Helicoidal Skew Arch

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7th Street Improvement Arches (Ramsey County, Minnesota)
Built 1884
Stone arch bridge over RCRRA on E. 7th Street in St. Paul
Open to traffic

Charlie Creek Bridge (Doniphan County, Kansas)
Skewed stone arch bridge over Charlie Creek on 190th Road
Open to traffic

CSX - Jackson Street Overpass (Chautauqua County, New York)
Built 1869
Stone arch bridge over Jackson Street on CSX Railroad
Open to traffic

CSX - OH19 Overpass (Seneca County, Ohio)
Built 1900
Stone arch bridge over OH 19 on Railroad (CSX)
Open to traffic

Farmington Canal Heritage Trail - Lock 12 Bridge (New Haven County, Connecticut)
Built ca. 1846
Stone arch bridge over Farmington Canal on Farmington Canal Heritage Trail
Open to pedestrians only

NS - Askew Bridge (Berks County, Pennsylvania)
Built 1857
Stone arch bridge over 6th Street on Philadelphia & Reading Railroad
Open to traffic

Skew Arch Bridge (Blair County, Pennsylvania)
Built 1832, Closed to traffic 1922, Restored in 1979
Stone arch bridge over Ravine on Pedestrian Pathway
Open to pedestrians only

UP - Rockford Rail Crossing (Winnebago County, Illinois)
Built 1896
Stone arch bridge over Future Park (Nee CB&Q) on Railroad (UP)
Open to traffic

UP - South Street Arch (McHenry County, Illinois)
Built 1867, Widened 1897
Stone arch bridge over South Street on Union Pacific Railroad
Open to traffic