US Bridges

Riley Center Road over Belle River

Good

St. Clair County, Michigan · Sec. 17-18 Riley Twp. · Structure no. 000000000010085

Built
2013
12 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
2,130
2012 count
Owner
County
County Highway Agency

About this bridge

Riley Center Road over Belle River is a prestressed concrete box beam or girders - multiple carrying Riley Center Road over Belle River in St. Clair County, Michigan. It was built in 2013, so it is 12 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 2,130 vehicles a day, roughly 6% of them trucks, projected to reach 3,165 by 2032. The structure is 90 ft (27.4 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRiley Center Road
CrossesBelle River
LocationSec. 17-18 Riley Twp.
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.94559, -82.84197
Functional classRural Major 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating55.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length90 ft (27.4 m)
Longest span88 ft (26.8 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,130 (2012)
Projected traffic3,165 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Riley Center Road over Belle River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Riley Center 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 November 2023.

How much traffic does Riley Center Road over Belle River carry?

About 2,130 vehicles per day (2012 count), of which roughly 6% are trucks.

How long is Riley Center Road over Belle River?

The structure is 90 ft (27.4 m) long with a longest span of 88 ft (26.8 m) and a deck 44 ft wide.

Who owns Riley Center Road over Belle River?

It is owned by the County Highway Agency.