分享一下IGN提供的四种办法(https://www.ign.com/wikis/gta-5/Spaceship_Part_44) 1、Parachute to it after jumping out of a helicopter (easy), plane, or after jumping off of the bridge. Do not parachute to where the vertical beam and arc meet as you will teleport to the ground below the bridge. 2、Land the Buzzard chopper on the middle of the arc beam (see screencap above). Exit the chopper and take the case; this a difficult method. 3、Park the HVY Dump vehicle from the quarry at the south side of the bridge underneath the bridge then climb onto the vehicle to climb onto the concrete arc of the bridge then walk to the middle of the curve to get the case. 4、Ramp off of the nearby dirt slope with a fast motorcycle using Franklin's special ability and land it on the arc. Drive the motorcycle to the middle of the arc; this is a difficult method.