Structure 45332400000000 · Kane County, IL

Tanner Road over Lake Run Creek

Carries Tanner Road over Lake Run Creek, 0.27 M E Of Norris.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT65 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

65 ft end to end, longest span 37 ft. 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.

Built2014rebuilt 2021
Length65.0 ft19.8 m
Daily traffic2,200counted 2023
Last inspectedApril 2023every 24 months

Location

StateIllinois
CountyKane
Location0.27 M E Of Norris
CarriesTanner Road
CrossesLake Run Creek
Coordinates41.81115, -88.40289

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length65.0 ft (19.8 m)
Max Span36.7 ft (11.2 m)
Deck Width40.0 ft (12.2 m)
Deck Area241.6 sq m
Main Spans2
Year Built2014 (reconstructed 2021)

Traffic

Avg Daily Traffic2,200 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045332400000000

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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