US Bridges

NW 20 RD over Sandy Creek

FairPosted for load

Harper County, Kansas · 1.0N 0.8E of Crisfield · Structure no. 000390713306880

Built
1956
69 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
50 ft
3 main spans
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

NW 20 RD over Sandy Creek is a concrete slab carrying NW 20 RD over Sandy Creek in Harper County, Kansas. It was built in 1956, so it is 69 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 10% of them trucks, projected to reach 10 by 2043. The structure is 50 ft (15.3 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 20 RD
CrossesSandy Creek
Location1.0N 0.8E of Crisfield
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.18167, -98.30767
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length50 ft (15.3 m)
Longest span16 ft (4.9 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 by 2043
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$470,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 20 RD over Sandy Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is NW 20 RD over Sandy 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 NW 20 RD over Sandy Creek carry?

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

How long is NW 20 RD over Sandy Creek?

The structure is 50 ft (15.3 m) long with a longest span of 16 ft (4.9 m) and a deck 18 ft wide.

Who owns NW 20 RD over Sandy Creek?

It is owned by the County Highway Agency.