US Bridges

Old M-82 over Tamarack CR

Fair

Montcalm County, Michigan · 0.3 Mi. E of US 131 · Structure no. 000000000007478

Built
1957
68 years old, rebuilt 2015
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
5,843
2015 count
Owner
County
County Highway Agency

About this bridge

Old M-82 over Tamarack CR is a steel stringer/multi-beam or girder carrying Old M-82 over Tamarack CR in Montcalm County, Michigan. It was built in 1957 and reconstructed in 2015, so it is 68 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 5,843 vehicles a day, roughly 5% of them trucks, projected to reach 6,785 by 2035. The structure is 65 ft (19.8 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOld M-82
CrossesTamarack CR
Location0.3 Mi. E of US 131
RouteCounty Highway 5978
CountyMontcalm County
StateMichigan
Coordinates43.39581, -85.50421
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating67.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length65 ft (19.8 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,843 (2015)
Projected traffic6,785 by 2035
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Old M-82 over Tamarack CR built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2015.

What condition is Old M-82 over Tamarack CR 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 September 2023.

How much traffic does Old M-82 over Tamarack CR carry?

About 5,843 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Old M-82 over Tamarack CR?

The structure is 65 ft (19.8 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns Old M-82 over Tamarack CR?

It is owned by the County Highway Agency.