A bill to declare the Port of Houston Authority Bridge over Greens Bayou, Texas, to be for all purposes "a lawful bridge", as defined in (An Act to provide for alteration of certain bridges over navigable water of the United States for apportionment of cost of such alteration between United States and owner of such bridge, and for other purposes) approved June 21, 1940.

Declares the Port of Houston Authority Bridge over Greens Bayou, Texas, to be for all purposes a "lawful bridge" as defined in a specified Act which provides for the alteration of certain bridges over navigable waters of the United States and for the apportionment of the cost of such alterations between the United States and the owners of such bridges.

Authorizes the Secretary of Transportation to reimburse the bridge owner for work done prior to the date of enactment of this Act which would have been the responsibility of the United States.