US Bridges

Il 161 over Trib to Shoal Creek

Good

Clinton County, Illinois · Just W of Germantown · Structure no. 014202200000000

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
4,800
2023 count
Owner
State
State Highway Agency

About this bridge

Il 161 over Trib to Shoal Creek is a concrete culvert carrying Il 161 over Trib to Shoal Creek in Clinton County, Illinois. It was built in 2005, so it is 20 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 4,800 vehicles a day, roughly 8% of them trucks, projected to reach 6,435 by 2046. The structure is 27 ft (8.1 m) long and 32 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesIl 161
CrossesTrib to Shoal Creek
LocationJust W of Germantown
RouteState Highway 161
CountyClinton County
StateIllinois
Coordinates38.55234, -89.5535
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
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
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span12 ft (3.7 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2023)
Projected traffic6,435 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

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 Shoal Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Il 161 over Trib to Shoal Creek 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 Shoal Creek carry?

About 4,800 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Il 161 over Trib to Shoal Creek?

The structure is 27 ft (8.1 m) long with a longest span of 12 ft (3.7 m) and a deck 32 ft wide.

Who owns Il 161 over Trib to Shoal Creek?

It is owned by the State Highway Agency.