Structure 16306200000000 · Cook County, IL

Beckwith RD over N Br Chicago River

Carries Beckwith RD over N Br Chicago River, 0.7 M W Harms P13.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT132 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

132 ft end to end, longest span 53 ft. Lengths and the semi-truck 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 tee-beam bridge.

Built195175 years old
Length131.9 ft40.2 m
Daily traffic5,800counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountyCook
Location0.7 M W Harms P13
CarriesBeckwith RD
CrossesN Br Chicago River
Coordinates42.05062, -87.78107

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length131.9 ft (40.2 m)
Max Span53.1 ft (16.2 m)
Deck Width62.7 ft (19.1 m)
Deck Area767.8 sq m
Main Spans3
Year Built1951

Traffic

Avg Daily Traffic5,800 (2022)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number016306200000000

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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