Potts and Callahan Company Sites

The Massachusetts Avenue bridge was built in 1940-1941 by the Army Corps of Engineers with federal funds provided by Congress to the District of Columbia Commissioners.  It was a final step in the completion of the Rock Creek and Potomac Parkway in the New Deal era.  The new bridge replace a low earth-fill causeway over the creek, built in 1901, and a tunnel under the causeway that impeded traffic on the new Rock Creek parkway.  Congress appropriated $360,000 for the bridge under the District of Columbia act of 1939.  Additional funding was added in 1941 to dynamite the old bridge and...