US Bridges

I-90 Skyway over Calumet River

Fair

Cook County, Illinois · Viad Calumet Rv · Structure no. 016641900000000

Built
1958
67 years old, rebuilt 2003
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel Continuous
Length
1,302 ft
3 main spans
Daily traffic
28,700
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

I-90 Skyway over Calumet River is a steel continuous truss - thru carrying I-90 Skyway over Calumet River in Cook County, Illinois. It was built in 1958 and reconstructed in 2003, 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 fair condition with a lowest component rating of 5 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 16% of them trucks, projected to reach 28,987 by 2046. The structure is 1,302 ft (396.8 m) long and 83 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-90 Skyway
CrossesCalumet River
LocationViad Calumet Rv
RouteInterstate 90
CountyCook County
StateIllinois
Coordinates41.71554, -87.53964
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length1,302 ft (396.8 m)
Longest span650 ft (198.1 m)
Deck width83 ft (25.3 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,700 (2020)
Projected traffic28,987 by 2046
Trucks16%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$8.6 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-90 Skyway over Calumet River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2003.

What condition is I-90 Skyway over Calumet River 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 September 2023.

How much traffic does I-90 Skyway over Calumet River carry?

About 28,700 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I-90 Skyway over Calumet River?

The structure is 1,302 ft (396.8 m) long with a longest span of 650 ft (198.1 m) and a deck 83 ft wide.

Who owns I-90 Skyway over Calumet River?

It is owned by the City or Municipal Highway Agency.