Structure 16276200000000 · Cook County, IL

I-90 over Poplar Creek

Carries I-90 over Poplar Creek, 0.3 M E Il-72.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 27 ft across with 2 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built1958rebuilt 2015
Length26.6 ft8.1 m
Daily traffic146,700counted 2023
Last inspectedJuly 2023every 24 months

Location

StateIllinois
CountyCook
Location0.3 M E Il-72
CarriesI-90
CrossesPoplar Creek
Coordinates42.06651, -88.15493

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length26.6 ft (8.1 m)
Max Span11.8 ft (3.6 m)
Deck Area296.5 sq m
Main Spans2
Year Built1958 (reconstructed 2015)

Traffic

Avg Daily Traffic146,700 (2023)
Truck Traffic7%
Lanes On Bridge6

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number016276200000000

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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