US Bridges

393rd Avenue over Creek

PoorPosted for load

Beadle County, South Dakota · SW Edge of Broadland · Structure no. 000000003170097

Built
1924
101 years old
Condition
Poor
inspected September 2024
Type
Slab
Concrete Continuous
Length
45 ft
4 main spans
Daily traffic
213
2022 count
Owner
County
County Highway Agency

About this bridge

393rd Avenue over Creek is a concrete continuous slab carrying 393rd Avenue over Creek in Beadle County, South Dakota. It was built in 1924, so it is 101 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 213 vehicles a day, roughly 2% of them trucks, projected to reach 213 by 2032. The structure is 45 ft (13.7 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries393rd Avenue
CrossesCreek
LocationSW Edge of Broadland
RouteCounty Highway 0
Coordinates44.49077, -98.35677
Functional classRural Minor Collector

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.
Superstructure4 PoorAdvanced section loss, deterioration, 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 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 alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating20.2 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 width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic213 (2022)
Projected traffic213 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 proposedNone recorded
Estimated improvement cost$1.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 393rd Avenue over Creek built?

It was built in 1924, making it 101 years old in 2025.

What condition is 393rd Avenue over 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 393rd Avenue over Creek carry?

About 213 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 393rd Avenue over Creek?

The structure is 45 ft (13.7 m) long with a longest span of 11 ft (3.4 m) and a deck 22 ft wide.

Who owns 393rd Avenue over Creek?

It is owned by the County Highway Agency.