SH25/SH25A Thames-Coromandel

9 October 2023

View from abutment D

SH25A Taparahi - first bridge beams arrive on site

The team received a big delivery last week – arriving on site were the first 2 sets of the bridge steel beams (girders). These range between 18, 29 and 30 metres long and weigh approximately 20 tonnes each. On site they will be spliced together to form the base of the bridge deck - for the first span (it’s a 3-span bridge).

Soil nailing and mesh installation are ongoing – crucial work that is stabilising the slip face and helps to contain any potential debris from falling (see image below – left).

Have a look below to see what other activities were achieved last week:

Abutment A: The team continue to tie the steel reinforcement for the wingwall, with the concrete pour due this week (see image below – right).

Abutment D: The first section of the headwall and plinths were poured last week, and the team will now start tying the steel reinforcement for the wingwalls.

Pier B: Completed and ready for the installation of the bridge beams (girders).

Pier C: The headstock was completed, and the plinths will be poured this week. This will mark the completion of Pier C ready for the bridge beam installation.

Offsite: 12 of 15 bridge beams have been delivered to site with the final 3 due to arrive next week. The concrete pre-cast panels and pre-cast barriers continue to be fabricated.

Ever wondered why we do roadworks in summer?

To keep our roads safe and accessible, Waka Kotahi has an an annual maintenance programme of resurfacing and rebuilding across the state highway network each summer - this includes the Coromandel.

Our maintenance season has started and we have a steady programme of work to get through.

You can view the Waka Kotahi 2023/2024 road works season here.

If you have ever wondered why we do it every summer, take a look at roadworks 101.

If you’re out on the road, keep an eye out for traffic management and crew who are doing pre-sealing repairs. Other areas you can expect to see traffic management include:

Tairua bridge with scaffoding while work is carried out to strengthen the bridge.

SH25A bridge strengthening

While SH25A is closed we're working through a programme of work so it can be completed ahead of the reopening of the state highway. This includes strengthening 7 bridges.

Our contractor is established at 5 sites along SH25A. Traffic management is in place which includes a 30km/h temporary speed limit and lane closures when scaffold is installed or removed. Work on the final 2 sites is expected to get underway soon which are on the western side (Kōpū).

More information

If there's something you'd like to know more about, or you have a question, we'd love to hear from you. Contact us at coromandel@nzta.govt.nz and we'll include the answers in upcoming issues.

Visit our website www.nzta.govt.nz/thames-coromandel

SH25A project information sheet