US Bridges

FAP-821 (ILL-15EB) over Casey Fork Ovfl

Fair

Jefferson County, Illinois · Mt Vernon · Structure no. 041200000000000

Built
1961
64 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
68 ft
4 main spans
Daily traffic
6,100
2023 count
Owner
State
State Highway Agency

About this bridge

FAP-821 (ILL-15EB) over Casey Fork Ovfl is a concrete continuous culvert carrying FAP-821 (ILL-15EB) over Casey Fork Ovfl in Jefferson County, Illinois. It was built in 1961, so it is 64 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 6,100 vehicles a day, roughly 8% of them trucks, projected to reach 6,363 by 2046. The structure is 68 ft (20.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAP-821 (ILL-15EB)
CrossesCasey Fork Ovfl
LocationMt Vernon
RouteState Highway 15
CountyJefferson County
StateIllinois
Coordinates38.31755, -88.89008
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating41.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span19 ft (5.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2023)
Projected traffic6,363 by 2046
Trucks8%
Lanes on structure2
Traffic directionOne-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-821 (ILL-15EB) over Casey Fork Ovfl built?

It was built in 1961, making it 64 years old in 2025.

What condition is FAP-821 (ILL-15EB) over Casey Fork Ovfl 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 2025.

How much traffic does FAP-821 (ILL-15EB) over Casey Fork Ovfl carry?

About 6,100 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is FAP-821 (ILL-15EB) over Casey Fork Ovfl?

The structure is 68 ft (20.7 m) long with a longest span of 19 ft (5.7 m).

Who owns FAP-821 (ILL-15EB) over Casey Fork Ovfl?

It is owned by the State Highway Agency.