A-2 starts at an intersection with
M-63 about west of the
I-196/
US 31 freeway in
Lake Michigan Beach. From this intersection, the county highway runs northward through forest between
Lake Michigan and the freeway in northern
Berrien County. A-2 crosses into
Van Buren County about a mile (1.6 km) later and continues winding north-northeasterly. At various locations, local roads connect the county road to interchanges with the freeway as the two run roughly parallel together. Blue Star Highway passes the
Palisades Nuclear Generating Station near
Covert before coming into the southern edge of
South Haven. In South Haven, A-2 bypasses downtown, rounding the district to the south and east. The county road intersects
BL I-196 at Le Grange Street due south of downtown and
M-43 a block later. In this area, Blue Star Highway is bounded by a mix of mostly commercial and some residential properties. On the north side of the city, A-2 intersects BL I-196 a second time at Phoenix Street and then continues due north out of town, crossing the
Black River. The landscape transitions over to a rural forest area with residential properties as A-2 continues across the county line into
Allegan County and passes the South Haven Country Club and some vineyards. A-2 turns northeasterly near
Glenn and crosses over I-196/US 31 to run east of the freeway. Blue Star Highway here follows 68th Street in the county road grid through the community of
Ganges. North of the community, A-2 intersects
M-89 about east of its terminus at I-196/US 31. North of here, the freeway turns to the northeast and crosses under A-2. Blue Star Highway continues due north into
Douglas. In the city, the county road is bounded by businesses as it S-curves northeasterly to cross a narrow spot of
Kalamazoo Lake (part of the
Kalamazoo River) into
Saugatuck. A-2 bypasses downtown Saugatuck to its east and continues north and northeasterly out of town. The county road crosses over the freeway again and out to farmlands before turning north along 58th Street, well inland of I-196/US 31. From here, A-2 runs due north and crosses I-196 one last time near the south side of the
West Michigan Regional Airport; this crossing has no interchange. The county road passes under the west end of the airport's runway in a tunnel as it meanders along South Washington Avenue to an interchange with
BL I-196/US 31 on the south side of the city of
Holland where it terminates. South Washington Street continues northward into downtown without the county highway designation. As a county-designated highway, the length of A-2 is maintained by the Berrien, Van Buren, and Allegan county road commissions (BCRC, VBCRC, ACRC) in their respective counties. ==History==