US Bridges

I-470 HWY (kta) SB over Topeka Ave BNSF RR

Good

Shawnee County, Kansas · Topeka Ave / 470 (kta) · Structure no. 999947000890953

Built
1956
69 years old, rebuilt 2020
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,018 ft
11 main spans
Daily traffic
9,860
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-470 HWY (kta) SB over Topeka Ave BNSF RR is a steel continuous stringer/multi-beam or girder carrying I-470 HWY (kta) SB over Topeka Ave BNSF RR in Shawnee County, Kansas. It was built in 1956 and reconstructed in 2020, so it is 69 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,860 vehicles a day, roughly 18% of them trucks, projected to reach 12,517 by 2044. The structure is 1,018 ft (310.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-470 HWY (kta) SB
CrossesTopeka Ave BNSF RR
LocationTopeka Ave / 470 (kta)
RouteInterstate 470
CountyShawnee County
StateKansas
Coordinates38.99139, -95.68639
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.1 US tons
Inventory rating31.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20 + Mod
Structure length1,018 ft (310.3 m)
Longest span100 ft (30.5 m)
Deck width45 ft (13.7 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,860 (2023)
Projected traffic12,517 by 2044
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-470 HWY (kta) SB over Topeka Ave BNSF RR built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2020.

What condition is I-470 HWY (kta) SB over Topeka Ave BNSF RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does I-470 HWY (kta) SB over Topeka Ave BNSF RR carry?

About 9,860 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-470 HWY (kta) SB over Topeka Ave BNSF RR?

The structure is 1,018 ft (310.3 m) long with a longest span of 100 ft (30.5 m) and a deck 45 ft wide.

Who owns I-470 HWY (kta) SB over Topeka Ave BNSF RR?

It is owned by the State Toll Authority.