US Bridges

FAS-717 (CH-23) over Trib Casser Creek

Fair

Fayette County, Illinois · 0.8 MI E Shobonier · Structure no. 026500600000000

Built
1931
94 years old, rebuilt 1947
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
27 ft
3 main spans
Daily traffic
450
2023 count
Owner
County
County Highway Agency

About this bridge

FAS-717 (CH-23) over Trib Casser Creek is a concrete culvert carrying FAS-717 (CH-23) over Trib Casser Creek in Fayette County, Illinois. It was built in 1931 and reconstructed in 1947, so it is 94 years old, older 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 6 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 450 vehicles a day, roughly 13% of them trucks, projected to reach 714 by 2046. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFAS-717 (CH-23)
CrossesTrib Casser Creek
Location0.8 MI E Shobonier
RouteCounty Highway 0
Coordinates38.86701, -89.07061
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length27 ft (8.2 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2023)
Projected traffic714 by 2046
Trucks13%
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

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 FAS-717 (CH-23) over Trib Casser Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1947.

What condition is FAS-717 (CH-23) over Trib Casser 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 January 2023.

How much traffic does FAS-717 (CH-23) over Trib Casser Creek carry?

About 450 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is FAS-717 (CH-23) over Trib Casser Creek?

The structure is 27 ft (8.2 m) long with a longest span of 9 ft (2.7 m).

Who owns FAS-717 (CH-23) over Trib Casser Creek?

It is owned by the County Highway Agency.