US Bridges

K1 HWY over Salt Fork Arkansas River

Good

Comanche County, Kansas · 7.43 MI N Okla State Line · Structure no. 999900100170141

Built
1935
90 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
77 ft
6 main spans
Daily traffic
575
2023 count
Owner
State
State Highway Agency

About this bridge

K1 HWY over Salt Fork Arkansas River is a concrete culvert carrying K1 HWY over Salt Fork Arkansas River in Comanche County, Kansas. It was built in 1935, so it is 90 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 575 vehicles a day, roughly 48% of them trucks, projected to reach 674 by 2044. The structure is 77 ft (23.5 m) long and 34 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesK1 HWY
CrossesSalt Fork Arkansas River
Location7.43 MI N Okla State Line
RouteState Highway 1
StateKansas
Coordinates37.10667, -99.325
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length77 ft (23.5 m)
Longest span12 ft (3.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic575 (2023)
Projected traffic674 by 2044
Trucks48%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 K1 HWY over Salt Fork Arkansas River built?

It was built in 1935, making it 90 years old in 2025.

What condition is K1 HWY over Salt Fork Arkansas River 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 August 2023.

How much traffic does K1 HWY over Salt Fork Arkansas River carry?

About 575 vehicles per day (2023 count), of which roughly 48% are trucks.

How long is K1 HWY over Salt Fork Arkansas River?

The structure is 77 ft (23.5 m) long with a longest span of 12 ft (3.7 m) and a deck 34 ft wide.

Who owns K1 HWY over Salt Fork Arkansas River?

It is owned by the State Highway Agency.