Structure 49001600000000 · Lake County, IL

Washington ST over US 41

Carries Washington ST over US 41, 1 M S Of Il 132.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT206 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

206 ft end to end, longest span 64 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.

Built1961rebuilt 1996
Length206.0 ft62.8 m
Daily traffic16,400counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateIllinois
CountyLake
Location1 M S Of Il 132
CarriesWashington ST
CrossesUS 41
Coordinates42.35959, -87.89597

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length206.0 ft (62.8 m)
Max Span64.0 ft (19.5 m)
Deck Width65.9 ft (20.1 m)
Deck Area1262.3 sq m
Main Spans4
Year Built1961 (reconstructed 1996)

Traffic

Avg Daily Traffic16,400 (2023)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge5

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number049001600000000

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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