US Bridges

M-37 over Baldwin Creek

Fair

Lake County, Michigan · 1.0 MI S of Baldwin · Structure no. 000000000005271

Built
1929
96 years old, rebuilt 1993
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
4,771
2007 count
Owner
State
State Highway Agency

About this bridge

M-37 over Baldwin Creek is a prestressed concrete stringer/multi-beam or girder carrying M-37 over Baldwin Creek in Lake County, Michigan. It was built in 1929 and reconstructed in 1993, so it is 96 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 4,771 vehicles a day, roughly 5% of them trucks, projected to reach 6,342 by 2018. The structure is 46 ft (14 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-37
CrossesBaldwin Creek
Location1.0 MI S of Baldwin
RouteState Highway 37
CountyLake County
StateMichigan
Coordinates43.88577, -85.85177
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80.7 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length46 ft (14 m)
Longest span42 ft (12.8 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,771 (2007)
Projected traffic6,342 by 2018
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Baldwin Creek built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1993.

What condition is M-37 over Baldwin 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 May 2024.

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

About 4,771 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is M-37 over Baldwin Creek?

The structure is 46 ft (14 m) long with a longest span of 42 ft (12.8 m) and a deck 47 ft wide.

Who owns M-37 over Baldwin Creek?

It is owned by the State Highway Agency.