You can walk under the east end. Turn east from CO-149 onto Co. Rd. 430A, which is a few feet past a sign for the "Upper Coller State Wildlife Area." After crossing over the the river on a low-level concrete bridge, which is visible from the highway, bear right. Pull off on a grassy road in the field leading up to the trestle. This is on the State Wildlife Area.
(submitted by Rich A. on 05/01/13)