115 jetties along the beach. The erosion had caused of beach to wash away between 1947 and 1955. The New York State Department of Public Works commenced a multi-year project in 1955 to combat this erosion, including adding forty groins and transferring of fill onto the beach to create a barrier. By 1959, Moses had extended the beach eastward to Beach 9th Street, and commenced work for O'Donohue Park alongside the new stretch of beach, which opened in 1961. Part of the boardwalk in Arverne was burned down in 1960 and was subsequently rebuilt. As part of the construction of O'Donohue Park, a section of concrete boardwalk from Beach 9th to 19th Street was built in the early 1960s. This section was constructed with a budget of $1.373 million. 1970s to 2000s Repairs costing $115,000 were made to the boardwalk in the late 1960s or early 1970s. However, by 1971, NYC Parks was considering replacing the wooden planks with plastic or concrete due to the high maintenance cost of the wooden planks, which were deteriorating. The central Rockaways were in decline at the time, and fewer concessions were operating on the boardwalk every year. Further, because of erosion of the beach, water would go under the boardwalk at high tide, and some stairs from the boardwalk led to steep drop-offs where the beach formerly was. Thirteen blocks of the beach had eroded away by 1973, forcing the closure of parts of the beach in the Edgemere and Rockaway Beach neighborhoods, and the boardwalk had become dilapidated. To remedy this issue, the United States Army Corps of Engineers (USACE) started preparing a hurricane-protection and water-purification project for the Rockaways. A plank replacement project, commenced in 1975, was stopped later that year due to the city's 1975 fiscal crisis. Work on the plank replacement restarted in 1977 as part of a $19 million investment in parks citywide. During the late 20th century, the boardwalk also became known for dangerous incidents, including wild dog attacks. A large segment in Edgemere and Arverne abutted vacant lots, which were still extant during the 2010s. The last of the amusements that once occupied the boardwalk, Rockaways' Playland, closed in 1987. However, the New York Daily News reported in 1980 that Rockaway Beach was cleaner than Coney Island's beach, in part because of large cleaning crews and because of the park's proximity to the Edgemere Landfill. The