Structure 16985700000000 · Cook County, IL

I-294 NB over Rr & Midlothian Cr.

Carries I-294 NB over Rr & Midlothian Cr., 0.8 M NE Ill 83 P3.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT321 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

321 ft end to end, longest span 102 ft: about 4 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.

Built195868 years old
Length320.9 ft97.8 m
Daily traffic71,700counted 2023
Last inspectedMay 2024every 24 months

Location

StateIllinois
CountyCook
Location0.8 M NE Ill 83 P3
CarriesI-294 NB
CrossesRr & Midlothian Cr.
Coordinates41.63266, -87.70344

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length320.9 ft (97.8 m)
Max Span102.0 ft (31.1 m)
Deck Width61.0 ft (18.6 m)
Deck Area1819.1 sq m
Main Spans4
Year Built1958

Traffic

Avg Daily Traffic71,700 (2023)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number016985700000000

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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