Structure 999903500160131 · Coffey County, KS

I35 HWY NB over US 75 HWY

Carries I35 HWY NB over US 75 HWY, 12.32 Mi E Lyon Coln NB.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT223 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

223 ft end to end, longest span 65 ft: about 3 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 slab bridge.

Built197353 years old
Length222.8 ft67.9 m
Daily traffic6,750counted 2023
Last inspectedJanuary 2025every 24 months

Location

StateKansas
CountyCoffey
Location12.32 Mi E Lyon Coln NB
CarriesI35 HWY NB
CrossesUS 75 HWY
Coordinates38.42889, -95.72833

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length222.8 ft (67.9 m)
Max Span65.0 ft (19.8 m)
Deck Width42.0 ft (12.8 m)
Deck Area869.1 sq m
Main Spans4
Year Built1973

Traffic

Avg Daily Traffic6,750 (2023)
Truck Traffic30%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number999903500160131

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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