US Bridges

Alfalfa Rd. over Cottonwood River

Good

Marion County, Kansas · 2.1E 0.6S of Florence · Structure no. 000570871005427

Built
2017
8 years old
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
242 ft
3 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Alfalfa Rd. over Cottonwood River is a prestressed concrete continuous stringer/multi-beam or girder carrying Alfalfa Rd. over Cottonwood River in Marion County, Kansas. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 60 by 2045. The structure is 242 ft (73.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesAlfalfa Rd.
CrossesCottonwood River
Location2.1E 0.6S of Florence
RouteCounty Highway 275
CountyMarion County
StateKansas
Coordinates38.23581, -96.87714
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.1 US tons
Inventory rating56.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length242 ft (73.9 m)
Longest span90 ft (27.4 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2020)
Projected traffic60 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Alfalfa Rd. over Cottonwood River built?

It was built in 2017, making it 8 years old in 2025.

What condition is Alfalfa Rd. over 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 February 2025.

How much traffic does Alfalfa Rd. over Cottonwood River carry?

About 50 vehicles per day (2020 count).

How long is Alfalfa Rd. over Cottonwood River?

The structure is 242 ft (73.9 m) long with a longest span of 90 ft (27.4 m) and a deck 28 ft wide.

Who owns Alfalfa Rd. over Cottonwood River?

It is owned by the County Highway Agency.