US Bridges

NE 20 RD over Rock Creek

Fair

Harper County, Kansas · 2.6E 2.0N of Anthony · Structure no. 000390749106880

Built
2007
18 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

NE 20 RD over Rock Creek is a steel stringer/multi-beam or girder carrying NE 20 RD over Rock Creek in Harper County, Kansas. It was built in 2007, so it is 18 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 6 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 10 vehicles a day, roughly 1% of them trucks, projected to reach 10 by 2043. The structure is 35 ft (10.7 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNE 20 RD
CrossesRock Creek
Location2.6E 2.0N of Anthony
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.18164, -97.98392
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating33.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 by 2043
Trucks1%
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$47,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NE 20 RD over Rock Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is NE 20 RD over Rock 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 June 2023.

How much traffic does NE 20 RD over Rock Creek carry?

About 10 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is NE 20 RD over Rock Creek?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 25 ft wide.

Who owns NE 20 RD over Rock Creek?

It is owned by the County Highway Agency.