St. Croix River Boat Launch Share: St. Croix River Boat Launch Visit Website 18 Buckeye St. Hudson, WI 54016 715-386-4774, ext. 113 About Map About The boat launch on the St. Croix River has two docks for launching and parking for vehicles and trailers. What's Nearby? Distance: 5 10 15 20 25 50 mi.