The Newmarket Viaduct Replacement Project is nearing completion. Thank you for your support during the four years of this project from 2008 to 2012.
The Dilworth footbridge across the rail line and motorway between Mt Hobson Rd and Mauranui Ave is in the process of being replaced. Here are two artist impressions of what the new bridge will look like when it is completed in early October 2012.
The 1.5m 'wing extension' currently being attached to the south western edge of the new northbound bridge is shown in light grey on the right of the picture below. It is being added in stages as the gantry moves south deconstructing (removing) the old northbound viaduct.
The new northbound viaduct could not be built to its full width while the old northbound viaduct was still in use because the two structures would have overlapped. When finished, the structure will be a solid platform 30m wide, and the new northbound lanes will be achieve their full width.
Now that northbound traffic has been moved onto the new northbound structure, the old northbound lanes arebeing removed (Stage 4), to ultimately reveal a brand new Newmarket Viaduct, standing approximately 15 metres to the north-east of where the original structure has stood for the last 50 years.
The opening of the new northbound viaduct in January 2012 was the third stage of works to entirely replace the viaduct in four stages of construction and deconstruction. Stage 1 saw the first half of the new viaduct built immediately adjacent to the old southbound lanes - and southbound traffic is now travelling across this new structure. While northbound traffic continued to use the old structure, the old southbound lanes were removed through stage 2 of the project to make way for the new northbound lanes, which have been built in the vacated space (Stage 3).
The new viaduct addresses a number of seismic, safety and environmental limitations that were inherent in the old structure, creating a more secure life-line to Auckland’s south and imposing less of a footprint on the Newmarket community beneath.