Structure 16019900000000 · Cook County, IL

Il 1 (halsted ST over I- 80 294 Tri State

Carries Il 1 (halsted ST over I- 80 294 Tri State, 1.5 M S US 6.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT231 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

231 ft end to end, longest span 72 ft: about 3 semi-trucks nose to tail. 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.

Built1958rebuilt 2012
Length230.6 ft70.3 m
Daily traffic35,000counted 2023
Last inspectedMay 2023every 24 months

Location

StateIllinois
CountyCook
Location1.5 M S US 6
CarriesIl 1 (halsted ST
CrossesI- 80 294 Tri State
Coordinates41.57815, -87.63645

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length230.6 ft (70.3 m)
Max Span72.2 ft (22 m)
Deck Width94.2 ft (28.7 m)
Deck Area2017.6 sq m
Main Spans4
Year Built1958 (reconstructed 2012)

Traffic

Avg Daily Traffic35,000 (2023)
Truck Traffic6%
Lanes On Bridge6
Lanes Under Bridge9

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016019900000000

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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