Chamberlain Bridge Through truss bridge over the Missouri River (Francis Case Lake) on Business Loop I-90 in Oacoma Open to traffic Built 1953
County Road Bridge Lost pony truss bridge over an unnamed creek on a county road, 0.3 mi. south of Vivian No longer exists Built ca. 1930; replaced 2004
Medicine Creek Bridge Pony truss bridge over Medicine Creek on IRR County Road, 7.8 mi. north and 5.9 mi. east of Kennebec in Pleasant Township Open to traffic Built 1930
White River Bridge Lost through truss bridge over White River on SD 53 No longer exists Built 1925; replaced 2001
Williams Creek Bridge Pony truss bridge over Williams Creek on Old SD 53 Open to traffic Built 1928; rehabilitated 1946