Authorizes the States of Illinois and Missouri to contract jointly or individually with the city of Chester, Illinois, on or before June 1, 1974 to assume responsibility for the operation, maintenance, and repair of the Chester Bridge.

Provides that when either or both States enter into such an agreement, all tolls thereafter charged for transit over such bridge shall, except as provided by this Act, be: (1) used to retire outstanding indebtedness on the bridge and the approaches thereto; and (2) credited into a sinking fund established for such bridge.