Park in the area provided west of the cattle guard. From Moab, travel 43 miles on UT 128 to Cisco and proceed as above. Dewey Bridge is about 28 miles northeast along UT 128 from the intersection with U.S. Highway 191 just north of Moab. Access is via the Onion Creek Road off UT 128 located 10 miles southwest of Dewey Bridge or 18 miles northeast of the intersection with US 191 just north of Moab. Onion Creek two dozen times and may not be suitable for passenger cars.
Alternate access is by way of Castle Valley.
The Castle Valley Road turns south from UT 128 about 15 miles southwest of the Dewey Bridge or 13 miles from the intersection with US 191 just north of Moab. Although the map itself is generalized, the trail log is precise. Here are some highlights. Get Adobe Acrobat. Get Adobe Acrobat.