Structure 16952000000000 · Cook County, IL

SB I-294 over I-55

Carries SB I-294 over I-55, I294 At I55.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT687 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

687 ft end to end, longest span 179 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 multi-beam bridge.

Built20215 years old
Length687.0 ft209.4 m
Daily traffic76,550counted 2023
Last inspectedApril 2024every 24 months

Location

StateIllinois
CountyCook
LocationI294 At I55
CarriesSB I-294
CrossesI-55
Coordinates41.76076, -87.89285

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length687.0 ft (209.4 m)
Max Span179.5 ft (54.7 m)
Deck Width83.0 ft (25.3 m)
Deck Area5297.8 sq m
Main Spans4
Year Built2021

Traffic

Avg Daily Traffic76,550 (2023)
Truck Traffic19%
Lanes On Bridge4
Lanes Under Bridge7

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016952000000000

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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