US Bridges

Thornton-Lansing R over Il 394

Fair

Cook County, Illinois · .5 MI S. I80/294 · Structure no. 016279900000000

Built
2005
20 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
2 main spans
Daily traffic
10,250
2023 count
Owner
State
State Highway Agency

About this bridge

Thornton-Lansing R over Il 394 is a steel continuous stringer/multi-beam or girder carrying Thornton-Lansing R over Il 394 in Cook County, Illinois. It was built in 2005, so it is 20 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 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 10,250 vehicles a day, roughly 8% of them trucks, projected to reach 8,989 by 2046. The structure is 232 ft (70.8 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesThornton-Lansing R
CrossesIl 394
Location.5 MI S. I80/294
CountyCook County
StateIllinois
Coordinates41.5705, -87.58374
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: 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 rating60.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length232 ft (70.8 m)
Longest span115 ft (35 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,250 (2023)
Projected traffic8,989 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
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 Thornton-Lansing R over Il 394 built?

It was built in 2005, making it 20 years old in 2025.

What condition is Thornton-Lansing R over Il 394 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 June 2024.

How much traffic does Thornton-Lansing R over Il 394 carry?

About 10,250 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Thornton-Lansing R over Il 394?

The structure is 232 ft (70.8 m) long with a longest span of 115 ft (35 m) and a deck 35 ft wide.

Who owns Thornton-Lansing R over Il 394?

It is owned by the State Highway Agency.