the roadway that would eventually become us 27/sr 1 was established at least as early as 1919 as part of sr 1. between april and october 1934, a portion in the southern part of buchanan had a "completed hard surface". by the end of the year, us 27 was designated on sr 1. in the third quarter of 1939, a portion in the northern part of the city had a completed hard surface. about 50 years later, in 1989, sr 811 was proposed from us 27/sr 1 south-southeast of buchanan north-northwest across us 27/sr 1, and curved around the east side of the city to a point north-northwest of it. in 1992, us 27/sr 1 was rerouted onto the proposed path of sr 811 and was shifted east of the city. the former path was redesignated as us 27 bus./sr 1 bus.