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WHAT IS THE ELEVATION RISE OF THE BRIDGE ROADWAY?

April 26, 2017bridge ELEVATION Rise roadway

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WHAT IS THE ELEVATION RISE OF THE BRIDGE ROADWAY?

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At midspan, the height of the top of the roadway surface is +270.9 feet Mean Lower Low Water, which is the average of the lower low water height of each tidal day observed over the National Tidal Datum Epoch. At the south abutment of the Bridge, the height of the top of roadway surface is +186.5 feet. The difference, equalling the rise in elevation as you travel across the Bridge roadway, is +84.4 feet. These data are from the most recent survey done in 1992.