US Bridges

US 34 over US 67

Fair

Warren County, Illinois · SW Edge of Monmouth · Structure no. 094004100000000

Built
1992
33 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
222 ft
2 main spans
Daily traffic
2,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over US 67 is a steel continuous stringer/multi-beam or girder carrying US 34 over US 67 in Warren County, Illinois. It was built in 1992, so it is 33 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 2,800 vehicles a day, roughly 26% of them trucks, projected to reach 2,778 by 2046. The structure is 222 ft (67.7 m) long and 69 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesUS 34
CrossesUS 67
LocationSW Edge of Monmouth
RouteU.S. Route 34
CountyWarren County
StateIllinois
Coordinates40.89089, -90.66187
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
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
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span119 ft (36.4 m)
Deck width69 ft (21.1 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2023)
Projected traffic2,778 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed26.7 mi (43 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 US 67 built?

It was built in 1992, making it 33 years old in 2025.

What condition is US 34 over US 67 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 August 2024.

How much traffic does US 34 over US 67 carry?

About 2,800 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is US 34 over US 67?

The structure is 222 ft (67.7 m) long with a longest span of 119 ft (36.4 m) and a deck 69 ft wide.

Who owns US 34 over US 67?

It is owned by the State Highway Agency.