US Bridges

Il 121(FAP 320) over Asa Creek

Fair

Moultrie County, Illinois · E. Edge Sullivan · Structure no. 070004200000000

Built
1986
39 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
44 ft
1 main span
Daily traffic
6,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il 121(FAP 320) over Asa Creek is a concrete tee beam carrying Il 121(FAP 320) over Asa Creek in Moultrie 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 6,500 vehicles a day, roughly 10% of them trucks, projected to reach 7,718 by 2046. The structure is 44 ft (13.5 m) long and 52 ft wide.

Location

Open in Google Maps
CarriesIl 121(FAP 320)
CrossesAsa Creek
LocationE. Edge Sullivan
RouteState Highway 121
CountyMoultrie County
StateIllinois
Coordinates39.60084, -88.60055
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating64.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length44 ft (13.5 m)
Longest span42 ft (12.7 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2023)
Projected traffic7,718 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 Il 121(FAP 320) over Asa Creek built?

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

What condition is Il 121(FAP 320) over Asa 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 June 2023.

How much traffic does Il 121(FAP 320) over Asa Creek carry?

About 6,500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Il 121(FAP 320) over Asa Creek?

The structure is 44 ft (13.5 m) long with a longest span of 42 ft (12.7 m) and a deck 52 ft wide.

Who owns Il 121(FAP 320) over Asa Creek?

It is owned by the State Highway Agency.