US Bridges

FAS 1901 over Little Grassy Creek

Good

Williamson County, Illinois · 4 MI S of Cartervill · Structure no. 100308700000000

Built
1976
49 years old
Condition
Good
inspected February 2024
Type
Channel Beam
Concrete
Length
70 ft
2 main spans
Daily traffic
850
2021 count
Owner
County
County Highway Agency

About this bridge

FAS 1901 over Little Grassy Creek is a concrete channel beam carrying FAS 1901 over Little Grassy Creek in Williamson County, Illinois. It was built in 1976, so it is 49 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 850 vehicles a day, roughly 9% of them trucks, projected to reach 859 by 2046. The structure is 70 ft (21.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFAS 1901
CrossesLittle Grassy Creek
Location4 MI S of Cartervill
RouteCounty Highway 0
Coordinates37.67647, -89.09928
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
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 rating72.5 US tons
Inventory rating56.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span34 ft (10.4 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2021)
Projected traffic859 by 2046
Trucks9%
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 1901 over Little Grassy Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is FAS 1901 over Little Grassy 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 February 2024.

How much traffic does FAS 1901 over Little Grassy Creek carry?

About 850 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAS 1901 over Little Grassy Creek?

The structure is 70 ft (21.3 m) long with a longest span of 34 ft (10.4 m) and a deck 30 ft wide.

Who owns FAS 1901 over Little Grassy Creek?

It is owned by the County Highway Agency.