US Bridges

FAS 782 over Flat Branch Creek

Fair

Clinton County, Illinois · County Line Road · Structure no. 014300000000000

Built
1958
67 years old, rebuilt 2006
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
115 ft
3 main spans
Daily traffic
1,000
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 782 over Flat Branch Creek is a prestressed concrete box beam or girders - multiple carrying FAS 782 over Flat Branch Creek in Clinton County, Illinois. It was built in 1958 and reconstructed in 2006, so it is 67 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 1,000 vehicles a day, roughly 7% of them trucks, projected to reach 1,100 by 2046. The structure is 115 ft (34.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAS 782
CrossesFlat Branch Creek
LocationCounty Line Road
RouteCounty Highway 0
CountyClinton County
StateIllinois
Coordinates38.74132, -89.3494
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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length115 ft (34.9 m)
Longest span38 ft (11.6 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,100 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$480.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 782 over Flat Branch Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2006.

What condition is FAS 782 over Flat Branch 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 September 2023.

How much traffic does FAS 782 over Flat Branch Creek carry?

About 1,000 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is FAS 782 over Flat Branch Creek?

The structure is 115 ft (34.9 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.

Who owns FAS 782 over Flat Branch Creek?

It is owned by the County Highway Agency.