On the eve of America's entry into World War II, in 1941, the U.S. Senate authorized the Architect of the Capitol to prepare plans for a second Senate Office Building. The federal government's expanded role nationally and internationally beginning in the 1930s raised new issues for senatorial action, which in turn required increased staff assistance and created crowded conditions in the Capitol and the original Senate Office Building. When World War II delayed implementation of the Senate's building plans, the space problems grew increasingly urgent. Soon after the war, the United States Congress passed the Legislative Reorganization Act of 1946, in order to modernize and streamline its operations and provide senators and committees with professional staff assistance. To house the additional staff, the Senate resorted to renting space in nearby buildings. Moreover, with the anticipated admission of Alaska and Hawaii as states, four new senators would also require office space. As pressure for more space mounted, the Senate in 1948 acquired property on which to erect a second office building in order to accommodate the enlarged staff. The consulting architects, Otto R. Eggers and Daniel Paul Higgins firm Eggers & Higgins of New York City, drew the plans for a seven-story building faced in white marble, to be located across First Street from the Old Senate Office Building and diagonally across the Capitol grounds from the Senate wing of the Capitol. Although more streamlined and less ornate, the new building was designed to harmonize with the Capitol and the first Senate Office Building. Bronze spandrels between the third- and fourth-floor windows depicted scenes from American industry: Shipping, Farming, Manufacturing, Mining and Lumbering. Below the new building's west pediment is the inscription: “The Senate is the Living Symbol of Our Union of States.” Although the Senate approved the plans for the new building in 1949, construction was delayed until 1956. By then, increased costs of construction caused some scaling back of the original design, including the elimination of a planned central corridor. With Architect of the Capitol J. George Stewart looking on, members of the Senate Office Building Commission laid the cornerstone on July 13, 1956, and the new office building opened on October 15, 1958. The Dirksen Building was designed to accommodate the television era, complete with committee hearing rooms equipped with rostrums that were better suited to listening to testimony than sitting around conference tables, as had been done in previous committee rooms, both in the U.S. Capitol and the Russell Senate Office Building. In the 1970s, a third Senate office building, the Hart Senate Office Building was built next to the Dirksen Building on a spot originally intended for a mirror image of the Dirksen Senate Office Building. The Hart and Dirksen Buildings are connected, and one can walk between the two almost as easily as if they were one structure.
Renovation
The building was renovated during 1999–2000 under the auspices of the Architect of the Capitol, who at the time was Alan M. Hantman, FAIA. Day-to-day supervision of the project carried out by Assistant Architect Michael G. Turnbull, FAIA. The renovation was well received by Senators and their staff. Senator Robert F. Bennett of Utah, Chairman of the Senate Legislative Branch Subcommittee, made the following comments regarding the renovation:
List of current U.S. Senators in the Dirksen Senate Office Building
Committees inside Dirksen Senate Office Building
United States Senate Committee on Banking, Housing and Urban Affairs
