the first part of md 374 to be paved was broad street in berlin in 1925. the pavement was extended west to around narrow branch road in 1929 and 1930 and to libertytown by 1933. a short segment was constructed west of libertytown in 1937. the section between powellville and the western end of the existing section of md 374 near libertytown was constructed on mostly new alignment between 1952 and 1956.