HB4470

Highways: bridges; Mackinac Bridge; designate as a key facility. Amends sec. 552c of 1931 PA 328 (MCL 750.552c).

Chamber Passed·12/9/25

Designates the Mackinac Bridge as a key facility under Michigan law.

The bill amends Michigan's key facility law to include the Mackinac Bridge as a key facility. Key facilities are defined as those completely enclosed by a physical barrier and posted with required signage. Unauthorized entry into these facilities is prohibited and punishable by law. The Mackinac Bridge, when enclosed and posted, will now fall under this protection, ensuring its security and safety.

Included in complete analysis

  • Overview
  • Core Provisions
  • Implementation
  • Impact
  • Legal Framework
  • Critical Issues

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Where it stands

Last
Passed the House · 92–8 · Dec 9, 2025
Current
Transportation And Infrastructure Committee
Next
Senate floor vote

Sponsors

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4
13
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Democratic CaucusRepublican Caucus

Roll Call Votes

92 Yea

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8 Nay

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Calendar

Oct 28, 2025

12:00 PM

House Transportation and Infrastructure

History

Dec 10, 2025

Senate

Passed By House With Immediate Effect

Dec 10, 2025

Senate

Referred To Committee On Transportation And Infrastructure

Dec 9, 2025

House

Read A Second Time