Project purpose
NZTA is strengthening the Auckland Harbour Bridge box girders (clip-ons) to keep them in good condition and extend their life.
Benefits
- The ongoing maintenance and monitoring NZTA carries out on the bridge means that the clip-ons are stronger than ever.
- The daily average number of cars crossing the Auckland Harbour Bridge is presently around 165,000, with more than 200,000 vehicle crossings recorded some days.
- Current improvements to the Auckland Harbour Bridge clip-ons (box girders) will ensure they stay in good condition for the next 30 to 40 years.
Features
- One of the most strategically important bridges in New Zealand, the Auckland Harbour Bridge is also one of the best maintained bridges in the world.
- The 50 year old bridge is no stranger to upgrades and facelifts.
- In the last eight years alone, NZTA has undertaken annual, six and three month inspections together with daily monitoring, painting and other maintenance.
- The current improvements involves fixing hundreds of tonnes of steel to the inside and outside of the box girders by welding and bolting.
- Strengthening commenced in August 2008 on the northbound box girder.
- Initial strengthening was completed in July 2008. Works switched predominantly to the southbound clip-on on 2 August 2009.
