US Bridges

255th ST over Skunk Ck

Good

Minnehaha County, South Dakota · 1.8W & 7S Colton · Structure no. 000000050082110

Built
2014
11 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
82 ft
2 main spans
Daily traffic
13
2023 count
Owner
County
County Highway Agency

About this bridge

255th ST over Skunk Ck is a concrete continuous slab carrying 255th ST over Skunk Ck in Minnehaha County, South Dakota. It was built in 2014, so it is 11 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 13 vehicles a day, roughly 2% of them trucks, projected to reach 15 by 2038. The structure is 82 ft (25 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries255th ST
CrossesSkunk Ck
Location1.8W & 7S Colton
RouteCounty Highway 0
Coordinates43.6888, -96.96421
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating62.2 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length82 ft (25 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (2023)
Projected traffic15 by 2038
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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$771,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 255th ST over Skunk Ck built?

It was built in 2014, making it 11 years old in 2025.

What condition is 255th ST over Skunk 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 June 2023.

How much traffic does 255th ST over Skunk Ck carry?

About 13 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is 255th ST over Skunk Ck?

The structure is 82 ft (25 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns 255th ST over Skunk Ck?

It is owned by the County Highway Agency.