(Alpena, 72', 2015, 22-04-c) across slough of Thunder Bay River on the Alpena Bi-Path in Wildlife Sanctuary in Alpena, Alpena County, MI. US 23 (Chisholm St.) NW 1.6 miles from jct with MI32 (Washington Av), W. on Long Rapids Rd. 200’, S. into Wildlife Sanctuary 200 yds. Park & walk S. 250’ to the bridge. (N45 04.656 W83 27.142) Photos by Mark & Gordie Comstock 10-25-20.