Structure 999947000890541 · Shawnee County, KS

Urb5390 21st WB over I470 HWY Wl-el

Carries Urb5390 21st WB over I470 HWY Wl-el, 1.01 Mi SE W Jct Us75.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT255 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

255 ft end to end, longest span 70 ft: about 4 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 box-beam bridge.

Built1960rebuilt 1990
Length254.6 ft77.6 m
Daily traffic9,665counted 2023
Last inspectedJune 2024every 24 months

Location

StateKansas
CountyShawnee
Location1.01 Mi SE W Jct Us75
CarriesUrb5390 21st WB
CrossesI470 HWY Wl-el
Coordinates39.02917, -95.75417

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length254.6 ft (77.6 m)
Max Span69.9 ft (21.3 m)
Deck Width36.1 ft (11 m)
Deck Area853.6 sq m
Main Spans4
Year Built1960 (reconstructed 1990)

Traffic

Avg Daily Traffic9,665 (2023)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number999947000890541

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.

Nearby Bridges