Structure 49015000000000 · Lake County, IL

Belvidere ST over C&nw Rr& L.f.f-way.

Carries Belvidere ST over C&nw Rr& L.f.f-way., Just E O Sheridan RD.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure6/9 · Satisfactory
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT158 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 6/9Substructure 5/9

158 ft end to end, longest span 82 ft: 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.

Built196660 years old
Length157.8 ft48.1 m
Daily traffic900counted 2023
Last inspectedOctober 2023every 24 months

Location

StateIllinois
CountyLake
LocationJust E O Sheridan RD
CarriesBelvidere ST
CrossesC&nw Rr& L.f.f-way.
Coordinates42.35511, -87.82922

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length157.8 ft (48.1 m)
Max Span82.0 ft (25 m)
Deck Width65.9 ft (20.1 m)
Deck Area966.8 sq m
Main Spans2
Year Built1966

Traffic

Avg Daily Traffic900 (2023)
Truck Traffic17%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number049015000000000

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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