They are supported by A-shaped concrete piers with a capital at the top flared outward at the same angle as the outriggers on the historic bridge. The piers themselves are a constant 10 feet (3 m) in the direction of the bridge but stretch from 6 feet (2 m) at the top to 10 feet (3 m) at the bottom. Their footings are on 12 4-foot–wide () drilled 20 feet (6 m) deep into the bedrock. The abutments on either side of the gorge are supported by 72 micropiles designed to support 150 kips each.