Taichung-Zhanghua Expressway (中彰快速道路) is the main stretch of Provincial Highway No. 74 that runs from northwestern Taichung to the northern part of Zhanghua City (in Changhua County) just to the south of Taichung.
Taichung-Nantou Expressway (中投公路) also known as Provincial Highway No. 63, runs from Taichung's Dali District to Nantou County.