US Bridges

FAP-821 (ILL-15)I over Cnic RR

Fair

Jefferson County, Illinois · .2 MI W Bluford RD · Structure no. 041010200000000

Built
1995
30 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

FAP-821 (ILL-15)I over Cnic RR is a concrete slab carrying FAP-821 (ILL-15)I over Cnic RR in Jefferson County, Illinois. It was built in 1995, so it is 30 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 3,500 vehicles a day, roughly 11% of them trucks, projected to reach 3,434 by 2046. The structure is 40 ft (12.1 m) long and 39 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

Location

Open in Google Maps
CarriesFAP-821 (ILL-15)I
CrossesCnic RR
Location.2 MI W Bluford RD
RouteState Highway 15
CountyJefferson County
StateIllinois
Coordinates38.34275, -88.72702
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.1 m)
Longest span37 ft (11.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic3,434 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed47.2 mi (76 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAP-821 (ILL-15)I over Cnic RR built?

It was built in 1995, making it 30 years old in 2025.

What condition is FAP-821 (ILL-15)I over Cnic RR 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 February 2025.

How much traffic does FAP-821 (ILL-15)I over Cnic RR carry?

About 3,500 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAP-821 (ILL-15)I over Cnic RR?

The structure is 40 ft (12.1 m) long with a longest span of 37 ft (11.3 m) and a deck 39 ft wide.

Who owns FAP-821 (ILL-15)I over Cnic RR?

It is owned by the State Highway Agency.