US Bridges

US 34 over Cedar Creek Trib

Poor

Warren County, Illinois · NE 1/4 SEC28 T11NR1W · Structure no. 094200300000000

Built
1985
40 years old
Condition
Poor
inspected October 2024
Type
Culvert
Steel
Length
36 ft
3 main spans
Daily traffic
8,950
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over Cedar Creek Trib is a steel culvert carrying US 34 over Cedar Creek Trib in Warren County, Illinois. It was built in 1985, so it is 40 years old, younger 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 8,950 vehicles a day, roughly 22% of them trucks, projected to reach 10,252 by 2046. The structure is 36 ft (11 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 34
CrossesCedar Creek Trib
LocationNE 1/4 SEC28 T11NR1W
RouteU.S. Route 34
CountyWarren County
StateIllinois
Coordinates40.91703, -90.49864
Functional classUrban Principal Arterial - Other Freeway or Expressway

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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating98.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11 m)
Longest span10 ft (3 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 structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Trib built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 34 over Cedar Creek Trib 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 October 2024.

How much traffic does US 34 over Cedar Creek Trib carry?

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

How long is US 34 over Cedar Creek Trib?

The structure is 36 ft (11 m) long with a longest span of 10 ft (3 m).

Who owns US 34 over Cedar Creek Trib?

It is owned by the State Highway Agency.