Structure 19490600000000 · DeKalb County, IL

University RD over S Br Kishwaukee Rv

Carries University RD over S Br Kishwaukee Rv, 1270n 500e.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

29 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 slab bridge.

Built195472 years old
Length28.9 ft8.8 m
Daily traffic950counted 2021
Last inspectedDecember 2023every 24 months

Location

StateIllinois
CountyDeKalb
Location1270n 500e
CarriesUniversity RD
CrossesS Br Kishwaukee Rv
Coordinates41.81546, -88.84769

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length28.9 ft (8.8 m)
Max Span27.2 ft (8.3 m)
Deck Width28.5 ft (8.7 m)
Deck Area76.6 sq m
Main Spans1
Year Built1954

Traffic

Avg Daily Traffic950 (2021)
Truck Traffic38%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number019490600000000

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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