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