A nonprofit Christian group broke ground Tuesday on a $3.9 million youth center in a vacant lot near the Missoula County Fairgrounds. Plans call for a 34,000 square foot facility, with office space for as many as nine nonprofits and a recreation area with a pair of classrooms, a gym, a teen center, a cafe, a computer lab and a sports arena. The building will also house a storage area for the nonprofits.