US Bridges

20th Rd. over Spring Creek

Fair

Clay County, Kansas · 2.0N of Clay Center · Structure no. 000140841803820

Built
1940
85 years old, rebuilt 1970
Condition
Fair
inspected March 2024
Type
Truss - Thru
Steel
Length
100 ft
1 main span
Daily traffic
50
2016 count
Owner
County
County Highway Agency

About this bridge

20th Rd. over Spring Creek is a steel truss - thru carrying 20th Rd. over Spring Creek in Clay County, Kansas. It was built in 1940 and reconstructed in 1970, so it is 85 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.

It carries about 50 vehicles a day, projected to reach 15 by 2042. The structure is 100 ft (30.5 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries20th Rd.
CrossesSpring Creek
Location2.0N of Clay Center
RouteCounty Highway 0
CountyClay County
StateKansas
Coordinates39.4083, -97.1325
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span96 ft (29.2 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 traffic50 (2016)
Projected traffic15 by 2042
Trucks0%
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 20th Rd. over Spring Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1970.

What condition is 20th Rd. over Spring 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 March 2024.

How much traffic does 20th Rd. over Spring Creek carry?

About 50 vehicles per day (2016 count).

How long is 20th Rd. over Spring Creek?

The structure is 100 ft (30.5 m) long with a longest span of 96 ft (29.2 m) and a deck 25 ft wide.

Who owns 20th Rd. over Spring Creek?

It is owned by the County Highway Agency.