US Bridges

FAS 394-CH 12 over Walnut Creek

Fair

Knox County, Illinois · NE-21-T13NR3E · Structure no. 048330700000000

Built
1990
35 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 394-CH 12 over Walnut Creek is a prestressed concrete box beam or girders - multiple carrying FAS 394-CH 12 over Walnut Creek in Knox County, Illinois. It was built in 1990, so it is 35 years old, younger 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 200 vehicles a day, roughly 18% of them trucks, projected to reach 278 by 2046. The structure is 120 ft (36.7 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesFAS 394-CH 12
CrossesWalnut Creek
LocationNE-21-T13NR3E
RouteCounty Highway 0
CountyKnox County
StateIllinois
Coordinates41.10425, -90.16193
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length120 ft (36.7 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic278 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 394-CH 12 over Walnut Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is FAS 394-CH 12 over Walnut 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 February 2025.

How much traffic does FAS 394-CH 12 over Walnut Creek carry?

About 200 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is FAS 394-CH 12 over Walnut Creek?

The structure is 120 ft (36.7 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns FAS 394-CH 12 over Walnut Creek?

It is owned by the County Highway Agency.