US Bridges

Ill 8 over Walnut Creek

Fair

Peoria County, Illinois · 0.5 MI E of Ill 78 · Structure no. 072016200000000

Built
1995
30 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
119 ft
3 main spans
Daily traffic
1,650
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 8 over Walnut Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Ill 8 over Walnut Creek in Peoria 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 1,650 vehicles a day, roughly 5% of them trucks, projected to reach 2,172 by 2046. The structure is 119 ft (36.2 m) long and 42 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesIll 8
CrossesWalnut Creek
Location0.5 MI E of Ill 78
RouteState Highway 8
CountyPeoria County
StateIllinois
Coordinates40.7928, -89.95889
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating77.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length119 ft (36.2 m)
Longest span42 ft (12.7 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,650 (2023)
Projected traffic2,172 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 8 over Walnut Creek built?

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

What condition is Ill 8 over Walnut Creek 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 June 2024.

How much traffic does Ill 8 over Walnut Creek carry?

About 1,650 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Ill 8 over Walnut Creek?

The structure is 119 ft (36.2 m) long with a longest span of 42 ft (12.7 m) and a deck 42 ft wide.

Who owns Ill 8 over Walnut Creek?

It is owned by the State Highway Agency.