US Bridges

384th Avenue over Sand Creek

Poor

Beadle County, South Dakota · 5.5W & 2.7S of Virgil · Structure no. 000000003080262

Built
1928
97 years old
Condition
Poor
inspected September 2024
Type
Slab
Concrete Continuous
Length
79 ft
6 main spans
Daily traffic
56
2022 count
Owner
County
County Highway Agency

About this bridge

384th Avenue over Sand Creek is a concrete continuous slab carrying 384th Avenue over Sand Creek in Beadle County, South Dakota. It was built in 1928, so it is 97 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.

It carries about 56 vehicles a day, roughly 2% of them trucks, projected to reach 56 by 2032. The structure is 79 ft (24.1 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries384th Avenue
CrossesSand Creek
Location5.5W & 2.7S of Virgil
Coordinates44.25091, -98.53877
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length79 ft (24.1 m)
Longest span13 ft (4 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2022)
Projected traffic56 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost$1.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 384th Avenue over Sand Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is 384th Avenue over Sand 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 September 2024.

How much traffic does 384th Avenue over Sand Creek carry?

About 56 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 384th Avenue over Sand Creek?

The structure is 79 ft (24.1 m) long with a longest span of 13 ft (4 m) and a deck 22 ft wide.

Who owns 384th Avenue over Sand Creek?

It is owned by the County Highway Agency.