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Bolles Harbor Boat Ramp

La Plaisance Creek · South Monroe, Monroe County

Bolles Harbor is a 15-lane trailer boat ramp on La Plaisance Creek in South Monroe, Michigan, with a fee or pass required, 284 trailer parking spaces and restrooms. It is managed by Sterling State Park.

Launch
Trailer launch
Lanes
15
Fees
Annual pass: $15 (Michigan Recreation Passport, Michigan vehicles, bought with plate renewal. Out-of-state vehicles $42 a year or $12 a day)
Trailer parking
284 spaces
Car parking
5 spaces
Restroom
Yes
Dock
Yes
Hours
Open 24 hours

Managed by Sterling State Park

Directions

Today

Near this ramp

Places © OpenStreetMap contributors. Call ahead for hours.

Before you launch in Michigan

Michigan boating laws: education, age limits and life jackets

Links go to official Michigan agency pages.

All ramps in Monroe County

New to launching? Read how to launch a boat and ramp etiquette.

Nearby boat ramps

Page updated Oct 27, 2026. Ramp details from the Michigan Department of Natural Resources.