US Bridges

M-89 over Kalamazoo River

Fair

Allegan County, Michigan · 6.0 MI E of Fennville · Structure no. 000000000000087

Built
1950
75 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
360 ft
6 main spans
Daily traffic
4,200
2013 count
Owner
State
State Highway Agency

About this bridge

M-89 over Kalamazoo River is a steel stringer/multi-beam or girder carrying M-89 over Kalamazoo River in Allegan County, Michigan. It was built in 1950, so it is 75 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.

It carries about 4,200 vehicles a day, roughly 5% of them trucks, projected to reach 9,878 by 2018. The structure is 360 ft (109.7 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesM-89
CrossesKalamazoo River
Location6.0 MI E of Fennville
RouteState Highway 89
CountyAllegan County
StateMichigan
Coordinates42.59376, -85.98339
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating71.8 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length360 ft (109.7 m)
Longest span60 ft (18.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2013)
Projected traffic9,878 by 2018
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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-89 over Kalamazoo River built?

It was built in 1950, making it 75 years old in 2025.

What condition is M-89 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 July 2023.

How much traffic does M-89 over Kalamazoo River carry?

About 4,200 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is M-89 over Kalamazoo River?

The structure is 360 ft (109.7 m) long with a longest span of 60 ft (18.3 m) and a deck 35 ft wide.

Who owns M-89 over Kalamazoo River?

It is owned by the State Highway Agency.