Mackinac Bridge is among 68 U.S. bridges NTSB recommends for risk-of-collapse evaluation
Michigan's Macinac Bridge is among 68 bridges nationwide the National Transportation Safety Board has recommended be ...
Manistee News Advocate on MSN14h
Mackinac Bridge among 68 identified for NTSB vulnerability assessment
The NTSB calls for vulnerability assessments of 68 U.S. bridges, including Michigan's Mackinac Bridge, to prevent collapse ...
WXYZ-TV Channel 714h
NTSB: Mackinac Bridge among 68 bridges that need to be assessed for risk of collapse if hit by ship
Sixty-eight bridges across the US should be assessed to see if they are at risk of collapse if hit by a ship, transportation ...
mlive15h
Mackinac Bridge among 68 that should be assessed for risk of collapse if hit by a ship
Michigan’s iconic Mighty Mac suspension bridge is among 68 in the United States that should be assessed for risk of collapse if stuck by a ship, national transportation officials said.