US Bridges

383rd Avenue over Cain Creek

PoorPosted for load

Beadle County, South Dakota · 4.5N & 4.0W of Wolsey · Structure no. 000000003070104

Built
1924
101 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
3 main spans
Daily traffic
56
2022 count
Owner
County
County Highway Agency

About this bridge

383rd Avenue over Cain Creek is a steel stringer/multi-beam or girder carrying 383rd Avenue over Cain 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 56 vehicles a day, roughly 2% of them trucks, projected to reach 56 by 2032. The structure is 61 ft (18.6 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries383rd Avenue
CrossesCain Creek
Location4.5N & 4.0W of Wolsey
Coordinates44.48058, -98.55976
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
Deck4 PoorAdvanced section loss, deterioration, 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 statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating18 US tons
Inventory rating10.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span20 ft (6.1 m)
Deck width21 ft (6.5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 383rd Avenue over Cain Creek built?

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

What condition is 383rd Avenue over Cain 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 383rd Avenue over Cain Creek carry?

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

How long is 383rd Avenue over Cain Creek?

The structure is 61 ft (18.6 m) long with a longest span of 20 ft (6.1 m) and a deck 21 ft wide.

Who owns 383rd Avenue over Cain Creek?

It is owned by the County Highway Agency.