US Bridges

Oak Grove Sch. TR over Br Little Silver Cr.

Good

St. Clair County, Illinois · 1 MI W Ch 50 · Structure no. 082414900000000

Built
2003
22 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
325
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Oak Grove Sch. TR over Br Little Silver Cr. is a prestressed concrete box beam or girders - multiple carrying Oak Grove Sch. TR over Br Little Silver Cr. in St. Clair County, Illinois. It was built in 2003, so it is 22 years old, younger than the Illinois average of 45.3 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 325 vehicles a day, roughly 7% of them trucks, projected to reach 429 by 2046. The structure is 62 ft (18.9 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesOak Grove Sch. TR
CrossesBr Little Silver Cr.
Location1 MI W Ch 50
RouteCounty Highway 0
CountySt. Clair County
StateIllinois
Coordinates38.58286, -89.76655
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 48 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2023)
Projected traffic429 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Oak Grove Sch. TR over Br Little Silver Cr. built?

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

What condition is Oak Grove Sch. TR over Br Little Silver Cr. 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 February 2023.

How much traffic does Oak Grove Sch. TR over Br Little Silver Cr. carry?

About 325 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Oak Grove Sch. TR over Br Little Silver Cr.?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Oak Grove Sch. TR over Br Little Silver Cr.?

It is owned by the Town or Township Highway Agency.