US Bridges

FAP 320(IL 121) over Crabapple Creek

Fair

Moultrie County, Illinois · .1 MI W of CO Line · Structure no. 070003400000000

Built
1977
48 years old, rebuilt 2004
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
2 main spans
Daily traffic
3,850
2023 count
Owner
State
State Highway Agency

About this bridge

FAP 320(IL 121) over Crabapple Creek is a prestressed concrete box beam or girders - multiple carrying FAP 320(IL 121) over Crabapple Creek in Moultrie County, Illinois. It was built in 1977 and reconstructed in 2004, so it is 48 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 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 3,850 vehicles a day, roughly 10% of them trucks, projected to reach 3,990 by 2046. The structure is 65 ft (19.8 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAP 320(IL 121)
CrossesCrabapple Creek
Location.1 MI W of CO Line
RouteState Highway 121
CountyMoultrie County
StateIllinois
Coordinates39.52281, -88.47301
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
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 inspectionMarch 2023
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 rating98.2 US tons
Inventory rating62.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span32 ft (9.9 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,850 (2023)
Projected traffic3,990 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 FAP 320(IL 121) over Crabapple Creek built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2004.

What condition is FAP 320(IL 121) over Crabapple 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 March 2023.

How much traffic does FAP 320(IL 121) over Crabapple Creek carry?

About 3,850 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is FAP 320(IL 121) over Crabapple Creek?

The structure is 65 ft (19.8 m) long with a longest span of 32 ft (9.9 m) and a deck 36 ft wide.

Who owns FAP 320(IL 121) over Crabapple Creek?

It is owned by the State Highway Agency.