US Bridges

Ill 78 over Kickapoo Creek

Good

Knox County, Illinois · 1 MI S Ill 78&8 JCT · Structure no. 048009500000000

Built
2020
5 years old
Condition
Good
inspected September 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
111 ft
3 main spans
Daily traffic
1,400
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 78 over Kickapoo Creek is a steel continuous stringer/multi-beam or girder carrying Ill 78 over Kickapoo Creek in Knox County, Illinois. It was built in 2020, so it is 5 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 1,400 vehicles a day, roughly 6% of them trucks, projected to reach 1,465 by 2046. The structure is 111 ft (33.7 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIll 78
CrossesKickapoo Creek
Location1 MI S Ill 78&8 JCT
RouteState Highway 78
CountyKnox County
StateIllinois
Coordinates40.76209, -89.98859
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating89.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length111 ft (33.7 m)
Longest span41 ft (12.5 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic1,465 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Ill 78 over Kickapoo Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Ill 78 over Kickapoo 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 September 2022.

How much traffic does Ill 78 over Kickapoo Creek carry?

About 1,400 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Ill 78 over Kickapoo Creek?

The structure is 111 ft (33.7 m) long with a longest span of 41 ft (12.5 m) and a deck 35 ft wide.

Who owns Ill 78 over Kickapoo Creek?

It is owned by the State Highway Agency.