US Bridges

To I-90 Skyway over US12 20 41 Indianapo

Fair

Cook County, Illinois · 0.03 M NW 106th · Structure no. 016643400000000

Built
1958
67 years old, rebuilt 2004
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
378 ft
7 main spans
Daily traffic
28,700
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

To I-90 Skyway over US12 20 41 Indianapo is a steel continuous stringer/multi-beam or girder carrying To I-90 Skyway over US12 20 41 Indianapo in Cook County, Illinois. It was built in 1958 and reconstructed in 2004, 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 378 ft (115.2 m) long and 81 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTo I-90 Skyway
CrossesUS12 20 41 Indianapo
Location0.03 M NW 106th
RouteInterstate 90
CountyCook County
StateIllinois
Coordinates41.70382, -87.52519
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating25.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length378 ft (115.2 m)
Longest span63 ft (19.1 m)
Deck width81 ft (24.7 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic28,700 (2020)
Projected traffic28,987 by 2046
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was To I-90 Skyway over US12 20 41 Indianapo built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2004.

What condition is To I-90 Skyway over US12 20 41 Indianapo 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 December 2023.

How much traffic does To I-90 Skyway over US12 20 41 Indianapo carry?

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

How long is To I-90 Skyway over US12 20 41 Indianapo?

The structure is 378 ft (115.2 m) long with a longest span of 63 ft (19.1 m) and a deck 81 ft wide.

Who owns To I-90 Skyway over US12 20 41 Indianapo?

It is owned by the City or Municipal Highway Agency.