Structure 16018900000000 · Cook County, IL

69th ST over I- 94 Dan Ryan

Carries 69th ST over I- 94 Dan Ryan, At State.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT268 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

268 ft end to end, longest span 74 ft: about 4 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.

Built1960rebuilt 1999
Length268.0 ft81.7 m
Daily traffic9,550counted 2022
Last inspectedFebruary 2024every 24 months

Location

StateIllinois
CountyCook
LocationAt State
Carries69th ST
CrossesI- 94 Dan Ryan
Coordinates41.76918, -87.62613

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length268.0 ft (81.7 m)
Max Span74.1 ft (22.6 m)
Deck Width94.8 ft (28.9 m)
Deck Area2361.1 sq m
Main Spans5
Year Built1960 (reconstructed 1999)

Traffic

Avg Daily Traffic9,550 (2022)
Truck Traffic5%
Lanes On Bridge6
Lanes Under Bridge12

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016018900000000

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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