US Bridges

Il 120 EB over RR - Cp

Fair

Lake County, Illinois · 0.75 M W of US 41 · Structure no. 049004800000000

Built
1960
65 years old, rebuilt 2018
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
28,700
2023 count
Owner
State
State Highway Agency

About this bridge

Il 120 EB over RR - Cp is a steel continuous stringer/multi-beam or girder carrying Il 120 EB over RR - Cp in Lake County, Illinois. It was built in 1960 and reconstructed in 2018, so it is 65 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 28,700 vehicles a day, roughly 7% of them trucks, projected to reach 13,181 by 2046. The structure is 158 ft (48.1 m) long and 37 ft wide.

Location

Open in Google Maps
CarriesIl 120 EB
CrossesRR - Cp
Location0.75 M W of US 41
RouteState Highway 120
CountyLake County
StateIllinois
Coordinates42.34681, -87.90625
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.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.1 m)
Longest span57 ft (17.4 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,700 (2023)
Projected traffic13,181 by 2046
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Il 120 EB over RR - Cp built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2018.

What condition is Il 120 EB over RR - Cp 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 January 2025.

How much traffic does Il 120 EB over RR - Cp carry?

About 28,700 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 120 EB over RR - Cp?

The structure is 158 ft (48.1 m) long with a longest span of 57 ft (17.4 m) and a deck 37 ft wide.

Who owns Il 120 EB over RR - Cp?

It is owned by the State Highway Agency.