Structure 19500000000000 · DeKalb County, IL

Keslinger RD over N Br Kishwaukee Rv

Carries Keslinger RD over N Br Kishwaukee Rv, 1700n 640e.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

37 ft end to end. 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 channel-beam bridge.

Built197155 years old
Length37.1 ft11.3 m
Daily traffic50counted 2021
Last inspectedJanuary 2024every 24 months

Location

StateIllinois
CountyDeKalb
Location1700n 640e
CarriesKeslinger RD
CrossesN Br Kishwaukee Rv
Coordinates41.87806, -88.82021

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length37.1 ft (11.3 m)
Max Span35.4 ft (10.8 m)
Deck Width26.2 ft (8 m)
Deck Area90.4 sq m
Main Spans1
Year Built1971

Traffic

Avg Daily Traffic50 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number019500000000000

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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