Seems like quality construction at least in a temporary fashion like a logging company would build. 

Those clouds look scary, although we got no more rain for the rest of the day. Also, notice the beautiful COR-TEN guard rail, which is rapidly becoming an endangered species, as the DOT is going back to stainless. Maybe at specifically scenic locations, like here, they will choose painted stainless guard rail, as used on the bridge rails here (but not the guardrail).