US Bridges

Il 78 over Wildcat Creek

Good

Henry County, Illinois · 1.3 MI S Hoopole RD · Structure no. 037200900000000

Built
1981
44 years old
Condition
Good
inspected November 2022
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
1,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 78 over Wildcat Creek is a concrete culvert carrying Il 78 over Wildcat Creek in Henry County, Illinois. It was built in 1981, so it is 44 years old, younger 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 1,300 vehicles a day, roughly 26% of them trucks, projected to reach 1,296 by 2046. The structure is 32 ft (9.7 m) long. If it were closed, the detour would be 18 mi (29 km).

CarriesIl 78
CrossesWildcat Creek
Location1.3 MI S Hoopole RD
RouteState Highway 78
Coordinates41.49406, -89.91012
Functional classRural Minor Arterial

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 inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length32 ft (9.7 m)
Longest span15 ft (4.7 m)
Deck width0 ft (0 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,296 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

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 Il 78 over Wildcat Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Il 78 over Wildcat 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 November 2022.

How much traffic does Il 78 over Wildcat Creek carry?

About 1,300 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Il 78 over Wildcat Creek?

The structure is 32 ft (9.7 m) long with a longest span of 15 ft (4.7 m).

Who owns Il 78 over Wildcat Creek?

It is owned by the State Highway Agency.