US Bridges

300 Rd. over N. Cottonwood River

Good

Marion County, Kansas · 1.4N 6.0W of Durham · Structure no. 000570819505060

Built
1981
44 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

300 Rd. over N. Cottonwood River is a prestressed concrete continuous tee beam carrying 300 Rd. over N. Cottonwood River in Marion County, Kansas. It was built in 1981, so it is 44 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, projected to reach 48 by 2044. The structure is 110 ft (33.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries300 Rd.
CrossesN. Cottonwood River
Location1.4N 6.0W of Durham
RouteCounty Highway 0
CountyMarion County
StateKansas
Coordinates38.50769, -97.34317
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.7 US tons
Inventory rating16.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length110 ft (33.5 m)
Longest span36 ft (11 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 traffic40 (2020)
Projected traffic48 by 2044
Trucks0%
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 300 Rd. over N. Cottonwood River built?

It was built in 1981, making it 44 years old in 2025.

What condition is 300 Rd. over N. 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 300 Rd. over N. Cottonwood River carry?

About 40 vehicles per day (2020 count).

How long is 300 Rd. over N. Cottonwood River?

The structure is 110 ft (33.5 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns 300 Rd. over N. Cottonwood River?

It is owned by the County Highway Agency.