US Bridges

FAS-2797 (CH-6) over Crooked Creek

Good

Clay County, Illinois · 1 MI S Iola · Structure no. 013318000000000

Built
1983
42 years old
Condition
Good
inspected January 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
85 ft
2 main spans
Daily traffic
650
2021 count
Owner
County
County Highway Agency

About this bridge

FAS-2797 (CH-6) over Crooked Creek is a prestressed concrete box beam or girders - multiple carrying FAS-2797 (CH-6) over Crooked Creek in Clay County, Illinois. It was built in 1983, so it is 42 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 650 vehicles a day, roughly 23% of them trucks, projected to reach 657 by 2046. The structure is 85 ft (25.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFAS-2797 (CH-6)
CrossesCrooked Creek
Location1 MI S Iola
RouteCounty Highway 0
Coordinates38.81363, -88.63596
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span47 ft (14.3 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2021)
Projected traffic657 by 2046
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-2797 (CH-6) over Crooked Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is FAS-2797 (CH-6) over Crooked 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 January 2021.

How much traffic does FAS-2797 (CH-6) over Crooked Creek carry?

About 650 vehicles per day (2021 count), of which roughly 23% are trucks.

How long is FAS-2797 (CH-6) over Crooked Creek?

The structure is 85 ft (25.9 m) long with a longest span of 47 ft (14.3 m) and a deck 28 ft wide.

Who owns FAS-2797 (CH-6) over Crooked Creek?

It is owned by the County Highway Agency.