Structure 49017100000000 · Lake County, IL

Il 59 over Rr - Metra & Rollins

Carries Il 59 over Rr - Metra & Rollins, Il 59 & Rollins RD.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT372 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

372 ft end to end, longest span 90 ft: about 5 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.

Built199531 years old
Length372.4 ft113.5 m
Daily traffic10,400counted 2023
Last inspectedMarch 2024every 24 months

Location

StateIllinois
CountyLake
LocationIl 59 & Rollins RD
CarriesIl 59
CrossesRr - Metra & Rollins
Coordinates42.38561, -88.16058

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length372.4 ft (113.5 m)
Max Span89.9 ft (27.4 m)
Deck Width59.1 ft (18 m)
Deck Area2,043 sq m
Main Spans4
Year Built1995

Traffic

Avg Daily Traffic10,400 (2023)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number049017100000000

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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