plans-Pre ad_AK NPS DENA 10(64).pdf

This is a preliminary design document for a road repaving project at Denali National Park and Preserve in Alaska, prepared by the U.S. Department of Transportation Federal Highway Administration.

The project, designated AK NPS DENA 10(64), involves re-paving approximately 2.08 miles of Riley Creek Campground roads in Denali Borough, Alaska. Work includes asphalt milling, grading, minor drainage improvements, subgrade stabilization, base reconstruction, asphaltic concrete paving, and striping on multiple road segments: the Main Access Road (100+00 to 111+80), US Post Office Parking Lot (10+00 to 11+20), Riley Creek Mercantile Delivery Access (800+00 to 801+31.99), and various campground loops including Loop Bear (400+00 to 424+06), Loop Wolf (500+00 to 527+10), Loop Caribou (600+00 to 619+93), and PATH Connector (295+00 to 307+12). Construction specifications reference the Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects (FP-24). The design includes detailed typical sections showing 28-foot total width construction with asphalt concrete pavement (type 1, 4-inch compacted depth), subexcavation with geotextile separation, aggregate base and recycled aggregate base construction methods, and comprehensive drainage systems. Permanent traffic control features include parking space markings with accessibility requirements, sign installations, and pavement striping per Manual on Uniform Traffic Control Devices standards. Temporary traffic control provisions address closures and diversions during construction. Survey control data and alignment sheets provide specific stationing and coordinate information for all project segments.