US Bridges

Caroline Street over Shiawassee River

Good

Genesee County, Michigan · In Fenton · Structure no. 000000000002824

Built
1993
32 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
900
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Caroline Street over Shiawassee River is a prestressed concrete box beam or girders - multiple carrying Caroline Street over Shiawassee River in Genesee County, Michigan. It was built in 1993, 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 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 900 vehicles a day, roughly 2% of them trucks, projected to reach 1,050 by 2040. The structure is 34 ft (10.3 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCaroline Street
CrossesShiawassee River
LocationIn Fenton
RouteCity Street 0
Coordinates42.79653, -83.70683
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.3 m)
Longest span30 ft (9.1 m)
Deck width56 ft (17.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2020)
Projected traffic1,050 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Caroline Street over Shiawassee River built?

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

What condition is Caroline 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 September 2023.

How much traffic does Caroline Street over Shiawassee River carry?

About 900 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Caroline Street over Shiawassee River?

The structure is 34 ft (10.3 m) long with a longest span of 30 ft (9.1 m) and a deck 56 ft wide.

Who owns Caroline Street over Shiawassee River?

It is owned by the City or Municipal Highway Agency.