From SAH:
“The stone bathhouse at Sand Bar State Park is perhaps the single most substantial summer park building that the Civilian Conservation Corps (CCC) erected in Vermont. It also represents the contribution of the CCC in the development of twenty-two parks within the Vermont State Park system. The bathhouse, which measures approximately 35 × 90 feet, consists of two parallel, broadly gabled one-and-a-half-story toilet and shower buildings, one each for men and women and linked by a roofed picnic area. The rough-cut stone, oversize fireplace chimney, and massive stained timbers are characteristic of the CCC’s rustic style, also seen in hundreds of stone fireplaces and dozens of log picnic shelters the CCC built between 1936 and 1940 in such state parks as Mount Ascutney and Burke Mountain and the Groton and Calvin Coolidge state forests. The CCC built a bathhouse similar to this one at Elmore State Park, and a striking International Style–influenced bathhouse at Crystal Lake State Park in Barton.
On March 13, 1920, the State of Vermont completed land acquisitions that allowed Sand Bar State Park to become a migratory waterfowl sanctuary. Development of the park began in 1933 with CCC workers carting tons of rock to the sand bar to build stone walls to hold fill for park landscaping and buildings. When the park opened in 1935, the bathhouse and a picnic area were finished and the north shore of the sand bar developed into a fine one-thousand-foot-long, shallow public beach, a configuration the park retains today.”-https://sah-archipedia.org/buildings/VT-01-CH1
From Vermont State Parks:
“Sand Bar State Park takes its name from a natural sandbar between South Hero Island in Grand Isle County and the town of Milton on the Vermont mainland. The park is on the mainland, or eastern end, of that sandbar.
Sand Bar State Park began in 1933 and was built by the Civilian Conservation Corps, or CCC, a nationwide public works program created during the great economic depression of the 1930s to provide jobs and training for thousands of unemployed. Many of the parks in this country, both state and national, trace their origins to the CCC era. Sand Bar’s stone bathhouse was a CCC project completed in 1935. The original 10-acre park included a small campground on the south side of the highway. As U.S. 2 became a busier and faster road, camping that close to it, and crossing back and forth, was neither desirable nor particularly safe. In 1970, a land swap gave the former campground, now a fishing access area, to the Fish and Wildlife Department and brought the park to its present 15-acre size. The useable length of the beach was doubled and the picnic area, newer bathhouse, and long parking lot were built as the park expanded east onto land acquired from the refuge.”-https://vtstateparks.com/sandbar.html
From Wikipedia:
“Sand Bar State Park is a 15-acre (6.1 ha) state park in Milton, Vermont on the shore of Lake Champlain.[1] The park was established in 1933.
History:
The park was Vermont’s sixth state park and the first to be created on land purchased by the state. The land was developed in 1933 under the provisions of a 1929 state law authorizing such purchases. At first, it was primarily swampy marshland, which crews of the CCC cleared, filled, and graded. In addition to the bathhouse, the CCC also built a stone grill which still stands in the park. The upper level of the bathhouse was originally used as living quarters for caretakers and lifeguards but is now used for storage, while the rest of the structure, only modified to provide electricity and plumbing, continues in its original use. A reduced area of the park (about 4.5 acres (1.8 ha)) of the park surrounding the bathhouse was listed on the National Register of Historic Places in 2002 for its CCC-related elements.[3]”-https://en.m.wikipedia.org/wiki/Sand_Bar_State_Park