US Bridges

FAS577 over Lost Creek Branch

Fair

Cass County, Illinois · 3.5 MI E Beardstown · Structure no. 009301000000000

Built
1936
89 years old, rebuilt 1985
Condition
Fair
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
650
2023 count
Owner
County
County Highway Agency

About this bridge

FAS577 over Lost Creek Branch is a prestressed concrete box beam or girders - multiple carrying FAS577 over Lost Creek Branch in Cass County, Illinois. It was built in 1936 and reconstructed in 1985, so it is 89 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 650 vehicles a day, roughly 4% of them trucks, projected to reach 657 by 2046. The structure is 23 ft (7.1 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFAS577
CrossesLost Creek Branch
Location3.5 MI E Beardstown
RouteCounty Highway 0
Coordinates40.01987, -90.35416
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 inspectionJanuary 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating35.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length23 ft (7.1 m)
Longest span22 ft (6.8 m)
Deck width36 ft (11.1 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2023)
Projected traffic657 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 FAS577 over Lost Creek Branch built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1985.

What condition is FAS577 over Lost Creek Branch 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 January 2023.

How much traffic does FAS577 over Lost Creek Branch carry?

About 650 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is FAS577 over Lost Creek Branch?

The structure is 23 ft (7.1 m) long with a longest span of 22 ft (6.8 m) and a deck 36 ft wide.

Who owns FAS577 over Lost Creek Branch?

It is owned by the County Highway Agency.