Structure 49001100000000 · Lake County, IL

Half Day RD over E Br Skokie Ditch

Carries Half Day RD over E Br Skokie Ditch, 0.20 M E Of US 41.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT85 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

85 ft end to end, longest span 42 ft. 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.

Built1968rebuilt 2007
Length85.0 ft25.9 m
Daily traffic9,450counted 2023
Last inspectedJune 2023every 24 months

Location

StateIllinois
CountyLake
Location0.20 M E Of US 41
CarriesHalf Day RD
CrossesE Br Skokie Ditch
Coordinates42.19982, -87.82687

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length85.0 ft (25.9 m)
Max Span42.0 ft (12.8 m)
Deck Width49.9 ft (15.2 m)
Deck Area393.7 sq m
Main Spans2
Year Built1968 (reconstructed 2007)

Traffic

Avg Daily Traffic9,450 (2023)
Truck Traffic3%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number049001100000000

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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