US Bridges

121st RD over Durham Creek

FairPosted for load

Cowley County, Kansas · 4.0E 1.6N of Rock · Structure no. 000180865006489

Built
1930
95 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete
Length
55 ft
2 main spans
Daily traffic
15
2018 count
Owner
County
County Highway Agency

About this bridge

121st RD over Durham Creek is a concrete tee beam carrying 121st RD over Durham Creek in Cowley County, Kansas. It was built in 1930, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, roughly 5% of them trucks, projected to reach 20 by 2044. The structure is 55 ft (16.8 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries121st RD
CrossesDurham Creek
Location4.0E 1.6N of Rock
RouteCounty Highway 0
CountyCowley County
StateKansas
Coordinates37.46376, -96.93451
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15 US tons
Inventory rating15 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length55 ft (16.8 m)
Longest span27 ft (8.2 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic15 (2018)
Projected traffic20 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 121st RD over Durham Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is 121st RD over Durham Creek 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 121st RD over Durham Creek carry?

About 15 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is 121st RD over Durham Creek?

The structure is 55 ft (16.8 m) long with a longest span of 27 ft (8.2 m) and a deck 23 ft wide.

Who owns 121st RD over Durham Creek?

It is owned by the County Highway Agency.