- Overall Length: 9.1km
- Total length of Tunnels: 7.7km (2 Tunnels)
- Total length of Bridges: 0.2km (2 Bridges)
- Total length of Road Embankment: 1.2km

The 4,800m Zhongren
Tunnel (twin tube tunnels) reach an overburden height of 1,226m. Special
precaution countermeasures were taken against tremendous groundwater inflow
during the typhoon season and passage through various faults.
Renshuei Tunnel: The only single-tube two-way tunnel in the project has an overall length of 2,948m. The tunnel is wholly situated in the Taroko National Park and in terms of its cross sectional area is regarded as the largest of highway tunnels in Taiwan.
