 Planks laid on stringers form the deck; alternating timbers protrude to create a series of four buttresses on the sides of the bridge.Vertical board sheathing on horizontal nailers constitutes the bridge's siding; the roof and buttresses are clad in wood shingles.In 1902 the town of Hardenburgh awarded local carpenter Edgar Marks the contract to build a bridge over Mill Brook near the county line, a couple of miles below its headwaters on Balsam Lake Mountain.