US Bridges

US 34 over Sbi 8 (old US 34)

Poor

Warren County, Illinois · 3 MI E of JCT 67&34 · Structure no. 094200600000000

Built
1985
40 years old
Condition
Poor
inspected October 2024
Type
Culvert
Steel
Length
35 ft
1 main span
Daily traffic
8,050
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over Sbi 8 (old US 34) is a steel culvert carrying US 34 over Sbi 8 (old US 34) 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 8,050 vehicles a day, roughly 20% of them trucks, projected to reach 11,009 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
CrossesSbi 8 (old US 34)
Location3 MI E of JCT 67&34
RouteU.S. Route 34
CountyWarren County
StateIllinois
Coordinates40.926, -90.59502
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
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating91.8 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 traffic8,050 (2023)
Projected traffic11,009 by 2046
Trucks20%
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 Sbi 8 (old US 34) built?

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

What condition is US 34 over Sbi 8 (old US 34) 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 Sbi 8 (old US 34) carry?

About 8,050 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is US 34 over Sbi 8 (old US 34)?

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

Who owns US 34 over Sbi 8 (old US 34)?

It is owned by the State Highway Agency.