US Bridges

Il 137 over I- 94 Tri State Toll

Fair

Lake County, Illinois · 1.0 M W of Il 43 · Structure no. 049006400000000

Built
1958
67 years old, rebuilt 1996
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
234 ft
2 main spans
Daily traffic
29,900
2023 count
Owner
State
State Highway Agency

About this bridge

Il 137 over I- 94 Tri State Toll is a steel continuous stringer/multi-beam or girder carrying Il 137 over I- 94 Tri State Toll in Lake County, Illinois. It was built in 1958 and reconstructed in 1996, 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 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 29,900 vehicles a day, roughly 9% of them trucks, projected to reach 13,888 by 2046. The structure is 234 ft (71.2 m) long and 121 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesIl 137
CrossesI- 94 Tri State Toll
Location1.0 M W of Il 43
RouteState Highway 137
CountyLake County
StateIllinois
Coordinates42.31162, -87.90469
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 inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.6 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length234 ft (71.2 m)
Longest span68 ft (20.7 m)
Deck width121 ft (36.9 m)
Roadway width73 ft (22.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,900 (2023)
Projected traffic13,888 by 2046
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 Il 137 over I- 94 Tri State Toll built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1996.

What condition is Il 137 over I- 94 Tri State Toll 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 May 2024.

How much traffic does Il 137 over I- 94 Tri State Toll carry?

About 29,900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 137 over I- 94 Tri State Toll?

The structure is 234 ft (71.2 m) long with a longest span of 68 ft (20.7 m) and a deck 121 ft wide.

Who owns Il 137 over I- 94 Tri State Toll?

It is owned by the State Highway Agency.