US Bridges

FAS 339 (ch 4) over The Big Four

Fair

Ford County, Illinois · 880N 1000E · Structure no. 027342900000000

Built
2006
19 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
111 ft
3 main spans
Daily traffic
500
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 339 (ch 4) over The Big Four is a concrete continuous slab carrying FAS 339 (ch 4) over The Big Four in Ford County, Illinois. It was built in 2006, so it is 19 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 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 500 vehicles a day, roughly 7% of them trucks, projected to reach 379 by 2046. The structure is 111 ft (33.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFAS 339 (ch 4)
CrossesThe Big Four
Location880N 1000E
RouteCounty Highway 0
Coordinates40.52748, -88.27191
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic379 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 339 (ch 4) over The Big Four built?

It was built in 2006, making it 19 years old in 2025.

What condition is FAS 339 (ch 4) over The Big Four 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 May 2024.

How much traffic does FAS 339 (ch 4) over The Big Four carry?

About 500 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is FAS 339 (ch 4) over The Big Four?

The structure is 111 ft (33.8 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns FAS 339 (ch 4) over The Big Four?

It is owned by the County Highway Agency.