US Bridges

312th RD over Trib. to Arkansas River

Fair

Cowley County, Kansas · 1.0S.E. Arkansas City · Structure no. 000180855807087

Built
1989
36 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
25
2018 count
Owner
County
County Highway Agency

About this bridge

312th RD over Trib. to Arkansas River is a steel stringer/multi-beam or girder carrying 312th RD over Trib. to Arkansas River in Cowley County, Kansas. It was built in 1989, so it is 36 years old, younger 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 5 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 25 vehicles a day, roughly 5% of them trucks, projected to reach 35 by 2044. The structure is 26 ft (8 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
Carries312th RD
CrossesTrib. to Arkansas River
Location1.0S.E. Arkansas City
RouteCounty Highway 0
CountyCowley County
StateKansas
Coordinates37.03261, -97.00725
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.3 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span25 ft (7.7 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25 (2018)
Projected traffic35 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 312th RD over Trib. to Arkansas River built?

It was built in 1989, making it 36 years old in 2025.

What condition is 312th RD over Trib. to Arkansas River 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 January 2024.

How much traffic does 312th RD over Trib. to Arkansas River carry?

About 25 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is 312th RD over Trib. to Arkansas River?

The structure is 26 ft (8 m) long with a longest span of 25 ft (7.7 m) and a deck 20 ft wide.

Who owns 312th RD over Trib. to Arkansas River?

It is owned by the County Highway Agency.