US Bridges

FAS 841 over West Fork Creek

Fair

St. Clair County, Illinois · 4.5MI S JCT Ill 158 · Structure no. 082303300000000

Built
1959
66 years old, rebuilt 1992
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
3,250
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 841 over West Fork Creek is a steel stringer/multi-beam or girder carrying FAS 841 over West Fork Creek in St. Clair County, Illinois. It was built in 1959 and reconstructed in 1992, so it is 66 years old, older 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 3,250 vehicles a day, roughly 8% of them trucks, projected to reach 3,030 by 2046. The structure is 63 ft (19.3 m) long and 36 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

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CarriesFAS 841
CrossesWest Fork Creek
Location4.5MI S JCT Ill 158
RouteCounty Highway 0
CountySt. Clair County
StateIllinois
Coordinates38.40725, -90.06411
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103.6 US tons
Inventory rating62.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.3 m)
Longest span60 ft (18.2 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,250 (2023)
Projected traffic3,030 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 841 over West Fork Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1992.

What condition is FAS 841 over West Fork 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 March 2024.

How much traffic does FAS 841 over West Fork Creek carry?

About 3,250 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is FAS 841 over West Fork Creek?

The structure is 63 ft (19.3 m) long with a longest span of 60 ft (18.2 m) and a deck 36 ft wide.

Who owns FAS 841 over West Fork Creek?

It is owned by the County Highway Agency.