US Bridges

US014 over Cottonwood Ck

Fair

Jackson County, South Dakota · 5.3 E Pennington CO Line · Structure no. 000000036112021

Built
1955
70 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
132 ft
3 main spans
Daily traffic
980
2024 count
Owner
State
State Highway Agency

About this bridge

US014 over Cottonwood Ck is a steel stringer/multi-beam or girder carrying US014 over Cottonwood Ck in Jackson County, South Dakota. It was built in 1955, so it is 70 years old, older than the South Dakota average of 48.9 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 980 vehicles a day, roughly 15% of them trucks, projected to reach 1,413 by 2044. The structure is 132 ft (40.1 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesUS014
CrossesCottonwood Ck
Location5.3 E Pennington CO Line
RouteU.S. Route 14
CountyJackson County
StateSouth Dakota
Coordinates43.96411, -101.91403
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.1 US tons
Inventory rating43.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length132 ft (40.1 m)
Longest span53 ft (16.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic980 (2024)
Projected traffic1,413 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US014 over Cottonwood Ck built?

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

What condition is US014 over Cottonwood Ck 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 February 2023.

How much traffic does US014 over Cottonwood Ck carry?

About 980 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is US014 over Cottonwood Ck?

The structure is 132 ft (40.1 m) long with a longest span of 53 ft (16.1 m) and a deck 32 ft wide.

Who owns US014 over Cottonwood Ck?

It is owned by the State Highway Agency.