Structure 16641700000000 · Cook County, IL

I-90 Skyway over 96th ST & Brc Rr

Carries I-90 Skyway over 96th ST & Brc Rr, 0.36 M SE Comm Av.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT697 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 7/9

697 ft end to end, longest span 260 ft: about 1.9 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a deck truss.

Built1958rebuilt 2003
Length696.5 ft212.3 m
Daily traffic28,700counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountyCook
Location0.36 M SE Comm Av
CarriesI-90 Skyway
Crosses96th ST & Brc Rr
Coordinates41.72123, -87.54742

Physical Characteristics

MaterialSteel
DesignTruss - Deck
Total Length696.5 ft (212.3 m)
Max Span260.2 ft (79.3 m)
Deck Width83.0 ft (25.3 m)
Deck Area5371.2 sq m
Main Spans3
Year Built1958 (reconstructed 2003)

Traffic

Avg Daily Traffic28,700 (2020)
Truck Traffic16%
Lanes On Bridge6
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016641700000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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