McCune is one of 29 young adults between age 18 and 28 who share that same desire and are spending the summer as Bike & Build volunteers. The bicyclists, who raise funds for and execute affordable-housing projects in communities along their route, expect to arrive in Seattle on Aug. 15. Tuesday was their 19th day on the road.  So far, bicyclists on the Providence to Seattle trip have raised $145,013, according to the organization’s website. Almost three-quarters of the trip remains, but both McCune and Zack Peak, a 20-year-old political and social-thought student at the Universi...