Structure 999902400750011 · Pottawatomie County, KS

Us24 HWY WB over Big Blue River

Carries Us24 HWY WB over Big Blue River, 1.35 Mi E Riley Coln WB.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT420 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

420 ft end to end, longest span 160 ft: about 6 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.

Built1960rebuilt 1991
Length419.6 ft127.9 m
Daily traffic12,937counted 2023
Last inspectedMay 2023every 24 months

Location

StateKansas
CountyPottawatomie
Location1.35 Mi E Riley Coln WB
CarriesUs24 HWY WB
CrossesBig Blue River
Coordinates39.19250, -96.53750

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length419.6 ft (127.9 m)
Max Span160.1 ft (48.8 m)
Deck Width42.0 ft (12.8 m)
Deck Area1637.1 sq m
Main Spans3
Year Built1960 (reconstructed 1991)

Traffic

Avg Daily Traffic12,937 (2023)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number999902400750011

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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