Structure 999947000891403 · Shawnee County, KS

I-470 HWY (kta) SB over California Ave.

Carries I-470 HWY (kta) SB over California Ave., 2.25 Mi NE Topeka AVE.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT151 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

151 ft end to end, longest span 61 ft: about 2 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.

Built1956rebuilt 1985
Length150.6 ft45.9 m
Daily traffic9,860counted 2023
Last inspectedJune 2024every 24 months

Location

StateKansas
CountyShawnee
Location2.25 Mi NE Topeka AVE
CarriesI-470 HWY (kta) SB
CrossesCalifornia Ave.
Coordinates39.00722, -95.65167

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length150.6 ft (45.9 m)
Max Span61.0 ft (18.6 m)
Deck Width34.4 ft (10.5 m)
Deck Area481.9 sq m
Main Spans3
Year Built1956 (reconstructed 1985)

Traffic

Avg Daily Traffic9,860 (2023)
Truck Traffic18%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number999947000891403

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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