Did not have a lot of time, just the morning, but crossed the new steel deck bridge and rode to the 4031. Took that to the 1001, had a quick look around the country, and returned via the same route. Was on my CRF, no issues, but heavier bikes may not have it so easy, as the portion just over the bridge to the 4031 is built of sharp square-edged rocks dug right out of the bank, all uphills very rutted and full of holes. That being said, sure makes a trip to Phrao quicker from where I live. Next up is to ride thru Khun Chae park using this route as a start.