US Bridges

Capac Road over Belle River

Good

St. Clair County, Michigan · Sec. 9 Berlin Twp. · Structure no. 000000000010080

Built
1984
41 years old, rebuilt 2014
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
96 ft
3 main spans
Daily traffic
5,800
2012 count
Owner
County
County Highway Agency

About this bridge

Capac Road over Belle River is a prestressed concrete stringer/multi-beam or girder carrying Capac Road over Belle River in St. Clair County, Michigan. It was built in 1984 and reconstructed in 2014, so it is 41 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 5,800 vehicles a day, roughly 8% of them trucks, projected to reach 8,620 by 2032. The structure is 96 ft (29.3 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCapac Road
CrossesBelle River
LocationSec. 9 Berlin Twp.
RouteCounty Highway 7707
CountySt. Clair County
StateMichigan
Coordinates42.96439, -82.93777
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating55.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length96 ft (29.3 m)
Longest span32 ft (9.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2012)
Projected traffic8,620 by 2032
Trucks8%
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 Capac Road over Belle River built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 2014.

What condition is Capac Road over Belle 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 2024.

How much traffic does Capac Road over Belle River carry?

About 5,800 vehicles per day (2012 count), of which roughly 8% are trucks.

How long is Capac Road over Belle River?

The structure is 96 ft (29.3 m) long with a longest span of 32 ft (9.7 m) and a deck 43 ft wide.

Who owns Capac Road over Belle River?

It is owned by the County Highway Agency.