US Bridges

US 34 over Trib to Cedar CR

Fair

Warren County, Illinois · 1.6M W of Knox CO LN · Structure no. 094200800000000

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
8,950
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over Trib to Cedar CR is a steel culvert carrying US 34 over Trib to Cedar CR in Warren County, Illinois. It was built in 1986, so it is 39 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 5 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 8,950 vehicles a day, roughly 22% of them trucks, projected to reach 10,252 by 2046. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 34
CrossesTrib to Cedar CR
Location1.6M W of Knox CO LN
RouteU.S. Route 34
CountyWarren County
StateIllinois
Coordinates40.92047, -90.47208
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 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 Trib to Cedar CR built?

It was built in 1986, making it 39 years old in 2025.

What condition is US 34 over Trib to Cedar CR 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 October 2024.

How much traffic does US 34 over Trib to Cedar CR carry?

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

How long is US 34 over Trib to Cedar CR?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns US 34 over Trib to Cedar CR?

It is owned by the State Highway Agency.