US Bridges

Ch 8 over Walnut Creek

Fair

Bureau County, Illinois · South Edge Walnut · Structure no. 006321000000000

Built
1931
94 years old, rebuilt 2004
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
625
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 8 over Walnut Creek is a concrete slab carrying Ch 8 over Walnut Creek in Bureau County, Illinois. It was built in 1931 and reconstructed in 2004, so it is 94 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 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 625 vehicles a day, roughly 6% of them trucks, projected to reach 631 by 2046. The structure is 43 ft (13.1 m) long and 28 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesCh 8
CrossesWalnut Creek
LocationSouth Edge Walnut
RouteCounty Highway 0
CountyBureau County
StateIllinois
Coordinates41.54942, -89.58441
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum 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 rating47.5 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span41 ft (12.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2020)
Projected traffic631 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ch 8 over Walnut Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2004.

What condition is Ch 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 March 2023.

How much traffic does Ch 8 over Walnut Creek carry?

About 625 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Ch 8 over Walnut Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.4 m) and a deck 28 ft wide.

Who owns Ch 8 over Walnut Creek?

It is owned by the County Highway Agency.