This bridge was built on a trail near the outskirts of Rocky Glen (an abandoned burnt out amusement park). It was constructed so riders could avoid wet feet during the colder seasons and because the builders had no chicks and too much free time on their hands .

It was consructed mainly at night using dead or dying trees a few yards away.  The main crossmembers are seated on rock foundation and staked on all sides to hold it in place during spring flooding.  The planks are just logs split in half and nailed in place.   After 18 months of harsh weather it needs two of the less sturdy planks replaced.

As you can see the bridge is both safe and rideable (see disclaimer on top marquee) as Reptar demonstrates how that 1968 footage of "Sasquatch" was created.  Of course Sasquatch has less fur.