US Bridges

Il 120 EB over I- 94 Tri State Toll

Fair

Lake County, Illinois · 1.6 M W of US 41 · Structure no. 049022100000000

Built
2008
17 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
232 ft
2 main spans
Daily traffic
33,400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 120 EB over I- 94 Tri State Toll is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 120 EB over I- 94 Tri State Toll in Lake County, Illinois. It was built in 2008, so it is 17 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 33,400 vehicles a day, roughly 7% of them trucks, projected to reach 15,807 by 2046. The structure is 232 ft (70.8 m) long and 43 ft wide.

CarriesIl 120 EB
CrossesI- 94 Tri State Toll
Location1.6 M W of US 41
RouteState Highway 120
Coordinates42.3455, -87.92273
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length232 ft (70.8 m)
Longest span112 ft (34.2 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,400 (2023)
Projected traffic15,807 by 2046
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 120 EB over I- 94 Tri State Toll built?

It was built in 2008, making it 17 years old in 2025.

What condition is Il 120 EB 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 June 2023.

How much traffic does Il 120 EB over I- 94 Tri State Toll carry?

About 33,400 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 120 EB over I- 94 Tri State Toll?

The structure is 232 ft (70.8 m) long with a longest span of 112 ft (34.2 m) and a deck 43 ft wide.

Who owns Il 120 EB over I- 94 Tri State Toll?

It is owned by the State Highway Agency.