US Bridges

42480 302nd Street over Beaver Creek

PoorPosted for load

Bon Homme County, South Dakota · 4N & 2.1W of Tabor · Structure no. 000000005238110

Built
1925
100 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

42480 302nd Street over Beaver Creek is a steel stringer/multi-beam or girder carrying 42480 302nd Street over Beaver Creek in Bon Homme County, South Dakota. It was built in 1925, so it is 100 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 60 by 2032. The structure is 26 ft (8 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries42480 302nd Street
CrossesBeaver Creek
Location4N & 2.1W of Tabor
RouteCounty Highway 0
Coordinates43.01044, -97.69756
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating9.6 US tons
Inventory rating5.7 US tons

Structure

MaterialSteel
DeckAluminum
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span25 ft (7.7 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2032
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$446,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 42480 302nd Street over Beaver Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is 42480 302nd 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 2023.

How much traffic does 42480 302nd Street over Beaver Creek carry?

About 60 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 42480 302nd Street over Beaver Creek?

The structure is 26 ft (8 m) long with a longest span of 25 ft (7.7 m) and a deck 16 ft wide.

Who owns 42480 302nd Street over Beaver Creek?

It is owned by the County Highway Agency.