US Bridges

FAS 331(CH 10) over Bluegrass Creek

Fair

Vermilion County, Illinois · 0.5 MI N of Potomac · Structure no. 092007200000000

Built
1935
90 years old, rebuilt 1990
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
106 ft
2 main spans
Daily traffic
350
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 331(CH 10) over Bluegrass Creek is a prestressed concrete box beam or girders - multiple carrying FAS 331(CH 10) over Bluegrass Creek in Vermilion County, Illinois. It was built in 1935 and reconstructed in 1990, so it is 90 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 350 vehicles a day, roughly 8% of them trucks, projected to reach 354 by 2046. The structure is 106 ft (32.3 m) long and 30 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesFAS 331(CH 10)
CrossesBluegrass Creek
Location0.5 MI N of Potomac
RouteCounty Highway 0
CountyVermilion County
StateIllinois
Coordinates40.32202, -87.80108
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating58.2 US tons
Inventory rating35.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span52 ft (15.7 m)
Deck width30 ft (9.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2023)
Projected traffic354 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 331(CH 10) over Bluegrass Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1990.

What condition is FAS 331(CH 10) over Bluegrass 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 February 2023.

How much traffic does FAS 331(CH 10) over Bluegrass Creek carry?

About 350 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is FAS 331(CH 10) over Bluegrass Creek?

The structure is 106 ft (32.3 m) long with a longest span of 52 ft (15.7 m) and a deck 30 ft wide.

Who owns FAS 331(CH 10) over Bluegrass Creek?

It is owned by the County Highway Agency.