To Myitta asphalt road in okay to good condition, after that dirt track. One stop for passport control at a one-way bridge:
In parts, the road is so bad that the driver has to go down to 1st gear. The road is mostly two-directional (one lane in each direction), but parts are one-directional with enough space on the sides so two cars can pass slowly in opposite directions.
Then driver’s and other passengers lunch break, then about 850 m drive to border, change of time zone, forward clock 30 min.
The driver takes all our passports and presents them here. From dirt track to two-lane asphalt road, picture from google satellite:
Then continue 3.7 km to Thai immigration
and get processed there 13:40-43. Welcome to Thailand: