Fabrication for salt air and stream crossings
Two corrosion problems in one state. Ocean salt on the Assateague sand gets into every fastener and seam, and road salt through a western Maryland winter with more than 100 freezing nights does the rest. Anything welded or bolted on here wants coating and drainage designed in, not added later.
The mechanical case is the Poplar Lick road in Savage River State Forest, which the Department describes as having 13 stream crossings and only five bridges. That is repeated water over the axles and up the frame rails. Recovery points that a strap rated to 6,000 pounds can reach are required kit on the beach, so build them where a person kneeling in sand can actually reach them.