the roadway that would eventually become us 27 bus./sr 1 bus. was established at least as early as 1919 as part of sr 1. by the end of 1934, us 27 was designated on the entire length of sr 1. in the second quarter of 1935, a portion in the northern part of bremen had a "completed hard surface". between september 1938 and july 1939, a portion in the southern part of the city also had a completed hard surface. about 50 years later, in 1988, a western bypass of bremen, designated as sr 793, was proposed from south-southwest of the city to north-northwest of it. in 1993, us 27/sr 1 in the bremen area was shifted westward, onto the path of sr 793. the former path was redesignated as us 27 bus./sr 1 bus.