 The two highways split two miles (3 km) west of their join point and WIS 13 merges with WIS 73 north.At the junction with WIS 34, WIS 73 turns westerly via W. Grand Ave, and WIS 13 continues due northerly concurrent with WIS 34 for approximately 12 miles before interchanging with the US 10 freeway 3 miles west of Junction City at Exit 204.There, WIS 13 turns to follow US 10 west toward Marshfield, following the US 10 expressway bypassing Milladore, Blenker, and Auburndale.