1877- Baltimore, Md., Iron truss 1/? Bath Street Bridge. Cost, c.1913 Jones Falls $4,172. Built by Bollman.
1879-? Baltimore, Md. Drawbridge 1/? Over entrance to City Dock. Cost, $13,182. Built by Bollman.
1879- Baltimore, Md., Warren 2/173'9" North Street (now c.1930 over Jones Falls truss Guilford Avenue) Bridge. and railroad Composite trusses; tracks cast-iron top chord and end posts; wrought-iron bottom chord and web members. Cost, $38,772.45. Built by Bollman; designed by Latrobe.
1881-1960 Baltimore, Md., Wrought- 1/? Union Avenue Bridge. (Woodberry), iron Pratt Built by Bollman; Jones Falls truss possibly designed by him.
?-? Harpers Ferry, Va., Bollman 1/148' Arsenal Branch, B. & O. Arsenal Canal through RR. Skew type. Span truss length is that of previous timber span.
?-? Baltimore, Md., Bollman 2/? B. & O. RR. Gwynns Falls through truss
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