Home›Books›Project F DP 8-2(6) 34 & 38, Helena-West, Lewis and Clark County, Montana, draft environmental impact/4(f) statementProject F DP 8-2(6) 34 & 38, Helena-West, Lewis and Clark County, Montana, draft environmental impact/4(f) statementby United States. Federal Highway AdministrationNo description available.Highway planningRoads