US Bridges

I-90 Skyway EB over Service Building

Fair

Cook County, Illinois · E Yates & Anthny P8C · Structure no. 016648200000000

Built
1958
67 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
123 ft
4 main spans
Daily traffic
14,350
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

I-90 Skyway EB over Service Building is a concrete slab carrying I-90 Skyway EB over Service Building in Cook County, Illinois. It was built in 1958, 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 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 14,350 vehicles a day, roughly 16% of them trucks, projected to reach 14,494 by 2046. The structure is 123 ft (37.5 m) long and 122 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesI-90 Skyway EB
CrossesService Building
LocationE Yates & Anthny P8C
RouteInterstate 90
CountyCook County
StateIllinois
Coordinates41.73483, -87.56572
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span30 ft (9.1 m)
Deck width122 ft (37.2 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,350 (2020)
Projected traffic14,494 by 2046
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed8.7 mi (14 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 Skyway EB over Service Building built?

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

What condition is I-90 Skyway EB over Service Building 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 August 2023.

How much traffic does I-90 Skyway EB over Service Building carry?

About 14,350 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I-90 Skyway EB over Service Building?

The structure is 123 ft (37.5 m) long with a longest span of 30 ft (9.1 m) and a deck 122 ft wide.

Who owns I-90 Skyway EB over Service Building?

It is owned by the City or Municipal Highway Agency.