Structure 49012500000000 · Lake County, IL

Il 120 WB over Greenleaf AVE

Carries Il 120 WB over Greenleaf AVE, 1.1 M E Of I-94.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT211 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 8/9

211 ft end to end, longest span 67 ft: about 3 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.

Built1977rebuilt 2018
Length210.6 ft64.2 m
Daily traffic19,300counted 2023
Last inspectedAugust 2021every 48 months

Location

StateIllinois
CountyLake
Location1.1 M E Of I-94
CarriesIl 120 WB
CrossesGreenleaf AVE
Coordinates42.34718, -87.90153

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length210.6 ft (64.2 m)
Max Span67.3 ft (20.5 m)
Deck Width54.8 ft (16.7 m)
Deck Area1072.1 sq m
Main Spans4
Year Built1977 (reconstructed 2018)

Traffic

Avg Daily Traffic19,300 (2023)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge8

Inspection & Ownership

Last InspectionAugust 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number049012500000000

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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