US Bridges

M-37 over Nash Creek

Fair

Kent County, Michigan · 4.8 MI S of M-46 · Structure no. 000000000004849

Built
1962
63 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
3 main spans
Daily traffic
10,377
2007 count
Owner
State
State Highway Agency

About this bridge

M-37 over Nash Creek is a prestressed concrete stringer/multi-beam or girder carrying M-37 over Nash Creek in Kent County, Michigan. It was built in 1962, so it is 63 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 10,377 vehicles a day, roughly 14% of them trucks, projected to reach 6,599 by 2018. The structure is 90 ft (27.4 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-37
CrossesNash Creek
Location4.8 MI S of M-46
RouteState Highway 37
CountyKent County
StateMichigan
Coordinates43.16372, -85.72439
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width57 ft (17.3 m)
Roadway width54 ft (16.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,377 (2007)
Projected traffic6,599 by 2018
Trucks14%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Nash Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is M-37 over Nash 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 April 2023.

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

About 10,377 vehicles per day (2007 count), of which roughly 14% are trucks.

How long is M-37 over Nash Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 57 ft wide.

Who owns M-37 over Nash Creek?

It is owned by the State Highway Agency.