"At the area down stream from the destroyed bridge - Rafts of large bamboo and empty 55 gal. drums floated even 6 x 6 trucks across - poled by Filipino men" From "Darkroom Soldier": "Crossing the Alba River. En route to Vigan, Hill admired both…
"At the raft / ferry crossing below the destroyed bridge - 6 x 6 Army truck. Note truck trafts had empty 55 gal drums for extra buoyancy. 9 polers on down-stream side - one on the upstream side"