Structure 999990000440484 · Jefferson County, KS

K900 Parks Route over Perry Lake (rock Creek)

Carries K900 Parks Route over Perry Lake (rock Creek), Perry Lake State Park.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT519 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

519 ft end to end, longest span 115 ft: about 7 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.

Built196759 years old
Length519.0 ft158.2 m
Daily traffic654counted 2023
Last inspectedDecember 2024every 24 months

Location

StateKansas
CountyJefferson
LocationPerry Lake State Park
CarriesK900 Parks Route
CrossesPerry Lake (rock Creek)
Coordinates39.15056, -95.48139

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length519.0 ft (158.2 m)
Max Span115.2 ft (35.1 m)
Deck Width26.9 ft (8.2 m)
Deck Area1297.2 sq m
Main Spans5
Year Built1967

Traffic

Avg Daily Traffic654 (2023)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number999990000440484

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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