US Bridges

Oak Grove Road over Trib. Marais Des Cygnes

FairPosted for load

Miami County, Kansas · 3.0W 1.1N New Lancaster · Structure no. 000611095005088

Built
1930
95 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
2 main spans
Daily traffic
31
2011 count
Owner
County
County Highway Agency

About this bridge

Oak Grove Road over Trib. Marais Des Cygnes is a steel stringer/multi-beam or girder carrying Oak Grove Road over Trib. Marais Des Cygnes in Miami County, Kansas. It was built in 1930, so it is 95 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 31 vehicles a day, projected to reach 35 by 2043. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOak Grove Road
CrossesTrib. Marais Des Cygnes
Location3.0W 1.1N New Lancaster
RouteCounty Highway 0
CountyMiami County
StateKansas
Coordinates38.48034, -94.78869
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic31 (2011)
Projected traffic35 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Oak Grove Road over Trib. Marais Des Cygnes built?

It was built in 1930, making it 95 years old in 2025.

What condition is Oak Grove Road over Trib. Marais 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 July 2023.

How much traffic does Oak Grove Road over Trib. Marais Des Cygnes carry?

About 31 vehicles per day (2011 count).

How long is Oak Grove Road over Trib. Marais Des Cygnes?

The structure is 28 ft (8.5 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns Oak Grove Road over Trib. Marais Des Cygnes?

It is owned by the County Highway Agency.