US Bridges

River Road over North Br Chippewa River

Good

Isabella County, Michigan · 0.7 M W SE Cor Sec 2 T14N · Structure no. 000000000004279

Built
2011
14 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
2,151
2011 count
Owner
County
County Highway Agency

About this bridge

River Road over North Br Chippewa River is a prestressed concrete box beam or girders - multiple carrying River Road over North Br Chippewa River in Isabella County, Michigan. It was built in 2011, so it is 14 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,151 vehicles a day, roughly 3% of them trucks, projected to reach 3,196 by 2031. The structure is 68 ft (20.7 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesRiver Road
CrossesNorth Br Chippewa River
Location0.7 M W SE Cor Sec 2 T14N
RouteCounty Highway 3744
Coordinates43.62695, -84.88392
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.1 US tons
Inventory rating75 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length68 ft (20.7 m)
Longest span67 ft (20.3 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,151 (2011)
Projected traffic3,196 by 2031
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 River Road over North Br Chippewa River built?

It was built in 2011, making it 14 years old in 2025.

What condition is River Road over North Br Chippewa River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

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

About 2,151 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is River Road over North Br Chippewa River?

The structure is 68 ft (20.7 m) long with a longest span of 67 ft (20.3 m) and a deck 44 ft wide.

Who owns River Road over North Br Chippewa River?

It is owned by the County Highway Agency.