US Bridges

Shiawassee Street over Shiawassee River

Good

Shiawassee County, Michigan · In the City of Corunna · Structure no. 000000000009888

Built
2003
22 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
173 ft
3 main spans
Daily traffic
13,480
2003 count
Owner
City
City or Municipal Highway Agency

About this bridge

Shiawassee Street over Shiawassee River is a prestressed concrete box beam or girders - multiple carrying Shiawassee Street over Shiawassee River in Shiawassee County, Michigan. It was built in 2003, so it is 22 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 13,480 vehicles a day, roughly 5% of them trucks, projected to reach 18,800 by 2028. The structure is 173 ft (52.7 m) long and 59 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesShiawassee Street
CrossesShiawassee River
LocationIn the City of Corunna
RouteCity Street 286
Coordinates42.98329, -84.118
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 rating103.9 US tons
Inventory rating62.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length173 ft (52.7 m)
Longest span58 ft (17.6 m)
Deck width59 ft (18.1 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,480 (2003)
Projected traffic18,800 by 2028
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Shiawassee Street over Shiawassee River built?

It was built in 2003, making it 22 years old in 2025.

What condition is Shiawassee Street over Shiawassee 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 October 2023.

How much traffic does Shiawassee Street over Shiawassee River carry?

About 13,480 vehicles per day (2003 count), of which roughly 5% are trucks.

How long is Shiawassee Street over Shiawassee River?

The structure is 173 ft (52.7 m) long with a longest span of 58 ft (17.6 m) and a deck 59 ft wide.

Who owns Shiawassee Street over Shiawassee River?

It is owned by the City or Municipal Highway Agency.