US Bridges

FAS 904 over Crab Orchard Creek

Fair

Williamson County, Illinois · 0.67 MI So Pittsburg · Structure no. 100308600000000

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
108 ft
3 main spans
Daily traffic
2,850
2021 count
Owner
County
County Highway Agency

About this bridge

FAS 904 over Crab Orchard Creek is a concrete channel beam carrying FAS 904 over Crab Orchard Creek in Williamson County, Illinois. It was built in 1972, so it is 53 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 5 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 2,850 vehicles a day, roughly 12% of them trucks, projected to reach 2,879 by 2046. The structure is 108 ft (32.9 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 904
CrossesCrab Orchard Creek
Location0.67 MI So Pittsburg
RouteCounty Highway 0
CountyWilliamson County
StateIllinois
Coordinates37.75734, -88.85507
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating42.1 US tons
Inventory rating25 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span36 ft (11 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,850 (2021)
Projected traffic2,879 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 904 over Crab Orchard Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is FAS 904 over Crab Orchard 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 2023.

How much traffic does FAS 904 over Crab Orchard Creek carry?

About 2,850 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is FAS 904 over Crab Orchard Creek?

The structure is 108 ft (32.9 m) long with a longest span of 36 ft (11 m) and a deck 38 ft wide.

Who owns FAS 904 over Crab Orchard Creek?

It is owned by the County Highway Agency.