Structure 16047800000000 · Cook County, IL

Roosevelt RD over I- 90 94 Dan Ryan

Carries Roosevelt RD over I- 90 94 Dan Ryan, 0.6 M S I-290.

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 FT191 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

191 ft end to end, longest span 82 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.

Built1961rebuilt 1986
Length190.9 ft58.2 m
Daily traffic24,200counted 2023
Last inspectedApril 2023every 24 months

Location

StateIllinois
CountyCook
Location0.6 M S I-290
CarriesRoosevelt RD
CrossesI- 90 94 Dan Ryan
Coordinates41.86713, -87.64473

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length190.9 ft (58.2 m)
Max Span81.7 ft (24.9 m)
Deck Width86.9 ft (26.5 m)
Deck Area1542.3 sq m
Main Spans2
Year Built1961 (reconstructed 1986)

Traffic

Avg Daily Traffic24,200 (2023)
Truck Traffic4%
Lanes On Bridge6
Lanes Under Bridge10

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016047800000000

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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