US Bridges

Il. 161 over Trib to Shoenbrgr CR

Good

St. Clair County, Illinois · .06 So. St. Clair Av · Structure no. 082204000000000

Built
2000
25 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
41 ft
3 main spans
Daily traffic
13,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il. 161 over Trib to Shoenbrgr CR is a concrete continuous culvert carrying Il. 161 over Trib to Shoenbrgr CR in St. Clair County, Illinois. It was built in 2000, so it is 25 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 13,500 vehicles a day, roughly 6% of them trucks, projected to reach 11,817 by 2046. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIl. 161
CrossesTrib to Shoenbrgr CR
Location.06 So. St. Clair Av
RouteState Highway 161
CountySt. Clair County
StateIllinois
Coordinates38.59506, -90.04585
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating46.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,500 (2023)
Projected traffic11,817 by 2046
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il. 161 over Trib to Shoenbrgr CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is Il. 161 over Trib to Shoenbrgr 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 April 2023.

How much traffic does Il. 161 over Trib to Shoenbrgr CR carry?

About 13,500 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Il. 161 over Trib to Shoenbrgr CR?

The structure is 41 ft (12.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Il. 161 over Trib to Shoenbrgr CR?

It is owned by the State Highway Agency.