Nuʻuanu Pali Tunnels

The Nuʻuanu Pali Tunnels are a set of four highway tunnels (two in each direction) on the Pali Highway (Hawaii Route 61) which pass through the Nuʻuanu Pali in Hawaii, United States. These tunnels serve as one of three trans-Koʻolau routes between Honolulu (leeward Oʻahu) and the communities of windward Oʻahu. Also, the Nuuanu Pali Tunnels serve as a major transportation route from Kaneohe and Kailua over to Honolulu. These tunnels and the Pali Highway were built to provide a safer route through the mountain ridge, replacing a narrow, winding, and dangerous road over the mountain.^[3]

Nu‘uanu Pali Tunnels

Nu‘uanu Pali Tunnels traveling on Pali Highway windward bound.
Overview
Route	Pali Highway (Hawaii Route 61)
Crosses	Nuʻuanu Pali
Start	Honolulu
End	Windward Oʻahu
Operation
Opened	1959[1] or 1961[2]
Traffic	Automobile