US Bridges

Sharon Valley Road over River Raisin

Good

Washtenaw County, Michigan · Sharon Twp Sec 31 · Structure no. 000000000010969

Built
2019
6 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
997
2018 count
Owner
County
County Highway Agency

About this bridge

Sharon Valley Road over River Raisin is a prestressed concrete stringer/multi-beam or girder carrying Sharon Valley Road over River Raisin in Washtenaw County, Michigan. It was built in 2019, so it is 6 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 997 vehicles a day, roughly 11% of them trucks, projected to reach 1,105 by 2038. The structure is 85 ft (25.9 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSharon Valley Road
CrossesRiver Raisin
LocationSharon Twp Sec 31
RouteCounty Highway 0
CountyWashtenaw County
StateMichigan
Coordinates42.16771, -84.12271
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length85 ft (25.9 m)
Longest span81 ft (24.8 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic997 (2018)
Projected traffic1,105 by 2038
Trucks11%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$413,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sharon Valley Road over River Raisin built?

It was built in 2019, making it 6 years old in 2025.

What condition is Sharon Valley Road 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 June 2023.

How much traffic does Sharon Valley Road over River Raisin carry?

About 997 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is Sharon Valley Road over River Raisin?

The structure is 85 ft (25.9 m) long with a longest span of 81 ft (24.8 m) and a deck 34 ft wide.

Who owns Sharon Valley Road over River Raisin?

It is owned by the County Highway Agency.