Structure 22981500000000 · DuPage County, IL

I-88 over Prairie Path

Carries I-88 over Prairie Path, 0.6 M W Of Ill 59.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 31 ft across. 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.

Built20215 years old
Length31.5 ft9.6 m
Daily traffic110,400counted 2023
Last inspectedAugust 2023every 24 months

Location

StateIllinois
CountyDuPage
Location0.6 M W Of Ill 59
CarriesI-88
CrossesPrairie Path
Coordinates41.80244, -88.21764

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length31.5 ft (9.6 m)
Max Span31.5 ft (9.6 m)
Deck Area195.8 sq m
Main Spans1
Year Built2021

Traffic

Avg Daily Traffic110,400 (2023)
Truck Traffic12%
Lanes On Bridge6

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number022981500000000

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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