# 2026-12557: Coast Guard Draws 100-Yard Bubble Around Swimmers

2026-12557, Safety Zone; Straits of Mackinac, Mackinaw City, MI, is a Federal Register rule from Homeland Security Department, Coast Guard published 2026-06-23, effective 2026-07-18; PRIA reads it as touching household money (as of 2026-06-30).

- Canonical: https://policyrisk.com/federal-register/2026-12557
- As of: 2026-06-30
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-12557
- Title: Safety Zone; Straits of Mackinac, Mackinaw City, MI
- Type: Rule
- Agencies: Homeland Security Department; Coast Guard
- Citation: 91 FR 37316
- Published: 2026-06-23
- Effective: 2026-07-18
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 1625-AA00
- Last updated: 2026-06-30

## In one line

Coast Guard Draws 100-Yard Bubble Around Swimmers

## Summary

On July 18, 2026, from 7 a.m. to noon, the Coast Guard is setting up a safety zone around the Mackinac Bridge to keep boats and people clear during a big swim event with about 400 swimmers. If you’re boating nearby, you’ll need special permission to enter this 100-yard zone. This temporary rule helps keep everyone safe without costing you a dime!

## Abstract

The Coast Guard is establishing a temporary safety zone for certain navigable waters within a 100-yard radius of the center span of the Mackinac Bridge. The safety zone is needed to protect personnel, vessels, and the marine environment from a marine event involving swimmers under the bridge. This rulemaking prohibits entry of vessels or persons into this safety zone during the swim conducted on July 18, 2026 from 7 a.m. to noon unless specifically authorized by the Captain of the Port, Sector Northern Great Lakes or their designated representative.

## Effects PRIA read

- Mackinac Bridge 100‑yard safety zone: cost, low. On July 18, 2026, from 7 a.m. to noon, all boats and people are prohibited from entering the safety zone that covers navigable waters within 100 yards of the center span of the Mackinac Bridge between Mackinaw City and St. Ignace, MI, unless you get permission from the Captain of the Port (COTP). T…
- Minimal small‑business impact; permission available: benefit, low. The Coast Guard certified under the Regulatory Flexibility Act that this temporary safety zone will not have a significant economic impact on a substantial number of small entities. Vessel traffic may safely transit around the small zone, the Coast Guard will issue a Broadcast Notice to Mariners on…

## Related documents

- [2026-20087](https://policyrisk.com/federal-register/2026-20087): Clarification of Certain Mariner Training Requirements, 2026-10-01
- [2026-13137](https://policyrisk.com/federal-register/2026-13137): Marine Casualty Reporting on the Outer Continental Shelf, 2026-06-30
- [2026-08699](https://policyrisk.com/federal-register/2026-08699): Shipping Safety Fairways Along the Atlantic Coast, 2026-05-05
- [2026-20632](https://policyrisk.com/federal-register/2026-20632): Special Local Regulations; San Francisco Bay Navy Fleet Week Parade of Ships and Blue Angels Demonstration, San Francisco, CA, 2026-10-08
- [2026-20527](https://policyrisk.com/federal-register/2026-20527): Area Maritime Security Advisory Committee (AMSC), Eastern Great Lakes, Western New York; Sub-Committee Vacancy, 2026-10-07
- [2026-20522](https://policyrisk.com/federal-register/2026-20522): Safety Zone; Luminsea Miami Shootout and Races, Miami Marine Stadium Harbor, Miami FL, 2026-10-07

## Sources
- [2026-12557 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/23/2026-12557/safety-zone-straits-of-mackinac-mackinaw-city-mi)
- [2026-12557 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-23/pdf/2026-12557.pdf)

## Related
- [Previous: 2026-12547, Tanker Security Program](https://policyrisk.com/federal-register/2026-12547)
- [Next: 2026-12558, Safety Zone; Detroit River, Trenton, MI](https://policyrisk.com/federal-register/2026-12558)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-12557 (as of 2026-06-30).