Structure 999947000891423 · Shawnee County, KS

Rs0617 29th ST over I-470 HWY (kta)

Carries Rs0617 29th ST over I-470 HWY (kta), 3.17 Mi NE Topeka AVE.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT219 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 6/9 · sets the ratingSubstructure 7/9

219 ft end to end, longest span 60 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 multi-beam bridge.

Built1956rebuilt 2015
Length218.5 ft66.6 m
Daily traffic8,478counted 2023
Last inspectedJune 2024every 24 months

Location

StateKansas
CountyShawnee
Location3.17 Mi NE Topeka AVE
CarriesRs0617 29th ST
CrossesI-470 HWY (kta)
Coordinates39.01500, -95.64000

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length218.5 ft (66.6 m)
Max Span60.0 ft (18.3 m)
Deck Width56.1 ft (17.1 m)
Deck Area1138.9 sq m
Main Spans4
Year Built1956 (reconstructed 2015)

Traffic

Avg Daily Traffic8,478 (2023)
Lanes On Bridge4
Lanes Under Bridge4

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 Number999947000891423

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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