US Bridges

K99 HWY over I-335 HWY (kta)

Fair

Lyon County, Kansas · K-99 & Kta N JCT · Structure no. 999909900560511

Built
1956
69 years old, rebuilt 2012
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
257 ft
4 main spans
Daily traffic
682
2023 count
Owner
State
State Highway Agency

About this bridge

K99 HWY over I-335 HWY (kta) is a steel continuous stringer/multi-beam or girder carrying K99 HWY over I-335 HWY (kta) in Lyon County, Kansas. It was built in 1956 and reconstructed in 2012, 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 682 vehicles a day, roughly 25% of them trucks, projected to reach 724 by 2044. The structure is 257 ft (78.3 m) long and 33 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesK99 HWY
CrossesI-335 HWY (kta)
LocationK-99 & Kta N JCT
RouteState Highway 99
CountyLyon County
StateKansas
Coordinates38.57194, -96.0975
Functional classRural Minor Arterial

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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckNot applicable
Main spans4
Design loadH 20
Structure length257 ft (78.3 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic682 (2023)
Projected traffic724 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 K99 HWY over I-335 HWY (kta) built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2012.

What condition is K99 HWY over I-335 HWY (kta) 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 K99 HWY over I-335 HWY (kta) carry?

About 682 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is K99 HWY over I-335 HWY (kta)?

The structure is 257 ft (78.3 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns K99 HWY over I-335 HWY (kta)?

It is owned by the State Highway Agency.