US Bridges

I- 90 WB Skyway over I- 90 94 NB Ryan

Good

Cook County, Illinois · Dan Ryan & Skyway · Structure no. 016283900000000

Built
2004
21 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
475 ft
3 main spans
Daily traffic
18,350
2021 count
Owner
State
State Highway Agency

About this bridge

I- 90 WB Skyway over I- 90 94 NB Ryan is a steel continuous stringer/multi-beam or girder carrying I- 90 WB Skyway over I- 90 94 NB Ryan in Cook County, Illinois. It was built in 2004, so it is 21 years old, younger 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 18,350 vehicles a day, roughly 12% of them trucks, projected to reach 18,534 by 2046. The structure is 475 ft (144.8 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesI- 90 WB Skyway
CrossesI- 90 94 NB Ryan
LocationDan Ryan & Skyway
RouteInterstate 90
CountyCook County
StateIllinois
Coordinates41.77555, -87.62821
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length475 ft (144.8 m)
Longest span200 ft (61 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,350 (2021)
Projected traffic18,534 by 2046
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a toll 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 I- 90 WB Skyway over I- 90 94 NB Ryan built?

It was built in 2004, making it 21 years old in 2025.

What condition is I- 90 WB Skyway over I- 90 94 NB Ryan 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 October 2023.

How much traffic does I- 90 WB Skyway over I- 90 94 NB Ryan carry?

About 18,350 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is I- 90 WB Skyway over I- 90 94 NB Ryan?

The structure is 475 ft (144.8 m) long with a longest span of 200 ft (61 m) and a deck 29 ft wide.

Who owns I- 90 WB Skyway over I- 90 94 NB Ryan?

It is owned by the State Highway Agency.