Constructed between 1897 and 1901, the Karori Tunnel is Wellington's oldest road tunnel. It links Wellington City with the Karori suburb resolving major challenges with commuting and traffic as the hill is quite steep and the easiest journey was quite circuitous over what was once known as Bakers Hill.
Initial estimates were that it would take only six months to build however it ran into issues from the start, including collapses and slips during construction. It was built using the standard method of the time, a small tunnel was initially driven through the hill which was then widened to the full aperture. The tunnel is approximately 225 feet long and the apex of the portal is 18 feet above the road with a width at road level of 24 feet. The structure was strengthened for seismic protection between 2012 and 2013, adding reinforced concrete and with new capping beams.
At the entrance, plaques point out some history including "A.D. 1900" over the entrance.
There is no toll to pass through the tunnel and it seemed quite busy with traffic including a number of (single-deck) city bus lines.
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