US Bridges

Coleman Road over North Br Chippewa River

Fair

Isabella County, Michigan · Vernon Twp Sec 19/30 · Structure no. 000000000013336

Built
1978
47 years old
Condition
Fair
inspected May 2024
Type
Culvert
Wood or Timber
Length
20 ft
3 main spans
Daily traffic
285
2005 count
Owner
County
County Highway Agency

About this bridge

Coleman Road over North Br Chippewa River is a wood or timber culvert carrying Coleman Road over North Br Chippewa River in Isabella County, Michigan. It was built in 1978, so it is 47 years old, younger 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 285 vehicles a day, roughly 3% of them trucks, projected to reach 515 by 2025. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesColeman Road
CrossesNorth Br Chippewa River
LocationVernon Twp Sec 19/30
RouteCounty Highway 0
CountyIsabella County
StateMichigan
Coordinates43.75622, -84.84747
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.9 US tons
Inventory rating30.9 US tons

Structure

Structure typeCulvert
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length20 ft (6.2 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic285 (2005)
Projected traffic515 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Coleman Road over North Br Chippewa River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Coleman Road over North Br Chippewa 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 May 2024.

How much traffic does Coleman Road over North Br Chippewa River carry?

About 285 vehicles per day (2005 count), of which roughly 3% are trucks.

How long is Coleman Road over North Br Chippewa River?

The structure is 20 ft (6.2 m) long with a longest span of 7 ft (2.1 m).

Who owns Coleman Road over North Br Chippewa River?

It is owned by the County Highway Agency.