TM 5-5420-278-10 0036 00 0036 00-1 BRIDGE OPERATION WARNING All bridge personnel must wear approved life jackets while on the bridge. Failure to comply may result in injury or death to personnel. Exercise caution when walking near centerline of roadway; the ponton alignment lugs project above the roadway surface on interior bays and constitute a tripping hazard. Failure to comply may result in injury to personnel. a.   Bridge Length Options NOTE It is possible to assemble a bridge in the following lengths. NUMBER OF INTERIOR NUMBER OF RAMP BRIDGE LENGTH BAY SECTIONS BAY SECTIONS (SHORE ENDS EXTENDED) FEET METERS 1 2 65.8 20.07 2 2 87.8 26.78 3 2 109.8 33.48 4 2 131.8 40.19 5 2 153.8 46.89 6 2 175.8 53.60 7 2 197.8 60.30 8 2 219.8 67.01 9 2 241.8 73.71 10 2 263.8 80.42 11 2 285.8 87.12 12 2 307.8 93.83 13 2 329.8 100.53 14 2 351.8 107.24 15 2 373.7 113.94 16 2 395.7 120.65 17 2 417.7 127.35 18 2 439.9 134.11 Table 1.  Improved Ribbon Bridge Lengths.