US Bridges

I-294 80 EB over Thorn CR

Fair

Cook County, Illinois · 0.6 M W I94 P24 · Structure no. 016972400000000

Built
1958
67 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
178 ft
3 main spans
Daily traffic
87,000
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-294 80 EB over Thorn CR is a prestressed concrete stringer/multi-beam or girder carrying I-294 80 EB over Thorn CR in Cook County, Illinois. It was built in 1958, so it is 67 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 6 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 87,000 vehicles a day, roughly 22% of them trucks, projected to reach 72,518 by 2046. The structure is 178 ft (54.3 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-294 80 EB
CrossesThorn CR
Location0.6 M W I94 P24
RouteInterstate 80
Coordinates41.57789, -87.59429
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length178 ft (54.3 m)
Longest span62 ft (18.9 m)
Deck width67 ft (20.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87,000 (2023)
Projected traffic72,518 by 2046
Trucks22%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-294 80 EB over Thorn CR built?

It was built in 1958, making it 67 years old in 2025.

What condition is I-294 80 EB over Thorn CR 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 April 2024.

How much traffic does I-294 80 EB over Thorn CR carry?

About 87,000 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-294 80 EB over Thorn CR?

The structure is 178 ft (54.3 m) long with a longest span of 62 ft (18.9 m) and a deck 67 ft wide.

Who owns I-294 80 EB over Thorn CR?

It is owned by the State Toll Authority.