Structure 22017400000000 · DuPage County, IL

Il 83 over Drainage Ditch

Carries Il 83 over Drainage Ditch, N Of 63rd ST.

Overall conditionGood

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

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

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.

Built199036 years old
Length26.6 ft8.1 m
Daily traffic53,900counted 2023
Last inspectedJune 2023every 48 months

Location

StateIllinois
CountyDuPage
LocationN Of 63rd ST
CarriesIl 83
CrossesDrainage Ditch
Coordinates41.77635, -87.94684

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length26.6 ft (8.1 m)
Max Span5.9 ft (1.8 m)
Deck Width111.9 ft (34.1 m)
Deck Area276.2 sq m
Main Spans2
Year Built1990

Traffic

Avg Daily Traffic53,900 (2023)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number022017400000000

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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