DEPARTMENT OF HOMELAND SECURITY
<SUBAGY>Coast Guard</SUBAGY>
<CFR>33 CFR Part 165</CFR>
<DEPDOC>[Docket Number USCG-2025-0259]</DEPDOC>
<RIN>RIN 1625-AA00</RIN>
<SUBJECT>Safety Zone; Straits of Mackinac, Mackinaw City, MI</SUBJECT>
<HD SOURCE="HED">AGENCY:</HD>
Coast Guard, DHS.
<HD SOURCE="HED">ACTION:</HD>
Notice of proposed rulemaking.
<SUM>
<HD SOURCE="HED">SUMMARY:</HD>
The Coast Guard is proposing to establish a temporary safety zone for navigable waters within a 100-yard radius of the center span of the Mackinac Bridge, Straits of Mackinac, Mackinaw City, MI. The safety zone is needed to protect personnel, vessels, and the marine environment from a marine event involving swimmers under the bridge. This proposed rulemaking would prohibit persons and vessels from being in the safety zone unless authorized by the Captain of the Port Sector Northern Great Lakes or a designated representative. We invite your comments on this proposed rulemaking.
</SUM>
<EFFDATE>
<HD SOURCE="HED">DATES:</HD>
Comments and related material must be received by the Coast Guard on or before June 2, 2025.
</EFFDATE>
<HD SOURCE="HED">ADDRESSES:</HD>
You may submit comments identified by docket number USCG-2025-0259 using the Federal Decision-Making Portal at
<E T="03">https://www.regulations.gov.</E>
See the “Public Participation and Request for Comments” portion of the
<E T="02">SUPPLEMENTARY INFORMATION</E>
section for further instructions on submitting comments. This notice of proposed rulemaking with its plain-language, 100-word-or-less proposed rule summary will be available in this same docket.
<FURINF>
<HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD>
If you have questions about this proposed rulemaking, call or email LT Rebecca Simpson, Sector Northern Great Lakes Waterways Management Division, U.S. Coast Guard; 906-635-3223, email
<E T="03">Rebecca.a.simpson@uscg.mil.</E>
</FURINF>
<SUPLINF>
<HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD>
<HD SOURCE="HD1">I. Table of Abbreviations</HD>
<EXTRACT>
<FP SOURCE="FP-1">CFR Code of Federal Regulations</FP>
<FP SOURCE="FP-1">DHS Department of Homeland Security</FP>
<FP SOURCE="FP-1">FR Federal Register</FP>
<FP SOURCE="FP-1">NPRM Notice of proposed rulemaking</FP>
<FP SOURCE="FP-1">§ Section </FP>
<FP SOURCE="FP-1">U.S.C. United States Code</FP>
</EXTRACT>
<HD SOURCE="HD1">II. Background, Purpose, and Legal Basis</HD>
On September 17, 2024, an organization notified the Coast Guard that it will be conducting a swim within a 100-yard radius of the Mackinac Bridge from 7 a.m. to noon on July 26, 2025. Approximately 400 swimmers will swim from Mackinaw City to St. Ignace on the east side of the bridge. The Captain of the Port Sector Northern Great Lakes (COTP) has determined that potential hazards associated with the swim would be a safety concern for anyone within a 100-yard radius of the bridge.
The purpose of this rulemaking is to ensure the safety of vessels and the navigable waters within a 100-yard radius of the bridge before, during, and after the scheduled event. The Coast Guard is proposing this rulemaking under authority in 46 U.S.C. 70034.
<HD SOURCE="HD1">III. Discussion of Proposed Rule</HD>
This rule establishes a safety zone from 7 a.m. until noon on July 26, 2025. The safety zone will cover all navigable waters within 100 yards of the Mackinac Bridge while swimmers are beneath it. The duration of the zone is intended to protect personnel and vessels in these navigable waters while swimmers are in the water. No vessel or person will be permitted to enter the safety zone without obtaining permission from the COTP or a designated representative. The regulatory text we are proposing appears at the end of this document.
<HD SOURCE="HD1">IV. Regulatory Analyses</HD>
We developed this proposed rule after considering numerous statutes and Executive orders related to rulemaking. Below we summarize our analyses based on a number of these statutes and Executive orders.
<HD SOURCE="HD2">A. Regulatory Planning and Review</HD>
Executive Orders 12866 and 13563 direct agencies to assess the costs and benefits of available regulatory alternatives and, if regulation is necessary, to select regulatory approaches that maximize net benefits. This NPRM has not been designated a “significant regulatory action” under section 3(f) of Executive Order 12866. Accordingly, the NPRM has not been reviewed by the Office of Management and Budget (OMB).
This regulatory action determination is based on the size, location, duration, and time-of-day for the safety zone. Vessel traffic will be able to safely transit around all safety zones which will impact small designated areas within the COTP zone for short durations of time. Moreover, the Coast Guard will issue Broadcast Notice to Mariners via VHF channel 16 about the zone and the rule allows vessels to seek permission to enter the zone.
<HD SOURCE="HD2">B. Impact on Small Entities</HD>
The Regulatory Flexibility Act of 1980, 5 U.S.C. 601-612, as amended, requires Federal agencies to consider the potential impact of regulations on small entities during rulemaking. The term “small entities” comprises small businesses, not-for-profit organizations that are independently owned and operated and are not dominant in their fields, and governmental jurisdictions with populations of less than 50,000. The Coast Guard certifies under 5 U.S.C. 605(b) that this proposed rule would not have a significant economic impact on a substantial number of small entities.
While some owners or operators of vessels intending to transit the safety zone may be small entities, for the reasons stated in section IV.A above, this proposed rule would not have a significant economic impact on any vessel owner or operator.
If you think that your business, organization, or governmental jurisdiction qualifies as a small entity and that this proposed rule would have a significant economic impact on it, please submit a comment (see
<E T="02">ADDRESSES</E>
) explaining why you think it qualifies and how and to what degree this rule would economically affect it.
Under section 213(a) of the Small Business Regulatory Enforcement Fairness Act of 1996 (Pub. L. 104-121), we want to assist small entities in understanding this proposed rule. If the proposed rule would affect your small business, organization, or governmental jurisdiction and you have questions concerning its provisions or options for compliance, please call or email the person listed in the
<E T="02">FOR FURTHER INFORMATION CONTACT</E>
section. The Coast Guard will not retaliate against small entities that question or complain about this proposed rule or any policy or action of the Coast Guard.
<HD SOURCE="HD2">C. Collection of Information</HD>
This proposed rule would not call for a new collection of information under the Paperwork Reduction Act of 1995 (44 U.S.C. 3501-3520).
<HD SOURCE="HD2">D. Federalism and Indian Tribal Governments</HD>
A rule has implications for federalism under Executive Order 13132 (Federalism), if it has a substantial direct effect on the States, on the relationship between the National Government and the States, or on the distribution of power and responsibilities among the various levels of government. We have analyzed this proposed rule under that Order and have determined that it is consistent with the fundamental federalism principles and preemption requirements described in Executive Order 13132.
Also, this proposed rule does not have Tribal implications under Executive Order 13175 (Consultation and Coordination with Indian Tribal Governments) because it would not have a substantial direct effect on one or more Indian Tribes, on the relationship between the Federal Government and Indian Tribes, or on the distribution of power and responsibilities between the Federal Government and Indian Tribes. If you believe this proposed rule has implications for federalism or Indian Tribes, please call or email the person listed in the
<E T="02">FOR FURTHER INFORMATION CONTACT</E>
section.
<HD SOURCE="HD2">E. Unfunded Mandates Reform Act</HD>
The Unfunded Mandates Reform Act of 1995 (2 U.S.C. 1531-1538) requires Federal agencies to assess the effects of their discretionary regulatory actions. In particular, the Act addresses actions that may result in the expenditure by a State, local, or tribal government, in the aggregate, or by the private sector of $100,000,000 (adjusted for inflation) or more in any one year. Though this proposed rule would not result in such an expenditure, we do discuss the potential effects of this proposed rule elsewhere in this preamble.
<HD SOURCE="HD2">F. Environment</HD>
We have analyzed this proposed rule under Department of Homeland Security Directive 023-01, Rev. 1, associated implementing instructions, and Environmental Planning COMDTINST 5090.1 (series), which guide the Coast Guard in complying with the National Environmental Policy Act of 1969 (42 U.S.C. 4321-4370f), and have made a preliminary determination that this action is one of a category of actions that do not individually or cumulatively have a significant effect on the human environment. This proposed rule involves a safety zone lasting 5 hours that would prohibit entry within 100 yards of the center span of the bridge. Normally such actions are categorically excluded from further review under paragraph L60(a) of Appendix A, Table 1 of DHS Instruction Manual 023-01-001-01, Rev. 1. A preliminary Record of Environmental Consideration supporting this determination is available in the docket. For instructions on locating the docket, see the
<E T="02">ADDRESSES</E>
section of this preamble. We seek any comments or information that may lead to the discovery of a significant environmental impact from this proposed rule.
<HD SOURCE="HD1">V. Public Participation and Request for Comment
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