Specifications include, but are not limited to: The Department estimates the mainline surfacing width to be 22 feet. The Department estimates the total mainline area to be surfaced to be 35,820 square yards. The Department estimates the shoulder width to be 1 foot on each side. The Department estimates the total shoulder area to be surfaced to be 2,960 square yards. SURFACING AREAS FD05 059 0536 000-002 The Department estimates the mainline surfacing width to vary 22-34 feet. The Department estimates the total mainline area to be surfaced to be 34,930 square yards. The Department estimates the shoulder width to vary 1-4 feet on each side. The Department estimates the total shoulder area to be surfaced is included in the mainline surfacing quantity.