CASTLE ROCK, Colo. As Douglas County continues to grow, some residents are concerned about the county's plan for road infrastructure.Following a fatal crash on I-25 on May 15 that shut down the highway for hours, many people expressed frustration and concerns. More than 100 people commented on a story about that crash on the Denver7's Facebook, and several emailed Denver7 Douglas County Reporter Tyler Melito directly, with comments sharing their…