US Bridges

260th Street over Trib to Willow Ck

Good

Minnehaha County, South Dakota · 3.5N & 1.4E Ellis · Structure no. 000000050164160

Built
1987
38 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
44
2023 count
Owner
County
County Highway Agency

About this bridge

260th Street over Trib to Willow Ck is a prestressed concrete tee beam carrying 260th Street over Trib to Willow Ck in Minnehaha County, South Dakota. It was built in 1987, so it is 38 years old, younger than the South Dakota average of 48.9 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 44 vehicles a day, roughly 2% of them trucks, projected to reach 51 by 2038. The structure is 52 ft (15.8 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries260th Street
CrossesTrib to Willow Ck
Location3.5N & 1.4E Ellis
RouteCounty Highway 0
Coordinates43.61636, -96.80091
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 protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2023)
Projected traffic51 by 2038
Trucks2%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$543,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 260th Street over Trib to Willow Ck built?

It was built in 1987, making it 38 years old in 2025.

What condition is 260th Street over Trib to Willow Ck 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 July 2023.

How much traffic does 260th Street over Trib to Willow Ck carry?

About 44 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is 260th Street over Trib to Willow Ck?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns 260th Street over Trib to Willow Ck?

It is owned by the County Highway Agency.