Mackinac Bridge
Coverage of Mackinac Bridge in the Nexus archive.
- Wildfire smoke creates health concerns across Michigan, resulting in closures and cancellations
Wildfire smoke from Canada has led to hazardous air quality in Michigan, prompting closures of government offices, courts, and events like the Rx Kids Baby Parade. The Upper Peninsula faces 'Hazardous' conditions, while the Lower Peninsula experiences 'Very Unhealthy' air quality, with officials advising residents to limit outdoor activities.
- Mackinac Bridge not at risk of collision collapse, report confirms
A report confirms the Mackinac Bridge is below the national risk threshold for collapse after a vessel collision, following a vulnerability assessment prompted by the 2024 Francis Scott Key Bridge collapse in Baltimore. The Mackinac Bridge Authority stated the risk of collapse from a ship strike is 'extremely low,' and the National Transportation Safety Board recommended assessments for 68 bridges after the Key Bridge incident.
- Mackinac Bridge falls below threshold of collapse risk from vessel collision, report finds
The Mackinac Bridge is at a lower risk of collapse from vessel collisions than the national threshold, according to a report by the Mackinac Bridge Authority and consultant Parsons. The study, conducted in response to the National Transportation Safety Board's request following the 2024 Baltimore bridge collapse, found the bridge's annual collapse probability is 0.000097, below AASHTO's limit for critical bridges.
- Mackinac Bridge clears national safety check prompted by bridge collapse in Baltimore
The Mackinac Bridge was found to have a lower risk of collapse from ship collisions than national safety thresholds, according to a report by engineering firm Parsons. The study calculated a 10,350-year return period for potential collapse, below the .0001 limit for critical bridges, contrasting sharply with the 2024 Francis Scott Key Bridge collapse in Baltimore.