The team must build strong abutments that will prevent the bridge from sinking into the river's soft muddy banks. The first job is to build a dam.

Woven strips of bamboo are put into place to give the dam shape. The men shovel in clay to make a watertight barrier. When this dam is complete, water is bailed from the space where the abutment will be built.

The men pound 36 piles a full six feet into the sub-soil.

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