US Bridges

FAS 393 - Ch 4 over Walnut Creek

Good

Knox County, Illinois · E.CTR-17-T13NR3E · Structure no. 048339300000000

Built
2019
6 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
94 ft
3 main spans
Daily traffic
300
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 393 - Ch 4 over Walnut Creek is a concrete continuous slab carrying FAS 393 - Ch 4 over Walnut Creek in Knox County, Illinois. It was built in 2019, so it is 6 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 300 vehicles a day, roughly 25% of them trucks, projected to reach 303 by 2046. The structure is 94 ft (28.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFAS 393 - Ch 4
CrossesWalnut Creek
LocationE.CTR-17-T13NR3E
RouteCounty Highway 0
Coordinates41.11471, -90.17621
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length94 ft (28.7 m)
Longest span37 ft (11.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic303 by 2046
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 393 - Ch 4 over Walnut Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is FAS 393 - Ch 4 over Walnut 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 March 2024.

How much traffic does FAS 393 - Ch 4 over Walnut Creek carry?

About 300 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is FAS 393 - Ch 4 over Walnut Creek?

The structure is 94 ft (28.7 m) long with a longest span of 37 ft (11.4 m) and a deck 28 ft wide.

Who owns FAS 393 - Ch 4 over Walnut Creek?

It is owned by the County Highway Agency.