 MD 529 has been designated along three sections of the original alignment of US 13 from Princess Anne to Salisbury, including Loretto Road, Allen Road, and Camden Avenue.The state road on which US 13 was later designated was paved from the city limits of Salisbury to Fruitland in 1912, from Fruitland to Allen in 1913, and from Allen to Princess Anne in 1914.There remained a gap at Passerdyke Creek at the county line in Allen until a new mill dam was constructed in 1919.