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.
Coronado is a home to some upscale and designer boutiques and the fabulous Hotel Del Coronado. Built in 1888, the Hotel Del (as she is known by locals) is now a historic landmark. Taking the ferry to Coronado and then having lunch at the Hotel Del is a wonderful way to spend a day in San Diego.