1852- Savage, Md., Little Bollman 2/±80' Still standing. Moved to Patuxent River through Savage in 1888; original truss location unknown. This and succeeding Bollman trusses use iron towers. B. & O. RR. 1852 (or Marriottsville, Bollman 1/50' One of first Bollman 1853)-? Md., Patapsco River truss trusses with iron towers. B. & O. RR. 1853-? Zanesville, Ohio, Bollman 4/124' Double track, Central Ohio Muskingum River truss (or RR. Designed by Bollman; 5/160') built by Douglas, Smith & Co., Zanesville. 1854- Elysville (now Bollman 3/97'9" Upper bridge, skew. Cost, 1870(?) Daniels), Md., through $24,477.59. B. & O. RR. Patapsco River truss 1854-1862 Monocacy, Md., Bollman 3/119' Blown up September 8, Monocacy River truss 1862; rebuilt in 1864. Cost, $22,722.59. B. & O. RR. 1854-? Eastern Ohio Bollman 1/40' C. O. RR. Section 76 truss(?) adjacent to 300-ft. tunnel. 1855-? Bridgeville, Ohio, Bollman 1/71' C. O. RR. Salt Creek deck truss Pre-1855-? Buffalo, N.Y. -- -- Unidentified. Mentioned by George Vose in Railroad Advocate (June 9, 1855). 1856-? Elysville, Md., Bollman 3/111' Lower Bridge. B. & O. RR. about 1-1/4 miles through east of 1854 truss bridge, Patapsco River Pre-1856-? Marriottsville, Bollman 1/48'9" Referred to as "Tunnel Md. truss(?) Bridge" in B. & O. RR. annual report, 1856. 1856-? Near Ijamsville, "Iron 3/23'9" Possibly trussed beams; Md., Bush Creek girders" mentioned in B. & O. RR. annual report, 1856. 1856-? Near Ijamsville, "Iron 2/23'9" As above. Md., Bush Creek girders" 1856- North Branch, Md., Bollman 3/142' Partially destroyed in c.1862 Potomac River deck truss Civil War. B. & O. RR.