US Bridges

M-88|N Bridge ST over Intermediate River

Fair

Antrim County, Michigan · In Bellaire · Structure no. 000000000000360

Built
1931
94 years old, rebuilt 2000
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
5,984
2019 count
Owner
State
State Highway Agency

About this bridge

M-88|N Bridge ST over Intermediate River is a steel stringer/multi-beam or girder carrying M-88|N Bridge ST over Intermediate River in Antrim County, Michigan. It was built in 1931 and reconstructed in 2000, so it is 94 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 5,984 vehicles a day, roughly 3% of them trucks, projected to reach 6,881 by 2039. The structure is 60 ft (18.3 m) long and 55 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

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CarriesM-88|N Bridge ST
CrossesIntermediate River
LocationIn Bellaire
RouteState Highway 88
CountyAntrim County
StateMichigan
Coordinates44.97845, -85.2101
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating100.8 US tons
Inventory rating60.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length60 ft (18.3 m)
Longest span59 ft (17.9 m)
Deck width55 ft (16.9 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,984 (2019)
Projected traffic6,881 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$70,000
NavigationNo navigation control on waterway

Frequently asked questions

When was M-88|N Bridge ST over Intermediate River built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2000.

What condition is M-88|N Bridge ST over Intermediate 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 August 2023.

How much traffic does M-88|N Bridge ST over Intermediate River carry?

About 5,984 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is M-88|N Bridge ST over Intermediate River?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (17.9 m) and a deck 55 ft wide.

Who owns M-88|N Bridge ST over Intermediate River?

It is owned by the State Highway Agency.