US Bridges

Chippewa Road over North Br Salt River

Good

Isabella County, Michigan · Sec 13-14 Denver Twp · Structure no. 000000000004356

Built
1991
34 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
121
2002 count
Owner
County
County Highway Agency

About this bridge

Chippewa Road over North Br Salt River is a prestressed concrete box beam or girders - multiple carrying Chippewa Road over North Br Salt River in Isabella County, Michigan. It was built in 1991, so it is 34 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 121 vehicles a day, projected to reach 147 by 2022. The structure is 94 ft (28.6 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesChippewa Road
CrossesNorth Br Salt River
LocationSec 13-14 Denver Twp
RouteCounty Highway 0
Coordinates43.69205, -84.62751
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.7 US tons
Inventory rating52.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length94 ft (28.6 m)
Longest span90 ft (27.4 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic121 (2002)
Projected traffic147 by 2022
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-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 Chippewa Road over North Br Salt River built?

It was built in 1991, making it 34 years old in 2025.

What condition is Chippewa Road over North Br Salt 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 Chippewa Road over North Br Salt River carry?

About 121 vehicles per day (2002 count).

How long is Chippewa Road over North Br Salt River?

The structure is 94 ft (28.6 m) long with a longest span of 90 ft (27.4 m) and a deck 31 ft wide.

Who owns Chippewa Road over North Br Salt River?

It is owned by the County Highway Agency.