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| ArchivedBridgeHunter Aerial view of bridge Photo taken from commercial jetliner. Looking north, Coronado Island is at lower left; Downtown San Diego is at upper left. Photo taken by Roger Deschner in June 2015 License: Creative Commons Attribution-Share-Alike (CC BY-SA) |
Description: Huge bridge spanning San Diego Bay, linking Coronado to San Diego. Five lanes wide, with a moveable center barrier to provide for 3 lanes in the heavier direction of travel at different times of the day. Clearance under bridge required to be 200 feet [61m] by the U. S. Navy.Built as a toll bridge, but became free in 2002. Toll booths remain, in case tolls are ever reinstated.History: Opened August 3, 1969; seismic retrofit 1999; tolls removed 2002.Design: Orthotropic deck on box girder[ArchivedBridgeHunter]
The 3.4km (2.1 mile) long bridge has spans up to 660' (201m).
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| Boat View, Nov 2017 |
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| Street View, Aug 2015 |
The San Diego-Coronado Bridge is notable among the world's great bridges for the number and size of its concrete towers. There are 30 towers that at their highest point over the bay channel reach a height of 200 feet. They were designed with a curved cap to simulate the Spanish-style mission arches associated with the historical architecture of San Diego. The towers rest on 487 pre-stressed reinforced concrete piles, which measure 54 inches in diameter, with walls 5 inches thick. The piles were driven and jetted 100 feet down into the sand and clay bottom of the bay. The mud was then removed from the inside of the piles and they were filled with concrete. Clusters of up to 44 piles were used under some of the towers....The shipping channels of the bay are spanned by a 1,880-foot, three-span box girder – the largest of its kind in the world. The bridge roadway is an orthotropic steel-plate design and serves as the top flange of the box girder. Its spans are the third longest of their kind in the nation. This design saves steel and provides a slender superstructure with a smooth exterior, with all braces and stiffeners being inside the box girder.The steel superstructure was built and partially erected in the San Francisco Bay Area. The girders were barged down the coast and lifted into place by a large crane. The precast, prestressed concrete girders measure up to 165-feet-long. They were built in Long Beach and are among the longest of their kind in the U.S.[Caltrans_facts via ArchivedBridgeHunter]
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The Wayback Machine saved at least the index of construction photos. It is a shame that DOTs don't continue to support the URLs that they publish. Disk drives are cheap.
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| Caltrans via archive |
Actually, some of the photo links do work.
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| Photo |
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