US Bridges

RD 502 969-502 over Marias Des Cygnes

FairPosted for load

Lyon County, Kansas · 0.5E 1.0N of Reading · Structure no. 000560969005020

Built
1963
62 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
263 ft
3 main spans
Daily traffic
30
2007 count
Owner
County
County Highway Agency

About this bridge

RD 502 969-502 over Marias Des Cygnes is a steel continuous stringer/multi-beam or girder carrying RD 502 969-502 over Marias Des Cygnes in Lyon County, Kansas. It was built in 1963, so it is 62 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. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, projected to reach 30 by 2043. The structure is 263 ft (80.3 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRD 502 969-502
CrossesMarias Des Cygnes
Location0.5E 1.0N of Reading
RouteCounty Highway 0
CountyLyon County
StateKansas
Coordinates38.53567, -95.94992
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.3 US tons
Inventory rating22.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length263 ft (80.3 m)
Longest span100 ft (30.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic30 (2007)
Projected traffic30 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 502 969-502 over Marias Des Cygnes built?

It was built in 1963, making it 62 years old in 2025.

What condition is RD 502 969-502 over Marias Des Cygnes 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 RD 502 969-502 over Marias Des Cygnes carry?

About 30 vehicles per day (2007 count).

How long is RD 502 969-502 over Marias Des Cygnes?

The structure is 263 ft (80.3 m) long with a longest span of 100 ft (30.4 m) and a deck 25 ft wide.

Who owns RD 502 969-502 over Marias Des Cygnes?

It is owned by the County Highway Agency.