STEAMBOAT — Bob Kuusinen will leave behind a rich legacy that stretches more than 46 years when he steps down as Vectra Bank’s market president at the end of July. Kuusinen, who moved to Steamboat Springs in 1973, has been at Vectra Bank for nearly 12 years. Before that, he was a commercial banker at Yampa Valley Bank and also worked at Steamboat Resort for 30 years in a number of positions ranging from flipping hamburgers to serving as vice president of operations. Kuusinen’