The carriage roads, built from 1913 to 1940, were state of the art for their time. Steam-powered machines made some construction easier, but intensive hand labor was still required. Laborers dug ditches, masons built retaining walls, and stonecutters shaped granite bridge facing. Blacksmiths worked on-site to sharpen simple tools such as hand drills. A September 25, 1918 construction contract required the dismissal of incompetent workers and barred the giving, selling, or keeping of ardent spirits on any part of the work or in any boarding house or building under the contractor’s control. Despite weathering and limited maintenance, these roads have survived many years as a testimony to the craftsmanship and methods used.