US Bridges

FAS 237 (ch 3) over Trib. to Walnut Crk

Good

Knox County, Illinois · SW1/4 Sec 24 T13NR2E · Structure no. 048336300000000

Built
1997
28 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
375
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 237 (ch 3) over Trib. to Walnut Crk is a prestressed concrete box beam or girders - multiple carrying FAS 237 (ch 3) over Trib. to Walnut Crk in Knox County, Illinois. It was built in 1997, so it is 28 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 375 vehicles a day, roughly 9% of them trucks, projected to reach 505 by 2046. The structure is 41 ft (12.6 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFAS 237 (ch 3)
CrossesTrib. to Walnut Crk
LocationSW1/4 Sec 24 T13NR2E
RouteCounty Highway 0
Coordinates41.09396, -90.22931
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 protection8 Very GoodNo problems noted.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span39 ft (11.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2022)
Projected traffic505 by 2046
Trucks9%
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 237 (ch 3) over Trib. to Walnut Crk built?

It was built in 1997, making it 28 years old in 2025.

What condition is FAS 237 (ch 3) over Trib. to Walnut Crk 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 237 (ch 3) over Trib. to Walnut Crk carry?

About 375 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is FAS 237 (ch 3) over Trib. to Walnut Crk?

The structure is 41 ft (12.6 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.

Who owns FAS 237 (ch 3) over Trib. to Walnut Crk?

It is owned by the County Highway Agency.