US Bridges

Diamond Rd. over North Cottonwood River

Good

Marion County, Kansas · 3.5W 1.3N of Durham · Structure no. 000000000570070

Built
2004
21 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

Diamond Rd. over North Cottonwood River is a concrete continuous slab carrying Diamond Rd. over North Cottonwood River in Marion County, Kansas. It was built in 2004, so it is 21 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2044. The structure is 134 ft (40.9 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDiamond Rd.
CrossesNorth Cottonwood River
Location3.5W 1.3N of Durham
RouteCounty Highway 184
CountyMarion County
StateKansas
Coordinates38.51024, -97.29806
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.2 US tons
Inventory rating54.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length134 ft (40.9 m)
Longest span52 ft (16 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2020)
Projected traffic60 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 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 North Cottonwood River built?

It was built in 2004, making it 21 years old in 2025.

What condition is Diamond Rd. over North Cottonwood River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Diamond Rd. over North Cottonwood River carry?

About 40 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Diamond Rd. over North Cottonwood River?

The structure is 134 ft (40.9 m) long with a longest span of 52 ft (16 m) and a deck 30 ft wide.

Who owns Diamond Rd. over North Cottonwood River?

It is owned by the County Highway Agency.