Structure 22693000000000 · DuPage County, IL

Ardmore AVE over Chicago Central & P

Carries Ardmore AVE over Chicago Central & P, 0.7 M N ST Charles R.

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
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 8/9

118 ft end to end, longest span 39 ft. 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 or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built1978rebuilt 2012
Length118.1 ft36 m
Daily traffic7,100counted 2024
Last inspectedOctober 2024every 24 months

Location

StateIllinois
CountyDuPage
Location0.7 M N ST Charles R
CarriesArdmore AVE
CrossesChicago Central & P
Coordinates41.90282, -87.97871

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length118.1 ft (36 m)
Max Span39.0 ft (11.9 m)
Deck Width62.3 ft (19 m)
Deck Area684 sq m
Main Spans3
Year Built1978 (reconstructed 2012)

Traffic

Avg Daily Traffic7,100 (2024)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number022693000000000

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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