US Bridges

Shepherd Road over Chippewa River

Good

Isabella County, Michigan · .35 M S NE Cor Sec 8 T14N · Structure no. 000000000004324

Built
1993
32 years old, rebuilt 2019
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
178 ft
3 main spans
Daily traffic
826
2018 count
Owner
County
County Highway Agency

About this bridge

Shepherd Road over Chippewa River is a prestressed concrete box beam or girders - single or spread carrying Shepherd Road over Chippewa River in Isabella County, Michigan. It was built in 1993 and reconstructed in 2019, so it is 32 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 826 vehicles a day, roughly 3% of them trucks, projected to reach 1,007 by 2038. The structure is 178 ft (54.3 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesShepherd Road
CrossesChippewa River
Location.35 M S NE Cor Sec 8 T14N
RouteCounty Highway 0
CountyIsabella County
StateMichigan
Coordinates43.62141, -84.68803
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length178 ft (54.3 m)
Longest span61 ft (18.5 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic826 (2018)
Projected traffic1,007 by 2038
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 Shepherd Road over Chippewa River built?

It was built in 1993, making it 32 years old in 2025. It was reconstructed in 2019.

What condition is Shepherd Road over 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 August 2023.

How much traffic does Shepherd Road over Chippewa River carry?

About 826 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is Shepherd Road over Chippewa River?

The structure is 178 ft (54.3 m) long with a longest span of 61 ft (18.5 m) and a deck 33 ft wide.

Who owns Shepherd Road over Chippewa River?

It is owned by the County Highway Agency.