1870- Belpre, Ohio- Bollman 16/? In approaches; 7 spans on c.1895 Parkersburg, W. deck Ohio side; 9 on West Va., Ohio River truss Virginia side. B. & O. RR.
1870-? Elysville, Md., Bollman 4/? Skew; replacement of Patapsco River through Upper Bridge(?). B. & O. truss RR.
1871- Baltimore, Md., Timber ? Decker Street (now c.1895 Jones Falls and iron Maryland Avenue) Bridge. truss Cost, $24,975. Built by Bollman.
1871- Baltimore, Md., Warren 1/100' North Avenue Bridge. c.1892 over Northern truss Composite double Central RR. at intersection truss; Jones Falls cast-iron top chord and posts; wrought-iron bottom chord and ties. West span. Built by Bollman.
1873-1923 Cave Station, Va., Bollman 1/98'7" Valley Railroad of Middle River deck 1/63'5" Virginia (B. & O.) Bridge truss no. 120. The main span was a Whipple deck truss. Replaced with plate girders. Designed by Bollman.
1873-1923 Mount Crawford, Bollman 2/98'6" Valley Railroad of Va., North River deck 1/148'9" Virginia (B. & O.) Bridge truss no. 117. Designed by Bollman.
1873-1923 Verona, Va., North Bollman 3/98'7" Valley Railroad of River deck Virginia (B. & O.) Bridge truss no. 129. The main span was a 147-ft. Whipple deck truss. Designed by Bollman.
1873-? Wadesville, Va., Bollman 1/147'8" Span length given is that Opequon Creek through of previous wood span truss that burned in 1862. B. & O. RR.
c. 1873- Baltimore, Md. Iron roof ? First Presbyterian trusses Church. Built by Bollman; possibly designed by him.
1873- Baltimore, Md. Cast-iron City Hall. Cost, $12,840. stairs Designed by George A. Frederick, architect; built by Bollman.
1873- Baltimore, Md. Cast-iron Dome of the City Hall. framework Cost, $70,525. Designed by George A. Frederick; built by Bollman.
1875- Baltimore, Md., Iron truss 1/? Fayette Street Bridge. c.1913 Jones Falls Cost, $9,396. Built by Bollman.
1876- Baltimore, Md., "Single- 1/? Canton Avenue (now Fleet c.1913 Jones Falls beam iron Street) Bridge. Cost, bridge" $8,904. Built by Bollman. (truss?)
1876- Baltimore, Md., "Single- 1/? Eastern Avenue Bridge. c.1913 Jones Falls beam iron Cost, $12,382. Built by bridge" Bollman. (truss?)
1877- Baltimore, Md., Pratt and 1/88'6" Lombard Street Bridge. Jones Falls bowstring Three lines of truss; truss two outer trusses, composite cast- and wrought-iron polygonal Pratt type; center composite bowstring with Pratt-system web. Both chords are cast-iron water mains, bifurcated at the end bearings; cast-iron posts and wrought-iron ties. In service. Cost, $7,632. Designed by Jas. Curran, Baltimore water department; built by Bollman.