US Bridges

US 20 WB (lake St) over Il 64 (north Ave)

FairClosed to traffic

Cook County, Illinois · 2 M N US 45 · Structure no. 016059000000000

Built
1931
94 years old, rebuilt 2023
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
300 ft
2 main spans
Daily traffic
11,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 20 WB (lake St) over Il 64 (north Ave) is a steel continuous stringer/multi-beam or girder carrying US 20 WB (lake St) over Il 64 (north Ave) in Cook County, Illinois. It was built in 1931 and reconstructed in 2023, so it is 94 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. Its operating status is: closed to all traffic.

It carries about 11,500 vehicles a day, roughly 12% of them trucks, projected to reach 11,464 by 2046. The structure is 300 ft (91.5 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesUS 20 WB (lake St)
CrossesIl 64 (north Ave)
Location2 M N US 45
RouteU.S. Route 20
CountyCook County
StateIllinois
Coordinates41.90674, -87.91961
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating53.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length300 ft (91.5 m)
Longest span133 ft (40.5 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2023)
Projected traffic11,464 by 2046
Trucks12%
Lanes on structure1
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 20 WB (lake St) over Il 64 (north Ave) built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2023.

What condition is US 20 WB (lake St) over Il 64 (north Ave) 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 July 2023.

How much traffic does US 20 WB (lake St) over Il 64 (north Ave) carry?

About 11,500 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 20 WB (lake St) over Il 64 (north Ave)?

The structure is 300 ft (91.5 m) long with a longest span of 133 ft (40.5 m) and a deck 29 ft wide.

Who owns US 20 WB (lake St) over Il 64 (north Ave)?

It is owned by the State Highway Agency.