US Bridges

RD 21 over Trib. to Rattlesnake Ck.

Fair

Kiowa County, Kansas · 5.0E 1.3S of Mullinville · Structure no. 000490597006343

Built
1980
45 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
70
2021 count
Owner
County
County Highway Agency

About this bridge

RD 21 over Trib. to Rattlesnake Ck. is a steel stringer/multi-beam or girder carrying RD 21 over Trib. to Rattlesnake Ck. in Kiowa County, Kansas. It was built in 1980, so it is 45 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 70 vehicles a day, roughly 5% of them trucks, projected to reach 80 by 2046. The structure is 26 ft (8 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRD 21
CrossesTrib. to Rattlesnake Ck.
Location5.0E 1.3S of Mullinville
RouteCounty Highway 0
CountyKiowa County
StateKansas
Coordinates37.56678, -99.37576
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.5 US tons
Inventory rating51.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span25 ft (7.6 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic70 (2021)
Projected traffic80 by 2046
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RD 21 over Trib. to Rattlesnake Ck. built?

It was built in 1980, making it 45 years old in 2025.

What condition is RD 21 over Trib. to Rattlesnake Ck. 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 December 2024.

How much traffic does RD 21 over Trib. to Rattlesnake Ck. carry?

About 70 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is RD 21 over Trib. to Rattlesnake Ck.?

The structure is 26 ft (8 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.

Who owns RD 21 over Trib. to Rattlesnake Ck.?

It is owned by the County Highway Agency.