Structure 16977200000000 · Cook County, IL

I-294 NB over Des Plaines Riv RD

Carries I-294 NB over Des Plaines Riv RD, 1.2 M N Ill 72 P11.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT186 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

186 ft end to end, longest span 86 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.

Built195868 years old
Length186.0 ft56.7 m
Daily traffic92,600counted 2023
Last inspectedApril 2023every 24 months

Location

StateIllinois
CountyCook
Location1.2 M N Ill 72 P11
CarriesI-294 NB
CrossesDes Plaines Riv RD
Coordinates42.00861, -87.86862

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length186.0 ft (56.7 m)
Max Span86.0 ft (26.2 m)
Deck Width75.1 ft (22.9 m)
Deck Area1298.4 sq m
Main Spans2
Year Built1958

Traffic

Avg Daily Traffic92,600 (2023)
Truck Traffic11%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016977200000000

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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