u.s. route 27 business (us 27 bus) is a business route of us 27 that exists almost entirely within the city limits of bremen. it is concurrent with state route 1 business (sr 1 bus.) for its entire length. us 27 bus./sr 1 begins at an intersection with us 27/sr 1 in the southern part of the city, just north of interstate 20 (i-20), in the north-central part of carroll county. the business routes head to the northeast, enter haralson county, and briefly leave the city limits. just after re-entering, they travel under a railroad bridge that carries railroad tracks of norfolk southern railway. they curve to the north-northwest and pass higgins general hospital at a point just west of bremen high school. they intersect us 78/sr 8 (atlantic avenue/pacific avenue). immediately on the north side of the intersection are railroad tracks for southern railway and norfolk southern railway. they continue to the north-northwest and leave the city again before reaching their northern terminus, a second intersection with us 27/sr 1 north-northwest of the city. the entire length of us 27 bus./sr 1 bus. is part of the national highway system, a system of routes determined to be the most important for the nation's economy, mobility, and defense.