Vertical Clearances of Bridges, Upper Mississippi and Sacramento Rivers [electronic resource] : hearings before the United States Senate Committee on Public Works, Subcommittee on Flood Control -- Rivers and Harbors, Eighty-Seventh Congress, first session, on Aug. 22, 23, 1961.

Considers H.R. 5963, to amend the General Bridge Act to increase vertical clearance of bridges crossing Mississippi and Sacramento Rivers.