US Bridges

Main ST over Kalamazoo River

FairPosted for load

Calhoun County, Michigan · Emmett Twp Sec 18 · Structure no. 000000000001314

Built
1957
68 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
120 ft
2 main spans
Daily traffic
2,812
1995 count
Owner
County
County Highway Agency

About this bridge

Main ST over Kalamazoo River is a concrete tee beam carrying Main ST over Kalamazoo River in Calhoun County, Michigan. It was built in 1957, 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,812 vehicles a day, roughly 9% of them trucks, projected to reach 5,032 by 2023. The structure is 120 ft (36.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMain ST
CrossesKalamazoo River
LocationEmmett Twp Sec 18
RouteCounty Highway 2011
CountyCalhoun County
StateMichigan
Coordinates42.29759, -85.17004
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72 US tons
Inventory rating43.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length120 ft (36.5 m)
Longest span60 ft (18.2 m)
Deck width32 ft (9.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,812 (1995)
Projected traffic5,032 by 2023
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Main ST over Kalamazoo River built?

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

What condition is Main ST over Kalamazoo 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 September 2024.

How much traffic does Main ST over Kalamazoo River carry?

About 2,812 vehicles per day (1995 count), of which roughly 9% are trucks.

How long is Main ST over Kalamazoo River?

The structure is 120 ft (36.5 m) long with a longest span of 60 ft (18.2 m) and a deck 32 ft wide.

Who owns Main ST over Kalamazoo River?

It is owned by the County Highway Agency.