US Bridges

274th Street over Beaver Creek

PoorPosted for load

Lincoln County, South Dakota · 4N & 0.1W of Lennox · Structure no. 000000042019060

Built
1935
90 years old
Condition
Poor
inspected May 2024
Type
Slab
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
67
2022 count
Owner
County
County Highway Agency

About this bridge

274th Street over Beaver Creek is a concrete continuous slab carrying 274th Street over Beaver Creek in Lincoln County, South Dakota. It was built in 1935, so it is 90 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 4 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 67 vehicles a day, roughly 2% of them trucks, projected to reach 67 by 2032. The structure is 31 ft (9.5 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries274th Street
CrossesBeaver Creek
Location4N & 0.1W of Lennox
RouteCounty Highway 0
Coordinates43.41759, -96.88689
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating27 US tons
Inventory rating20.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length31 ft (9.5 m)
Longest span15 ft (4.5 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67 (2022)
Projected traffic67 by 2032
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$1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 274th Street over Beaver Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is 274th Street over Beaver Creek 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 May 2024.

How much traffic does 274th Street over Beaver Creek carry?

About 67 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 274th Street over Beaver Creek?

The structure is 31 ft (9.5 m) long with a longest span of 15 ft (4.5 m) and a deck 19 ft wide.

Who owns 274th Street over Beaver Creek?

It is owned by the County Highway Agency.