US Bridges

FAS 2936 (unmarked over Br. Bigcreek

Fair

Union County, Illinois · Dongola · Structure no. 091006500000000

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
1,700
2020 count
Owner
State
State Highway Agency

About this bridge

FAS 2936 (unmarked over Br. Bigcreek is a prestressed concrete box beam or girders - multiple carrying FAS 2936 (unmarked over Br. Bigcreek in Union County, Illinois. It was built in 1986, so it is 39 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 1,700 vehicles a day, roughly 4% of them trucks, projected to reach 1,717 by 2046. The structure is 71 ft (21.6 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAS 2936 (unmarked
CrossesBr. Bigcreek
LocationDongola
RouteCounty Highway 0
CountyUnion County
StateIllinois
Coordinates37.36478, -89.16329
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span66 ft (20.2 m)
Deck width31 ft (9.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2020)
Projected traffic1,717 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 2936 (unmarked over Br. Bigcreek built?

It was built in 1986, making it 39 years old in 2025.

What condition is FAS 2936 (unmarked over Br. Bigcreek 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 April 2024.

How much traffic does FAS 2936 (unmarked over Br. Bigcreek carry?

About 1,700 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is FAS 2936 (unmarked over Br. Bigcreek?

The structure is 71 ft (21.6 m) long with a longest span of 66 ft (20.2 m) and a deck 31 ft wide.

Who owns FAS 2936 (unmarked over Br. Bigcreek?

It is owned by the State Highway Agency.