US Bridges

Il 23(FAP 324) over Cc & Pac. RR

Fair

DeKalb County, Illinois · 0.7 MI S JCT Ill 72 · Structure no. 019000500000000

Built
1925
100 years old, rebuilt 2006
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
143 ft
3 main spans
Daily traffic
4,350
2023 count
Owner
State
State Highway Agency

About this bridge

Il 23(FAP 324) over Cc & Pac. RR is a prestressed concrete box beam or girders - multiple carrying Il 23(FAP 324) over Cc & Pac. RR in DeKalb County, Illinois. It was built in 1925 and reconstructed in 2006, so it is 100 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 4,350 vehicles a day, roughly 13% of them trucks, projected to reach 5,320 by 2046. The structure is 143 ft (43.5 m) long and 48 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesIl 23(FAP 324)
CrossesCc & Pac. RR
Location0.7 MI S JCT Ill 72
RouteState Highway 23
CountyDeKalb County
StateIllinois
Coordinates42.08573, -88.6845
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating68.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3 (+2 approach)
Design loadHS 20
Structure length143 ft (43.5 m)
Longest span46 ft (14.1 m)
Deck width48 ft (14.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,350 (2023)
Projected traffic5,320 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed31.7 mi (51 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 Il 23(FAP 324) over Cc & Pac. RR built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2006.

What condition is Il 23(FAP 324) over Cc & Pac. 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 March 2023.

How much traffic does Il 23(FAP 324) over Cc & Pac. RR carry?

About 4,350 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Il 23(FAP 324) over Cc & Pac. RR?

The structure is 143 ft (43.5 m) long with a longest span of 46 ft (14.1 m) and a deck 48 ft wide.

Who owns Il 23(FAP 324) over Cc & Pac. RR?

It is owned by the State Highway Agency.