US Bridges

FAS-826 (CH-15) over Trib Big Muddy

Good

Jefferson County, Illinois · 1 MI N Cravat · Structure no. 041501300000000

Built
1985
40 years old
Condition
Good
inspected January 2022
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
1,050
2021 count
Owner
County
County Highway Agency

About this bridge

FAS-826 (CH-15) over Trib Big Muddy is a concrete culvert carrying FAS-826 (CH-15) over Trib Big Muddy in Jefferson County, Illinois. It was built in 1985, so it is 40 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 1,050 vehicles a day, roughly 7% of them trucks, projected to reach 1,061 by 2046. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesFAS-826 (CH-15)
CrossesTrib Big Muddy
Location1 MI N Cravat
RouteCounty Highway 0
CountyJefferson County
StateIllinois
Coordinates38.43404, -89.094
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2021)
Projected traffic1,061 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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-826 (CH-15) over Trib Big Muddy built?

It was built in 1985, making it 40 years old in 2025.

What condition is FAS-826 (CH-15) over Trib Big Muddy 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 January 2022.

How much traffic does FAS-826 (CH-15) over Trib Big Muddy carry?

About 1,050 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is FAS-826 (CH-15) over Trib Big Muddy?

The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m).

Who owns FAS-826 (CH-15) over Trib Big Muddy?

It is owned by the County Highway Agency.