sentences:  As early as 1923 and late as 1928, a ferry connected Rock Hall with Bay Shore Park near Fort Howard in Baltimore County, thus briefly and indirectly connecting this MD 20 with the former MD 20 in Baltimore County.MD 20 was widened and resurfaced with bituminous concrete from Chestertown to Rock Hall in 1947 and 1948.Spring Avenue in Chestertown was resurfaced with bituminous concrete in 1950, and MD 20's bridge across Radcliffe Creek was replaced that year and 1951.