Diesel-powered trains with vintage cars. Begin your rail experience by purchasing a ticket at the fully-restored, 1916 SOO Line Depot in Osceola. The Marine on St Croix departure times are noon and 2:30 on Sun. These trips take you on a 20-mile journey along the sandstone bluffs of the St. Croix River. You'll cross into Minnesota on the Cedar Bend Draw Bridge, stopping in Marine on St. Croix, then returning to Osceola. Enjoy special occasion rides such as: Dinner & Pizza, Brunch, Leaf Viewing, Pumpkin Rides or Charter your own.