US Bridges

FAS 2870 over Trib Middle Fork Ck

Fair

Franklin County, Illinois · Carlyle RD N Thomp · Structure no. 028324600000000

Built
1982
43 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
175
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 2870 over Trib Middle Fork Ck is a prestressed concrete box beam or girders - multiple carrying FAS 2870 over Trib Middle Fork Ck in Franklin County, Illinois. It was built in 1982, so it is 43 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 175 vehicles a day, roughly 27% of them trucks, projected to reach 177 by 2046. The structure is 61 ft (18.6 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFAS 2870
CrossesTrib Middle Fork Ck
LocationCarlyle RD N Thomp
RouteCounty Highway 0
Coordinates37.92626, -88.70646
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating71.1 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span59 ft (18 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2022)
Projected traffic177 by 2046
Trucks27%
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 2870 over Trib Middle Fork Ck built?

It was built in 1982, making it 43 years old in 2025.

What condition is FAS 2870 over Trib Middle Fork Ck 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 2024.

How much traffic does FAS 2870 over Trib Middle Fork Ck carry?

About 175 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is FAS 2870 over Trib Middle Fork Ck?

The structure is 61 ft (18.6 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns FAS 2870 over Trib Middle Fork Ck?

It is owned by the County Highway Agency.