A.C. Boyle & Co.
of McGregor, Iowa
Dry Run Bridge
(Clayton County, Iowa)Built 1898Steel stringer bridge over Dry Run on Town RoadOpen to traffic
Garnavillo Township Bridge
(Clayton County, Iowa)Built 1902Stone arch bridge over Unnamed Stream on 250th StreetClosed to all traffic
Motor Mill Bridge (1899)
(Clayton County, Iowa)Built 1899Pratt through truss bridge over Turkey River on Galaxy RoadDestroyed by flooding in 2008; replica spans now in place and open to traffic