US Bridges

I-470 HWY (kta) SB over 37th Street

Fair

Shawnee County, Kansas · 1.61 MI NE Topeka Ave · Structure no. 999947000891383

Built
1956
69 years old, rebuilt 1984
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
9,860
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-470 HWY (kta) SB over 37th Street is a steel continuous stringer/multi-beam or girder carrying I-470 HWY (kta) SB over 37th Street in Shawnee County, Kansas. It was built in 1956 and reconstructed in 1984, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,860 vehicles a day, roughly 18% of them trucks, projected to reach 12,517 by 2044. The structure is 158 ft (48.3 m) long and 34 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
Crosses37th Street
Location1.61 MI NE Topeka Ave
RouteInterstate 470
CountyShawnee County
StateKansas
Coordinates39.00056, -95.66
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length158 ft (48.3 m)
Longest span63 ft (19.2 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 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
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 37th Street built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1984.

What condition is I-470 HWY (kta) SB over 37th Street in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does I-470 HWY (kta) SB over 37th Street carry?

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

How long is I-470 HWY (kta) SB over 37th Street?

The structure is 158 ft (48.3 m) long with a longest span of 63 ft (19.2 m) and a deck 34 ft wide.

Who owns I-470 HWY (kta) SB over 37th Street?

It is owned by the State Toll Authority.