US Bridges

US 34 over TR 206 (150th St)

Fair

Warren County, Illinois · NW 1/4 SEC27 T11NR1W · Structure no. 094200500000000

Built
1985
40 years old
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
35 ft
1 main span
Daily traffic
8,950
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over TR 206 (150th St) is a steel culvert carrying US 34 over TR 206 (150th St) 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 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 35 ft (10.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 34
CrossesTR 206 (150th St)
LocationNW 1/4 SEC27 T11NR1W
RouteU.S. Route 34
CountyWarren County
StateIllinois
Coordinates40.91698, -90.49827
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
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 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
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 34 over TR 206 (150th St) built?

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

What condition is US 34 over TR 206 (150th St) 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 2023.

How much traffic does US 34 over TR 206 (150th St) carry?

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

How long is US 34 over TR 206 (150th St)?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m).

Who owns US 34 over TR 206 (150th St)?

It is owned by the State Highway Agency.