US Bridges

TR 34 B over I-74

Fair

Vermilion County, Illinois · N of Fithian · Structure no. 092015200000000

Built
1959
66 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
185 ft
4 main spans
Daily traffic
100
2023 count
Owner
State
State Highway Agency

About this bridge

TR 34 B over I-74 is a prestressed concrete stringer/multi-beam or girder carrying TR 34 B over I-74 in Vermilion County, Illinois. It was built in 1959, so it is 66 years old, older 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 100 vehicles a day, roughly 6% of them trucks, projected to reach 101 by 2046. The structure is 185 ft (56.5 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesTR 34 B
CrossesI-74
LocationN of Fithian
RouteCounty Highway 0
CountyVermilion County
StateIllinois
Coordinates40.12451, -87.87335
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length185 ft (56.5 m)
Longest span56 ft (17.1 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic101 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 TR 34 B over I-74 built?

It was built in 1959, making it 66 years old in 2025.

What condition is TR 34 B over I-74 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 January 2024.

How much traffic does TR 34 B over I-74 carry?

About 100 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is TR 34 B over I-74?

The structure is 185 ft (56.5 m) long with a longest span of 56 ft (17.1 m) and a deck 34 ft wide.

Who owns TR 34 B over I-74?

It is owned by the State Highway Agency.