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Gulf Coast Area Roads at Risk from Sea-Level Rise

Gulf Coast Area Roads at Risk from Sea-Level Rise

Within 50 to 100 years, 2,400 miles of major roadway are projected to be inundated by sea-level rise in the Gulf Coast region. The map shows roadways at risk in the event of a sea-level rise of about 4 feet, within the range of projections for this region in this century under medium- and high-emissions scenarios.1 In total, 24 percent of interstate highway miles and 28 percent of secondary road miles in the Gulf Coast region are at elevations below 4 feet.2  Image Reference: CCSP SAP 4.72

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