Show FOOT RIVER BRIDGE CARRIED ON PACK MULES government engineers says a recent washington dispatch have worked out means by which materials for a foot suspension bridge can be packed by mules down narrow trails and the structure erected to span the colorado river and the grand canyon national park arizona making the north rim about 1500 feet higher than the south rim gives new and alluring views of the canyon an announcement from the national park service said but difficulties of getting horses or mules across the river have made it almost unvisited the bridge will be flung across granite gorge about feet wide and with virtually perpendicular sides it will swing forty feet above the general water level and the bridge materials must be transported ten miles some of the way down switchback trails with a 40 per cent grade As the main cables weigh to pounds the means of bf transportation presented a difficult problem it is planned however to meet the situation by placing t each cable in four co coils ils to be swung 1 two to a mule and with a thirty foot section between the mules to permit tur turning ning around the switch backs the stirrup rods of the bridge must be folded for packing and even flooring sections must be cut to not m more ore than nine feet to get them around the corners the bridge will cost and it is expected to be ready for the coming summer season |