First beams placed on SH1 overbridge

First beams are placed

The team took advantage of the SH1 closure last week to place the first beams on the future SH1 overbridge. 

The new bridge is 1 of 6 connecting Whangaparāoa to SH1 creating a more resilient network, getting people where they need to be faster, while supporting economic growth in the region and connecting people to new housing developments in the region. It has been future-proofed to allow for SH1 to be widened in the future.

In total 6 beams (Super T Girders) will be placed across the highway, the last 2 will be installed this week. Each beam is 34.5 metres long and weighs around 68 tonnes,  requiring a 600 tonne crane to lift them into place!

Weiti River bridge piers are growing

What’s happening in April

State Highway 1 and Ara Weiti Road

Earthworks will continue on both sides of SH1 and along Ara Weiti Road, as well as drainage pipe installation along the new alignment.

Now the beams have been lifted onto the SH1 overbridge, we will be pouring concrete to construct the bridge deck later this month. We are also starting to construct a retaining wall at Link Road 2 where Bridge 4 will tie into Ara Weiti Road,  and a MSE wall for the bridge abutments at Link Road 1. 

The team are conducting a pavement trial which will inform how we construct the pavement layers on the entire project.