US Bridges

US-131SB & M-46SB over Tamarack Creek

Fair

Montcalm County, Michigan · 0.5 MI S of M-82 · Structure no. 000000000007412

Built
1972
53 years old, rebuilt 2012
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
3 main spans
Daily traffic
26,700
2011 count
Owner
State
State Highway Agency

About this bridge

US-131SB & M-46SB over Tamarack Creek is a prestressed concrete stringer/multi-beam or girder carrying US-131SB & M-46SB over Tamarack Creek in Montcalm County, Michigan. It was built in 1972 and reconstructed in 2012, so it is 53 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 26,700 vehicles a day, roughly 11% of them trucks, projected to reach 34,200 by 2031. The structure is 167 ft (50.9 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS-131SB & M-46SB
CrossesTamarack Creek
Location0.5 MI S of M-82
RouteU.S. Route 131
CountyMontcalm County
StateMichigan
Coordinates43.39039, -85.51733
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length167 ft (50.9 m)
Longest span56 ft (17 m)
Deck width48 ft (14.7 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,700 (2011)
Projected traffic34,200 by 2031
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 US-131SB & M-46SB over Tamarack Creek built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2012.

What condition is US-131SB & M-46SB over Tamarack 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 2023.

How much traffic does US-131SB & M-46SB over Tamarack Creek carry?

About 26,700 vehicles per day (2011 count), of which roughly 11% are trucks.

How long is US-131SB & M-46SB over Tamarack Creek?

The structure is 167 ft (50.9 m) long with a longest span of 56 ft (17 m) and a deck 48 ft wide.

Who owns US-131SB & M-46SB over Tamarack Creek?

It is owned by the State Highway Agency.