Provincial Highway 3 (Taiwan)

NH 3 in Tucheng
 NH 4 in Fengyuan
 NH 3 in Wufeng, Taichung
 NH 3 in Nantou

Provincial Highway No. 3 (台3線) is a 438.7 km-long provincial Taiwanese highway that starts in Taipei and ends in Pingtung. Also known as Inner-Mountain Highway (內山公路), the road travels through the mountain towns in Western Taiwan and was the major route for the area until NH 3 was built.

Spur Routes

• Highway 3A: The route connects Caotun, Nantou and Nantou City. The total length is 11.7 km.
• Highway 3B: The highway is a spur route that goes from Shimen Dam to Highway 3 in Daxi, Taoyuan. The total length is 12 km.
• Highway 3C: The route goes from Zhushan, Nantou to Jiji, Nantou. The total length is 7.1 km.