Ankeny, Iowa

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6th Street Culvert (Polk County, Iowa)
Concrete culvert bridge over Unnamed Drainage Ditch on 6th Street
Open to traffic

Ankeny Luten Arch (Polk County, Iowa)
Built 1910; Damaged irreparably by flooding in 1917
Lost Luten arch bridge over Fourmile Creek on 1st Street
Destroyed by flooding

High Trestle Trail - Pasture Bridge (Polk County, Iowa)
Beam bridge on High Trestle Trail
Open to pedestrians only

High Trestle Trail - Rock Creek Bridge (Polk County, Iowa)
Timber stringer bridge over Rock Creek on High Trestle Trail
Open to pedestrians only

High Trestle Trail - Rock Creek Culvert (Polk County, Iowa)
Concrete culvert bridge over Rock Creek on High Trestle Trail
Open to pedestrians only

High Trestle Trail Culvert #1 (Polk County, Iowa)
Concrete culvert bridge over Unnamed Stream on High Trestle Trail
Open to pedestrians only

NE 102nd Avenue Bridge (Polk County, Iowa)
Built 1917, Replaced 2017
Concrete deck girder bridge over Fourmile Creek on NE 102nd Avenue
Replaced by a new bridge

NW 84th Avenue Arch Bridge (Polk County, Iowa)
Closed-spandrel arch bridge over Rock Creek on NW 84th Avenue
Open to private traffic

Old IA415 Rock Creek Bridge (Polk County, Iowa)
Built 1917; replaced 2000
Lost concrete arch bridge over Rock Creek on Old IA 415
No longer exists

Oralabor Gateway Trail - Carney Marsh Culvert (Polk County, Iowa)
Built 1911
Concrete culvert bridge over Carney Marsh on Oralabor Gateway Trail
Open to pedestrians only

UP - Fourmile Creek Bridge (Polk County, Iowa)
Deck plate girder bridge over Fourmile Creek on Railroad
Open to traffic

UP/DCI Overpass (Polk County, Iowa)
Steel stringer bridge over abandoned Railroad (DCI) on Railroad (UP)
Open to traffic