US Bridges

Wilmoth HWY over River Raisin

Good

Lenawee County, Michigan · 0.4 MI South of E Valley · Structure no. 000000000005684

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
102 ft
2 main spans
Daily traffic
1,503
2017 count
Owner
County
County Highway Agency

About this bridge

Wilmoth HWY over River Raisin is a prestressed concrete box beam or girders - multiple carrying Wilmoth HWY over River Raisin in Lenawee County, Michigan. It was built in 2017, so it is 8 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,503 vehicles a day, roughly 1% of them trucks, projected to reach 1,728 by 2037. The structure is 102 ft (31.1 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWilmoth HWY
CrossesRiver Raisin
Location0.4 MI South of E Valley
RouteCounty Highway 0
CountyLenawee County
StateMichigan
Coordinates41.93555, -83.96447
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating63.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length102 ft (31.1 m)
Longest span69 ft (21 m)
Deck width38 ft (11.5 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,503 (2017)
Projected traffic1,728 by 2037
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Wilmoth HWY over River Raisin built?

It was built in 2017, making it 8 years old in 2025.

What condition is Wilmoth HWY over River Raisin 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 September 2023.

How much traffic does Wilmoth HWY over River Raisin carry?

About 1,503 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Wilmoth HWY over River Raisin?

The structure is 102 ft (31.1 m) long with a longest span of 69 ft (21 m) and a deck 38 ft wide.

Who owns Wilmoth HWY over River Raisin?

It is owned by the County Highway Agency.