The north-south 1120 runs between Chiang Muan and Song, from Phayao province into Phrae.
Just over the Phrae border, the 4020 runs east off the 1120. On the Thinknet map, it is marked as a dead end road to Wat Huai Pong.
Just over the Phrae border, the 4020 runs east off the 1120. On the Thinknet map, it is marked as a dead end road to Wat Huai Pong.