US Bridges

TR 8 a over I-74

Poor

Vermilion County, Illinois · 1 MI W of Ill 49 · Structure no. 092014600000000

Built
1959
66 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
189 ft
4 main spans
Daily traffic
50
2023 count
Owner
State
State Highway Agency

About this bridge

TR 8 a over I-74 is a prestressed concrete stringer/multi-beam or girder carrying TR 8 a 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 poor condition with a lowest component rating of 2 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 50 vehicles a day, roughly 4% of them trucks, projected to reach 51 by 2046. The structure is 189 ft (57.5 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesTR 8 a
CrossesI-74
Location1 MI W of Ill 49
RouteCounty Highway 0
CountyVermilion County
StateIllinois
Coordinates40.12314, -87.92117
Functional classRural Local

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
Deck7 GoodSome minor problems.
Superstructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 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 length189 ft (57.5 m)
Longest span57 ft (17.4 m)
Deck width32 ft (9.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic51 by 2046
Trucks4%
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 8 a over I-74 built?

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

What condition is TR 8 a over I-74 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 December 2024.

How much traffic does TR 8 a over I-74 carry?

About 50 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is TR 8 a over I-74?

The structure is 189 ft (57.5 m) long with a longest span of 57 ft (17.4 m) and a deck 32 ft wide.

Who owns TR 8 a over I-74?

It is owned by the State Highway Agency.