US Bridges

Diamond Rd. over Trib. N. Cottonwood Riv.

FairPosted for load

Marion County, Kansas · 3.2N 4.0W of Durham · Structure no. 000000000570080

Built
1945
80 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

Diamond Rd. over Trib. N. Cottonwood Riv. is a concrete culvert carrying Diamond Rd. over Trib. N. Cottonwood Riv. in Marion County, Kansas. It was built in 1945, so it is 80 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 40 vehicles a day, roughly 3% of them trucks, projected to reach 60 by 2044. The structure is 26 ft (7.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDiamond Rd.
CrossesTrib. N. Cottonwood Riv.
Location3.2N 4.0W of Durham
RouteCounty Highway 184
CountyMarion County
StateKansas
Coordinates38.53372, -97.29781
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15 US tons
Inventory rating15 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length26 ft (7.8 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2020)
Projected traffic60 by 2044
Trucks3%
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 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 Diamond Rd. over Trib. N. Cottonwood Riv. built?

It was built in 1945, making it 80 years old in 2025.

What condition is Diamond 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 November 2024.

How much traffic does Diamond Rd. over Trib. N. Cottonwood Riv. carry?

About 40 vehicles per day (2020 count), of which roughly 3% are trucks.

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

The structure is 26 ft (7.8 m) long with a longest span of 8 ft (2.4 m).

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

It is owned by the County Highway Agency.