US Bridges

21st RD (rs 1242) over Robidoux Creek

Fair

Marshall County, Kansas · 1.0N 0.5W of Beattie · Structure no. 000000000580760

Built
1961
64 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
214
2007 count
Owner
County
County Highway Agency

About this bridge

21st RD (rs 1242) over Robidoux Creek is a steel stringer/multi-beam or girder carrying 21st RD (rs 1242) over Robidoux Creek in Marshall County, Kansas. It was built in 1961, so it is 64 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 214 vehicles a day, roughly 11% of them trucks, projected to reach 214 by 2043. The structure is 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries21st RD (rs 1242)
CrossesRobidoux Creek
Location1.0N 0.5W of Beattie
RouteCounty Highway 1242
CountyMarshall County
StateKansas
Coordinates39.88168, -96.42656
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating20.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span46 ft (13.9 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic214 (2007)
Projected traffic214 by 2043
Trucks11%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$102,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 21st RD (rs 1242) over Robidoux Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is 21st RD (rs 1242) over Robidoux 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 July 2023.

How much traffic does 21st RD (rs 1242) over Robidoux Creek carry?

About 214 vehicles per day (2007 count), of which roughly 11% are trucks.

How long is 21st RD (rs 1242) over Robidoux Creek?

The structure is 50 ft (15.2 m) long with a longest span of 46 ft (13.9 m) and a deck 24 ft wide.

Who owns 21st RD (rs 1242) over Robidoux Creek?

It is owned by the County Highway Agency.