US Bridges

US 34 over Cedar Creek

Good

Warren County, Illinois · 0.9 MI W of Knox CO Line · Structure no. 094201900000000

Built
2023
2 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
8,950
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over Cedar Creek is a concrete culvert carrying US 34 over Cedar Creek in Warren County, Illinois. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,950 vehicles a day, roughly 22% of them trucks, projected to reach 10,252 by 2046. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 34
CrossesCedar Creek
Location0.9 MI W of Knox CO Line
RouteU.S. Route 34
CountyWarren County
StateIllinois
Coordinates40.92292, -90.45835
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length28 ft (8.6 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,950 (2023)
Projected traffic10,252 by 2046
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 US 34 over Cedar Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is US 34 over Cedar 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 2023.

How much traffic does US 34 over Cedar Creek carry?

About 8,950 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is US 34 over Cedar Creek?

The structure is 28 ft (8.6 m) long with a longest span of 13 ft (4 m).

Who owns US 34 over Cedar Creek?

It is owned by the State Highway Agency.