1863(4?)-? Clinton, Iowa, Pivot 1/360' Built by Detroit Bridge Mississippi River draw & Iron Works. It was the longest in the world at time of completion. Designed by Bollman. 1864-? Laurel, Md., Bollman ? Replaced stone arch that Patuxent River truss had been washed out. B. & O. RR. c. 1864-? Near Veracruz, Bollman 1/115' Veracruz & Jucaro RR. Mexico, Medellin through First iron bridge in River truss Mexico. Designed and built by Bollman. 1864-? Near Point of Bollman 1/80'(?) Iron bridge mentioned in Rocks, Md., Back truss(?) B. & O. RR. annual Creek report, 1864. The span length given is that of previous stone arch. 1864-? Bladensburg, Md., Bollman 1/? Span for second track, to Anacostia River truss match 1851 span. B. & O. RR. 1868-? Cape Fear, N.C., Bollman 2/146'6" Wilmington Railway Bridge Northeast Branch, truss(?) 1/164' Co. This bridge was Cape Fear River pivot connected to that over draw/150' the Northwest Branch by 2-1/2 miles of timber trestling. Designed and built by Bollman. 1868-? Cape Fear, N.C., Bollman 1/217'(?) See above. Northwest Branch, truss(?) pivot Cape Fear River draw/150' 1868-? Quincy, Ill., Bollman 4/85' Chicago, Burlington & Quincy Bay (in deck pivot Quincy RR. The pivot draw Mississippi River) truss draw/190' was formed of two 85-ft. simple Bollman deck spans whose outer ends hung from hog chains. Designed by Bollman; built by Detroit Bridge & Iron Works.