US Bridges

I-35 HWY NB (kta) over US-50 Highway

Fair

Lyon County, Kansas · JCT I-35 / US-50 · Structure no. 999903500561133

Built
1956
69 years old, rebuilt 1986
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
190 ft
4 main spans
Daily traffic
9,014
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-35 HWY NB (kta) over US-50 Highway is a steel continuous stringer/multi-beam or girder carrying I-35 HWY NB (kta) over US-50 Highway in Lyon County, Kansas. It was built in 1956 and reconstructed in 1986, 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 9,014 vehicles a day, roughly 28% of them trucks, projected to reach 11,443 by 2044. The structure is 190 ft (57.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-35 HWY NB (kta)
CrossesUS-50 Highway
LocationJCT I-35 / US-50
RouteInterstate 35
CountyLyon County
StateKansas
Coordinates38.41222, -96.23944
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.7 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length190 ft (57.9 m)
Longest span52 ft (15.8 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,014 (2023)
Projected traffic11,443 by 2044
Trucks28%
Lanes on structure3
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-35 HWY NB (kta) over US-50 Highway built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1986.

What condition is I-35 HWY NB (kta) over US-50 Highway 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-35 HWY NB (kta) over US-50 Highway carry?

About 9,014 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is I-35 HWY NB (kta) over US-50 Highway?

The structure is 190 ft (57.9 m) long with a longest span of 52 ft (15.8 m) and a deck 47 ft wide.

Who owns I-35 HWY NB (kta) over US-50 Highway?

It is owned by the State Toll Authority.