Test air leakage rate: With a fully-charged air system (typically 125 psi), turn off the engine, release the service brake, and time the air pressure drop. The loss rate should be less than 2 psi in 1 minute for single vehicles and less than 3 psi in 1 minute for combination vehicles.
Construction on the Coronado Bridge began in 1967. Almost 500 prestressed concrete piles were fastened to the sea floor of the bay to provide the foundations for the bridge. The steel and concrete components were largely built offsite, then assembled together from marine construction barges over the bay.
Financed by toll revenue bonds, the bridgeâtunnel was opened on April 15, 1964. It was officially named the Lucius J. Kellam Jr. BridgeâTunnel in August 1987 after one of the civic leaders who had long worked for its development and operation. However, it continues to be best known as the Chesapeake Bay BridgeâTunnel. From 1995 to 1999, at a cost of almost $200 million, the capacity of the above-water portion was increased to four lanes.