US Bridges

Coe Road over Little Salt River

Fair

Isabella County, Michigan · Sec 30-31 Coe Twp · Structure no. 000000000004329

Built
1980
45 years old
Condition
Fair
inspected May 2024
Type
Slab
Wood or Timber
Length
32 ft
2 main spans
Daily traffic
196
2002 count
Owner
County
County Highway Agency

About this bridge

Coe Road over Little Salt River is a wood or timber slab carrying Coe Road over Little Salt River in Isabella County, Michigan. It was built in 1980, so it is 45 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 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 196 vehicles a day, projected to reach 240 by 2022. The structure is 32 ft (9.7 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCoe Road
CrossesLittle Salt River
LocationSec 30-31 Coe Twp
RouteCounty Highway 0
CountyIsabella County
StateMichigan
Coordinates43.48074, -84.72059
Functional classRural Local

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 protection5 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; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating34.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length32 ft (9.7 m)
Longest span16 ft (4.8 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2002)
Projected traffic240 by 2022
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Coe Road over Little Salt River built?

It was built in 1980, making it 45 years old in 2025.

What condition is Coe Road over Little Salt 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 Coe Road over Little Salt River carry?

About 196 vehicles per day (2002 count).

How long is Coe Road over Little Salt River?

The structure is 32 ft (9.7 m) long with a longest span of 16 ft (4.8 m) and a deck 31 ft wide.

Who owns Coe Road over Little Salt River?

It is owned by the County Highway Agency.