Monument: Slabs of US 40 and Lincoln Highway

Auburn, California

In 2014 the Placer County Water Agency had to dig up part of Ophir Road to lay a new pipeline underneath it. But before Ophir Road was just Ophir Road it was US 40, and before that it was the Lincoln Highway -- the main route over the Sierras before Interstate 80 was built.

Informed by the local community of this history, the Water Agency saved a pavement slab it had dug up from US 40, and outlined in the ground a pavement slab of the Lincoln Highway, and incorporated them both into a layered roadside monument.