US Bridges

FAS 583/CH 18 over Cedar Creek

Fair

Adams County, Illinois · 1.3MI. E LA Prairie · Structure no. 001332000000000

Built
1987
38 years old
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
725
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 583/CH 18 over Cedar Creek is a prestressed concrete box beam or girders - multiple carrying FAS 583/CH 18 over Cedar Creek in Adams County, Illinois. It was built in 1987, so it is 38 years old, younger 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 725 vehicles a day, roughly 15% of them trucks, projected to reach 505 by 2046. The structure is 62 ft (18.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS 583/CH 18
CrossesCedar Creek
Location1.3MI. E LA Prairie
RouteCounty Highway 0
CountyAdams County
StateIllinois
Coordinates40.13513, -90.97831
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 protection7 GoodSome minor problems.
Last inspectionDecember 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span58 ft (17.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2024)
Projected traffic505 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 583/CH 18 over Cedar Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is FAS 583/CH 18 over Cedar 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 December 2023.

How much traffic does FAS 583/CH 18 over Cedar Creek carry?

About 725 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is FAS 583/CH 18 over Cedar Creek?

The structure is 62 ft (18.9 m) long with a longest span of 58 ft (17.7 m) and a deck 28 ft wide.

Who owns FAS 583/CH 18 over Cedar Creek?

It is owned by the County Highway Agency.