Structure 16614400000000 · Cook County, IL

Stetson AVE over Lower Stetson

Carries Stetson AVE over Lower Stetson, 180 E & 300n To 340n.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT468 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

468 ft end to end, longest span 66 ft: about 6 semi-trucks nose to tail. 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 multi-beam bridge.

Built197452 years old
Length467.5 ft142.5 m
Daily traffic25counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountyCook
Location180 E & 300n To 340n
CarriesStetson AVE
CrossesLower Stetson
Coordinates41.88776, -87.62244

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length467.5 ft (142.5 m)
Max Span65.9 ft (20.1 m)
Deck Width74.1 ft (22.6 m)
Deck Area3220.5 sq m
Main Spans10
Year Built1974

Traffic

Avg Daily Traffic25 (2020)
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016614400000000

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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