The Piermont Bridge carries New Hampshire Route 25 over the Connecticut River to the contiguous Vermont Route 25 between Piermont, New Hampshire and Bradford, Vermont.

The western (Vermont) abutment is made of split granite quarried from nearby Fairlee Mountain, while the eastern abutment is an early concrete construction built in 1908 by John Storrs for an earlier bridge.

The center pier of the older bridge was knocked down to the waterline and is still visible.

The eastern abutment, built in 1908 in a relatively early use of structural concrete, needed to be strengthened to accommodate the increased weight of the new steel bridge.

This was accomplished by adding new concrete to the land side of the abutment, preserving the earlier work.