Structure 16761000000000 · Cook County, IL

Prater AVE over Addison CR

Carries Prater AVE over Addison CR, 0.1 M N North P9.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

56 ft end to end. 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.

Built1965rebuilt 2020
Length56.1 ft17.1 m
Daily traffic500counted 2022
Last inspectedOctober 2022every 48 months

Location

StateIllinois
CountyCook
Location0.1 M N North P9
CarriesPrater AVE
CrossesAddison CR
Coordinates41.90847, -87.89948

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length56.1 ft (17.1 m)
Max Span51.8 ft (15.8 m)
Deck Width44.0 ft (13.4 m)
Deck Area229.1 sq m
Main Spans1
Year Built1965 (reconstructed 2020)

Traffic

Avg Daily Traffic500 (2022)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number016761000000000

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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