US Bridges

Clover Leaf/ TR 10 over Prairie Dupont Creek

Fair

St. Clair County, Illinois · 2.0 MI E Ill 163 · Structure no. 082410800000000

Built
1982
43 years old
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
125
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Clover Leaf/ TR 10 over Prairie Dupont Creek is a prestressed concrete box beam or girders - multiple carrying Clover Leaf/ TR 10 over Prairie Dupont Creek in St. Clair County, Illinois. It was built in 1982, so it is 43 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 125 vehicles a day, roughly 9% of them trucks, projected to reach 202 by 2046. The structure is 122 ft (37.2 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesClover Leaf/ TR 10
CrossesPrairie Dupont Creek
Location2.0 MI E Ill 163
RouteCounty Highway 0
CountySt. Clair County
StateIllinois
Coordinates38.51856, -90.06834
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic202 by 2046
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

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 Clover Leaf/ TR 10 over Prairie Dupont Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Clover Leaf/ TR 10 over Prairie Dupont Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does Clover Leaf/ TR 10 over Prairie Dupont Creek carry?

About 125 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Clover Leaf/ TR 10 over Prairie Dupont Creek?

The structure is 122 ft (37.2 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns Clover Leaf/ TR 10 over Prairie Dupont Creek?

It is owned by the Town or Township Highway Agency.