US Bridges

Bittersweet Creek over Castle Creek

Fair

Pennington County, South Dakota · T 1 N R 3 E Sec 12 · Structure no. 020306000010058

Built
1965
60 years old, rebuilt 2004
Condition
Fair
inspected May 2024
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
25
1991 count
Owner
Federal
U.S. Forest Service

About this bridge

Bittersweet Creek over Castle Creek is a wood or timber slab carrying Bittersweet Creek over Castle Creek in Pennington County, South Dakota. It was built in 1965 and reconstructed in 2004, so it is 60 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 25 vehicles a day, projected to reach 37 by 2045. The structure is 24 ft (7.3 m) long and 14 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesBittersweet Creek
CrossesCastle Creek
LocationT 1 N R 3 E Sec 12
RouteFederal Lands Road 429
Coordinates44.06285, -103.70028
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1991)
Projected traffic37 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Bittersweet Creek over Castle Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2004.

What condition is Bittersweet Creek over Castle Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Bittersweet Creek over Castle Creek carry?

About 25 vehicles per day (1991 count).

How long is Bittersweet Creek over Castle Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 14 ft wide.

Who owns Bittersweet Creek over Castle Creek?

It is owned by the U.S. Forest Service.