Structure 16003400000000 · Cook County, IL

I- 55 EB Stevenson over Halsted ST

Carries I- 55 EB Stevenson over Halsted ST, 0.2 M SW I94.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT74 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

74 ft end to end. Lengths and the car 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 multi-beam bridge.

Built1964rebuilt 1999
Length73.8 ft22.5 m
Daily traffic33,000counted 2024
Last inspectedNovember 2024every 24 months

Location

StateIllinois
CountyCook
Location0.2 M SW I94
CarriesI- 55 EB Stevenson
CrossesHalsted ST
Coordinates41.84615, -87.64532

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length73.8 ft (22.5 m)
Max Span71.2 ft (21.7 m)
Deck Width60.4 ft (18.4 m)
Deck Area414 sq m
Main Spans1
Year Built1964 (reconstructed 1999)

Traffic

Avg Daily Traffic33,000 (2024)
Truck Traffic18%
Lanes On Bridge4
Lanes Under Bridge5

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016003400000000

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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