Cresta Aqueduct – Oroville, California
AT FIRST GLANCE, THIS STRUCTURE appears to be an enigma. It’s a bridge between two granite monoliths, an above-ground tunnel, and an aqueduct carrying water over a creek. This structure is actually part of an elaborate water system. The Feather River Canyon is a scenic wonder. Sheer granite slabs rise hundreds of feet above the water. Almost equally impressive are the measures engineers have taken to conquer this rugged terrain.