US Bridges

M-37 over Slagle Creek

Fair

Wexford County, Michigan · 6.0 MI S of Mesick · Structure no. 000000000012533

Built
1954
71 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
30 ft
1 main span
Daily traffic
1,318
2007 count
Owner
State
State Highway Agency

About this bridge

M-37 over Slagle Creek is a concrete tee beam carrying M-37 over Slagle Creek in Wexford County, Michigan. It was built in 1954, so it is 71 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 6 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 1,318 vehicles a day, roughly 16% of them trucks, projected to reach 1,980 by 2018. The structure is 30 ft (9.1 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesM-37
CrossesSlagle Creek
Location6.0 MI S of Mesick
RouteState Highway 37
CountyWexford County
StateMichigan
Coordinates44.3187, -85.76112
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating92.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width80 ft (24.3 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,318 (2007)
Projected traffic1,980 by 2018
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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-37 over Slagle Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is M-37 over Slagle Creek 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 July 2024.

How much traffic does M-37 over Slagle Creek carry?

About 1,318 vehicles per day (2007 count), of which roughly 16% are trucks.

How long is M-37 over Slagle Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 80 ft wide.

Who owns M-37 over Slagle Creek?

It is owned by the State Highway Agency.