US Bridges

M-115 over Muskegon River

Fair

Osceola County, Michigan · 0.2 MI NW of Clare Col · Structure no. 000000000008597

Built
1939
86 years old, rebuilt 1991
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
200 ft
4 main spans
Daily traffic
4,707
2007 count
Owner
State
State Highway Agency

About this bridge

M-115 over Muskegon River is a prestressed concrete stringer/multi-beam or girder carrying M-115 over Muskegon River in Osceola County, Michigan. It was built in 1939 and reconstructed in 1991, so it is 86 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,707 vehicles a day, roughly 16% of them trucks, projected to reach 5,062 by 2018. The structure is 200 ft (61 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-115
CrossesMuskegon River
Location0.2 MI NW of Clare Col
RouteState Highway 115
CountyOsceola County
StateMichigan
Coordinates43.98598, -85.09001
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length200 ft (61 m)
Longest span52 ft (15.8 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,707 (2007)
Projected traffic5,062 by 2018
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-115 over Muskegon River built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1991.

What condition is M-115 over Muskegon River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does M-115 over Muskegon River carry?

About 4,707 vehicles per day (2007 count), of which roughly 16% are trucks.

How long is M-115 over Muskegon River?

The structure is 200 ft (61 m) long with a longest span of 52 ft (15.8 m) and a deck 47 ft wide.

Who owns M-115 over Muskegon River?

It is owned by the State Highway Agency.