Waterview Tunnel

Waterview Tunnel

Alice the Tunnel Boring Machine during the construction of the Waterview Tunnel
Overview
Official name	Waterview Tunnel
Location	Auckland, New Zealand
Status	Operational
Route	SH 20 and SH 16
Start	Point Chevalier
End	Mount Roskill
Operation
Work begun	2011 (2011)
Opened	2 July 2017; 7 years ago (2 July 2017)
Operator	NZ Transport Agency
Traffic	automotive
Character	Motorway
Toll	None
Vehicles per day	75,000 (2020)
Technical
Length	2.4 kilometres (1.5 mi)
No. of lanes	3 per tunnel Total: 6
Operating speed	80 km/h (50 mph)
Tunnel clearance	Max vehicle height: 4.6 metres (15.1 ft) Internal diameter: 13.1 metres (43.0 ft)
Route map

The Waterview Tunnel is a twin road tunnel in central Auckland, New Zealand. At 2,400 metres (7,900 ft) long, it is New Zealand's longest road tunnel.^[1] The tunnel, with three lanes of road vehicle traffic in each direction, connects State Highway 20 in the south at Mount Roskill to State Highway 16 in the west at Point Chevalier as part of the Waterview Connection. Its opening completed the Western Ring Route motorway system.