Take I-15 to Montana City Exit and head east; turn right onto the McClellan Creek Road (just past the pizza restaurant.) Continue on this road approximately 6.5 miles to the Crystal Creek/McClellan Creek Junction turn right, and continue another 2 miles to the Casey Meadows/McClellan Creek trailhead. Another way to access the trailhead is to take Highway 12 East, 2-miles east of East Helena, turn south onto McClellan Creek Road. Either route is approximately 10 miles on dirt roads. Park next to the bridge; walk across the bridge to access the trailhead.