US Bridges

SW 20 RD over Plum Creek

FairPosted for load

Harper County, Kansas · 2.0S 8.5W of Anthony · Structure no. 000390727106960

Built
1950
75 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

SW 20 RD over Plum Creek is a concrete continuous slab carrying SW 20 RD over Plum Creek in Harper County, Kansas. It was built in 1950, so it is 75 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 5 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 10 vehicles a day, roughly 2% of them trucks, projected to reach 10 by 2043. The structure is 30 ft (9.2 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSW 20 RD
CrossesPlum Creek
Location2.0S 8.5W of Anthony
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.12303, -98.18219
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16 US tons
Inventory rating16 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9.2 m)
Longest span14 ft (4.2 m)
Deck width20 ft (6 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 20 RD over Plum Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is SW 20 RD over Plum 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 February 2023.

How much traffic does SW 20 RD over Plum Creek carry?

About 10 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is SW 20 RD over Plum Creek?

The structure is 30 ft (9.2 m) long with a longest span of 14 ft (4.2 m) and a deck 20 ft wide.

Who owns SW 20 RD over Plum Creek?

It is owned by the County Highway Agency.