US Bridges

K99 HWY over I-335 HWY (kta)

Good

Lyon County, Kansas · 4.61 MI N of I-35 JCT · Structure no. 999909900560481

Built
1956
69 years old, rebuilt 2005
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
257 ft
4 main spans
Daily traffic
1,436
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 2005, 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 1,436 vehicles a day, roughly 13% of them trucks, projected to reach 1,823 by 2044. The structure is 257 ft (78.3 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesK99 HWY
CrossesI-335 HWY (kta)
Location4.61 MI N of I-35 JCT
RouteState Highway 99
CountyLyon County
StateKansas
Coordinates38.48472, -96.17083
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating38 US tons
Inventory rating22.8 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 traffic1,436 (2023)
Projected traffic1,823 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 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 2005.

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

About 1,436 vehicles per day (2023 count), of which roughly 13% 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.