US Bridges

Old US 36 over Walnut Creek

Poor

Scott County, Illinois · 1 MI N Winchester · Structure no. 086000400000000

Built
1940
85 years old
Condition
Poor
inspected April 2024
Type
Tee Beam
Concrete
Length
49 ft
1 main span
Daily traffic
2,750
2020 count
Owner
State
State Highway Agency

About this bridge

Old US 36 over Walnut Creek is a concrete tee beam carrying Old US 36 over Walnut Creek in Scott County, Illinois. It was built in 1940, so it is 85 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,750 vehicles a day, roughly 8% of them trucks, projected to reach 2,778 by 2046. The structure is 49 ft (14.9 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesOld US 36
CrossesWalnut Creek
Location1 MI N Winchester
CountyScott County
StateIllinois
Coordinates39.66002, -90.45707
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length49 ft (14.9 m)
Longest span44 ft (13.5 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,750 (2020)
Projected traffic2,778 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Old US 36 over Walnut Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Old US 36 over Walnut Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Old US 36 over Walnut Creek carry?

About 2,750 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Old US 36 over Walnut Creek?

The structure is 49 ft (14.9 m) long with a longest span of 44 ft (13.5 m) and a deck 32 ft wide.

Who owns Old US 36 over Walnut Creek?

It is owned by the State Highway Agency.