US Bridges

I 24 over Mccorkle Creek

Good

Johnson County, Illinois · 0.15 MI S Ill 146 · Structure no. 044200200000000

Built
1971
54 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
48 ft
3 main spans
Daily traffic
20,500
2024 count
Owner
State
State Highway Agency

About this bridge

I 24 over Mccorkle Creek is a concrete continuous culvert carrying I 24 over Mccorkle Creek in Johnson County, Illinois. It was built in 1971, so it is 54 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20,500 vehicles a day, roughly 41% of them trucks, projected to reach 22,050 by 2046. The structure is 48 ft (14.6 m) long. If it were closed, the detour would be 34.2 mi (55 km).

CarriesI 24
CrossesMccorkle Creek
Location0.15 MI S Ill 146
RouteInterstate 24
Coordinates37.41168, -88.86889
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length48 ft (14.6 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,500 (2024)
Projected traffic22,050 by 2046
Trucks41%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 24 over Mccorkle Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is I 24 over Mccorkle Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does I 24 over Mccorkle Creek carry?

About 20,500 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is I 24 over Mccorkle Creek?

The structure is 48 ft (14.6 m) long with a longest span of 20 ft (6.1 m).

Who owns I 24 over Mccorkle Creek?

It is owned by the State Highway Agency.