvania Avenue NW, and was studying whether to extend it through the proposed Senate Park. Architect William Mitchell Kendall proposed creating a traffic circle around the Lincoln Memorial to accommodate the bridge, B Street approach, parkway