206th Street Bridge Pony truss bridge over Creek on 206th Street, 11.1 mi. north and 0.1 mi. west of Elkton in Richland Township Open to traffic Built 1910
209th Street Bridge Pony truss bridge over an unnamed creek on 209th Street, 2 mi. north and 1.5 mi. east of Bushnell in Alton Township Open to traffic Built 1913
477th Avenue Bridge Pony truss bridge over Creek on 477th Avenue, 6 mi. east and 5.4 mi. north of Brookings in Afton Township Open to traffic Built 1930
479th Avenue Bridge Pony truss bridge over an unnamed creek on 479th Avenue, 1.6 mi. north and 1 mi. east of White in Oak Lake Township Open to traffic Built 1920
483rd Avenue Bridge Pony truss bridge over an unnamed creek on 483rd Avenue, 3.3 mi. north and 3 mi. west of Elkton in Alton Township Open to traffic Built 1913
Big Sioux River Bridge Pony truss bridge over Big Sioux River on 210th Street, 1 mi. north and 1.8 mi. east of Volga in Volga Township Open to traffic Built 1907
Big Sioux River Bridge Pony truss bridge over Big Sioux River on 198th Street, 14 mi. north and 4.1 mi. west of Brookings in Eureka Township Open to traffic Built 1903 by the Iowa Bridge Co.
Big Sioux River Bridge Pony truss bridge over Big Sioux River on a county road, 3 mi. north and 1.1 mi. east of Bruce Unknown status Built 1916; rehabilitated 1975
Big Sioux River Bridge Through truss bridge over Big Sioux River on 215th Street, 3 mi. south and 2.7 mi. west of Brookings in Medary Township Open to traffic Built 1910; rehabilitated 1950
Big Sioux River Bridge Pony truss bridge over Big Sioux River on 470th Avenue, 0.6 mi. west and 4.1 mi. south of Brookings in Medary Township Open to traffic Built 1930
County Road Bridge Lost pony truss bridge over an unnamed creek on a county road, 1.0 mi. south and 3.2 mi. east of Volga No longer exists Built ca. 1910; replaced 2001
County Road Bridge Lost pony truss bridge over an unnamed creek on a county road, 0.6 mi. south and 2 mi. west of White No longer exists Built ca. 1910; replaced 2001
County Road Bridge Lost pony truss bridge over an unnamed creek on a county road, 2 mi. west and 3.7 mi. north of Bushnell No longer exists Built ca. 1920; replaced 2005
Creek Bridge Pony truss bridge over Creek on 475th Avenue, 2.9 mi. north and 3 mi. west of Bushnell in Aurora Township Open to traffic Built 1930
Medary Creek Bridge Pony truss bridge over Medary Creek on 472nd Avenue, 1 mi. east and 6.1 mi. south of Brookings in Medary Township Open to traffic Built 1910
Medary Creek Bridge Lost pony truss bridge over Medary Creek on a county road No longer exists Built ca. 1910; rehabilitated 1960; replaced 2001
North Deer Creek Bridge Pony truss bridge over North Deer Creek on 205th Street, 7 mi. north and 2.9 mi. west of Brookings in Sterling Township Open to traffic Built 1930
Six Mile Creek Bridge Pony truss bridge over Six Mile Creek on 205th Street, 1.5 mi. south and 2.2 mi. west of White in Afton Township Open to traffic Built 1930