US Bridges

Ainslie ST over I- 90 Jfk & Cta

Good

Cook County, Illinois · 0.7 M NW Il 50 · Structure no. 016110500000000

Built
1958
67 years old, rebuilt 2002
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
302 ft
4 main spans
Daily traffic
1,550
2022 count
Owner
State
State Highway Agency

About this bridge

Ainslie ST over I- 90 Jfk & Cta is a steel continuous stringer/multi-beam or girder carrying Ainslie ST over I- 90 Jfk & Cta in Cook County, Illinois. It was built in 1958 and reconstructed in 2002, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,550 vehicles a day, roughly 4% of them trucks, projected to reach 2,879 by 2046. The structure is 302 ft (92.1 m) long and 53 ft wide.

Location

Open in Google Maps
CarriesAinslie ST
CrossesI- 90 Jfk & Cta
Location0.7 M NW Il 50
RouteCity Street 0
CountyCook County
StateIllinois
Coordinates41.96952, -87.75899
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length302 ft (92.1 m)
Longest span104 ft (31.7 m)
Deck width53 ft (16.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2022)
Projected traffic2,879 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ainslie ST over I- 90 Jfk & Cta built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2002.

What condition is Ainslie ST over I- 90 Jfk & Cta in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Ainslie ST over I- 90 Jfk & Cta carry?

About 1,550 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Ainslie ST over I- 90 Jfk & Cta?

The structure is 302 ft (92.1 m) long with a longest span of 104 ft (31.7 m) and a deck 53 ft wide.

Who owns Ainslie ST over I- 90 Jfk & Cta?

It is owned by the State Highway Agency.