In 1922, Congress authorized the Arlington Memorial Bridge Commission (AMBC) to hold a design competition for the proposed Arlington Memorial Bridge. It awarded the design commission to the firm if McKim, Mead and White, which appointed architect William Mitchell Kendall to be the lead designer. Congress subsequently authorized construction of Kendall's bridge on February 24, 1925. The legislation authorizing construction of the bridge also provided for the construction of approaches (on-ramps, off-ramps, and pedestrian areas) on both the D.C. and Virginia ends of the bridge; for the improvement of B Street NW as a new ceremonial avenue to link to the bridge; and for the construction of a roadway (eventually called Memorial Drive) between the bridge and the main gate of Arlington National Cemetery as well as a new ceremonial entrance at this gate (subsequently known as the Hemicycle).