US Bridges

ST Clair HWY over Belle River

Good

St. Clair County, Michigan · Sec. 6-7 China Twp · Structure no. 000000000010138

Built
2018
7 years old
Condition
Good
inspected November 2024
Type
Truss - Thru
Steel
Length
165 ft
1 main span
Daily traffic
2,173
2016 count
Owner
County
County Highway Agency

About this bridge

ST Clair HWY over Belle River is a steel truss - thru carrying ST Clair HWY over Belle River in St. Clair County, Michigan. It was built in 2018, so it is 7 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 2,173 vehicles a day, roughly 9% of them trucks, projected to reach 3,230 by 2036. The structure is 165 ft (50.3 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesST Clair HWY
CrossesBelle River
LocationSec. 6-7 China Twp
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.79973, -82.5949
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length165 ft (50.3 m)
Longest span157 ft (48 m)
Deck width39 ft (11.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,173 (2016)
Projected traffic3,230 by 2036
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$96,000
NavigationNo navigation control on waterway

Frequently asked questions

When was ST Clair HWY over Belle River built?

It was built in 2018, making it 7 years old in 2025.

What condition is ST Clair HWY 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 November 2024.

How much traffic does ST Clair HWY over Belle River carry?

About 2,173 vehicles per day (2016 count), of which roughly 9% are trucks.

How long is ST Clair HWY over Belle River?

The structure is 165 ft (50.3 m) long with a longest span of 157 ft (48 m) and a deck 39 ft wide.

Who owns ST Clair HWY over Belle River?

It is owned by the County Highway Agency.