US Bridges

Merdian Rd. over Trib. N. Cottonwood Riv.

Fair

Marion County, Kansas · 2.8S 7.6W of Durham · Structure no. 000570817005146

Built
1955
70 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
34 ft
3 main spans
Daily traffic
45
2020 count
Owner
County
County Highway Agency

About this bridge

Merdian Rd. over Trib. N. Cottonwood Riv. is a steel continuous stringer/multi-beam or girder carrying Merdian Rd. over Trib. N. Cottonwood Riv. in Marion County, Kansas. It was built in 1955, so it is 70 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 45 vehicles a day, roughly 5% of them trucks, projected to reach 54 by 2044. The structure is 34 ft (10.3 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMerdian Rd.
CrossesTrib. N. Cottonwood Riv.
Location2.8S 7.6W of Durham
RouteCounty Highway 0
CountyMarion County
StateKansas
Coordinates38.44181, -97.37189
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.
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating57.7 US tons
Inventory rating34.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length34 ft (10.3 m)
Longest span23 ft (7.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic45 (2020)
Projected traffic54 by 2044
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 Merdian Rd. over Trib. N. Cottonwood Riv. built?

It was built in 1955, making it 70 years old in 2025.

What condition is Merdian Rd. over Trib. N. Cottonwood Riv. 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 Merdian Rd. over Trib. N. Cottonwood Riv. carry?

About 45 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Merdian Rd. over Trib. N. Cottonwood Riv.?

The structure is 34 ft (10.3 m) long with a longest span of 23 ft (7.1 m) and a deck 26 ft wide.

Who owns Merdian Rd. over Trib. N. Cottonwood Riv.?

It is owned by the County Highway Agency.