From I-5: Take I-5 to Exit 71 (Onalaska), midway between Portland, Oregon, and Seattle, Washington. Go east 2/10 mile to Forest Road. Take Forest Road east 1.6 miles to Jackson Hwy and drive 4/10 mile to North Fork Road. Turn right on North Fork Road and drive 4.1 miles to Centralia-Alpha Road. Turn right on Centralia-Alpha Road and drive 6/10 mile to the preserve on the right.
Take US Hwy 12 West to milepost 81 at Silver Creek (approx. 5 miles from Mossyrock). Proceed to the Silver Creek Grange, Turn right onto SR 122. Follow about 1.5 miles and keep left at Y to Cinebar Rd. (SR 508 detour). Follow Cinebar Rd. to stop sign at SR 508 (about 5 miles). Turn left onto SR 508 and follow about 5 miles to Alpha Rd. Turn right and follow Alpha (which becomes Centralia-Alpha Rd.) to the preserve. The preserve is between mileposts 10 and 11.