US Bridges

M-37 over White River

Fair

Newaygo County, Michigan · 0.3 MI S of White Cloud · Structure no. 000000000007724

Built
1928
97 years old, rebuilt 1984
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
6,100
2013 count
Owner
State
State Highway Agency

About this bridge

M-37 over White River is a steel stringer/multi-beam or girder carrying M-37 over White River in Newaygo County, Michigan. It was built in 1928 and reconstructed in 1984, so it is 97 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 6,100 vehicles a day, roughly 5% of them trucks, projected to reach 9,067 by 2018. The structure is 45 ft (13.7 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-37
CrossesWhite River
Location0.3 MI S of White Cloud
RouteState Highway 37
CountyNewaygo County
StateMichigan
Coordinates43.54554, -85.77163
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 inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating70.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length45 ft (13.7 m)
Longest span43 ft (13 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2013)
Projected traffic9,067 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 White River built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1984.

What condition is M-37 over White 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 2024.

How much traffic does M-37 over White River carry?

About 6,100 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is M-37 over White River?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13 m) and a deck 37 ft wide.

Who owns M-37 over White River?

It is owned by the State Highway Agency.