Castlewood Bridge in a new home- On the Threshing Grounds

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Photo from City of Castlewood

BHC Mystery Bridge

Approximately two weeks ago, I did a write-up on the Castlewood Thacher Truss Bridge, which had once spanned the Big Sioux River just outside Castlewood in Hamlin County, South Dakota. The bridge was listed on the National Register of Historic Places in 1993 but not before it was bypassed by a low-water crossing. On GoogleMaps, one can only see the lally columns and the wing-walls but no truss structure. My question was “Where’s the Bridge?”

Many people thought the bridge was long gone, however…….

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The bridge is still alive and well- but in a new home! 🙂 ❤

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Jennifer Heath made a stop at the Threshing Grounds located outside Twin Brooks in Grant County and found the Thacher structure in use. Thanks to Don Morrison, who added the coordinates in my article from 20 February, she took a brief stop at the bridge a couple days ago to cofirm the bridge’s existence.

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According to the information posted on the sign, the bridge was re-erected at the site in 1998, which meant that it had been taken off its original piers at Castlewood prior to 1997 and moved to this site. The bridge still serves traffic and is one of key features of the Twin Brooks Threshing Show Grounds. Featuring historic buildings (relocated here), farm exhibitions and a flea market, the Grounds hosts the annual threshing show in August, featuring antique tractor pulls and other forms of entertainment. It’s unclear how long they’ve been hosting the event or what the motive behind purchasing this historic bridge was. However it is clear that this bridge is the second of three hybrid Thacher structures that was relocated to a historic town setting to be used for exhibits and entertainment. The Yellow Bank Church Bridge in Laq Qui Parle County, Minnesota made its home at the Little Log House Pioneer Village, south of Hastings in Dakota County, Minnesota, when it was relocated there in 1989 and serves as a replica of the city’s beloved Spiral Bridge. The Castlewood Bridge sits over the creek and on concrete shows; its decking appears to be concrete, which makes carrying tractors and trucks a possibility.

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While more information on the creation of the Grounds and the relocation of the bridge is needed (and will require a few e-mails and phone calls to find out -stay tuned), the bottom line is that the Castlewood Bridge has been found and is still serving traffic- 22 years after its relocation from its Big Sioux crossing. And it appears that with as much care as it has been taken, this bridge will remain a key ornament for the Grounds for many years and generations to come. For Twin Brooks, as well as Grant County and the state of South Dakota, it is a win-win situation, when someone preserves a key piece of history and uses it for a tourist attraction. 🙂

Which makes me wonder whether the Ellsworth Ranch Bridge in Emmet County, Iowa will be the next candidate to make such a move….. And if so, where to? 😉

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Many thanks to Jennifer Heath for the wonderful photos of the bridge and to Don Morrison for providing the coordinates. You can find the new bridge via bridgehunter.com here.

BHC 10 years