US Bridges

277 Street over Dog Ear Ck

PoorPosted for load

Tripp County, South Dakota · 1.1W & 1N Winner · Structure no. 000000062189270

Built
1930
95 years old
Condition
Poor
inspected July 2024
Type
Slab
Concrete Continuous
Length
45 ft
4 main spans
Daily traffic
55
2022 count
Owner
County
County Highway Agency

About this bridge

277 Street over Dog Ear Ck is a concrete continuous slab carrying 277 Street over Dog Ear Ck in Tripp County, South Dakota. It was built in 1930, so it is 95 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 55 vehicles a day, roughly 2% of them trucks, projected to reach 55 by 2032. The structure is 45 ft (13.7 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries277 Street
CrossesDog Ear Ck
Location1.1W & 1N Winner
RouteCounty Highway 0
Coordinates43.38637, -99.87235
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating3 US tons
Inventory rating3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span11 ft (3.4 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2022)
Projected traffic55 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$32,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 277 Street over Dog Ear Ck built?

It was built in 1930, making it 95 years old in 2025.

What condition is 277 Street over Dog Ear Ck in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does 277 Street over Dog Ear Ck carry?

About 55 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 277 Street over Dog Ear Ck?

The structure is 45 ft (13.7 m) long with a longest span of 11 ft (3.4 m) and a deck 20 ft wide.

Who owns 277 Street over Dog Ear Ck?

It is owned by the County Highway Agency.