Structure 16979300000000 · Cook County, IL

I-294 SB over Up Rr

Carries I-294 SB over Up Rr, 0.4 M S US 20.

Overall conditionGood

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

How ratings work
Deck9/9 · Excellent
Superstructure9/9 · Excellent
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT172 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 7/9 · sets the rating

172 ft end to end: about 2 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.

Built1958rebuilt 2023
Length171.6 ft52.3 m
Daily traffic75,150counted 2023
Last inspectedOctober 2023every 24 months

Location

StateIllinois
CountyCook
Location0.4 M S US 20
CarriesI-294 SB
CrossesUp Rr
Coordinates41.89999, -87.92001

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length171.6 ft (52.3 m)
Max Span157.2 ft (47.9 m)
Deck Width107.0 ft (32.6 m)
Deck Area1705.0 sq m
Main Spans1
Year Built1958 (reconstructed 2023)

Traffic

Avg Daily Traffic75,150 (2023)
Truck Traffic12%
Lanes On Bridge3

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number016979300000000

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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