US Bridges

I-335 HWY (kta) SB over Allen Creek

Good

Lyon County, Kansas · 3.41 MI NE US-50 · Structure no. 999933500560863

Built
1956
69 years old, rebuilt 2020
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
4 main spans
Daily traffic
5,825
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-335 HWY (kta) SB over Allen Creek is a steel continuous stringer/multi-beam or girder carrying I-335 HWY (kta) SB over Allen Creek in Lyon 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 5,825 vehicles a day, roughly 27% of them trucks, projected to reach 8,322 by 2044. The structure is 290 ft (88.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-335 HWY (kta) SB
CrossesAllen Creek
Location3.41 MI NE US-50
RouteInterstate 335
CountyLyon County
StateKansas
Coordinates38.45389, -96.19861
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating34.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length290 ft (88.4 m)
Longest span80 ft (24.4 m)
Deck width45 ft (13.7 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,825 (2023)
Projected traffic8,322 by 2044
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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-335 HWY (kta) SB over Allen Creek built?

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

What condition is I-335 HWY (kta) SB over Allen Creek 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-335 HWY (kta) SB over Allen Creek carry?

About 5,825 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is I-335 HWY (kta) SB over Allen Creek?

The structure is 290 ft (88.4 m) long with a longest span of 80 ft (24.4 m) and a deck 45 ft wide.

Who owns I-335 HWY (kta) SB over Allen Creek?

It is owned by the State Toll Authority.