Eastbridge has recently completed one of the most challenging jobs in its 50 year history: the construction and installation of 56 tonne girders across the Waikato River.
The new Ngaruawahia Bridge across the Waikato River was a large and challenging project for Eastbridge Ltd, and involved:
800 tonnes of structural steel, 56 tonne girders, believed to be the largest ever made in New Zealand. Use of an American Sky Horse crane for the heavy lifts. A challenging 56.5 tonne lift at an impressive 45m radius, A61 tonne lift at 27m radius
The huge girders are the largest the Napier based company has ever built and posed significant challenges for the engineering team.
However, considering Eastbridge specialised in the supply of steel bridges and has built many of New Zealand’s largest bridges, it was the perfect company for the job.
Ngaruawahia Bridge Project.
General Manager Andre van Heerden says Eastbridge recently completed its structural steel work on the 140m highway bridge across the Waikato River south of Ngaruawahia – part of the $150 million Ngaruawahia section of the Waikato Expressway. The bridge crosses the river about 400m upstream of the existing Horotiu Bridge.
The new bridge includes 800 tonnes of structural steel and has four distinctive V piers with beams built in three stages to span the river. Concrete pre-cast panels were then fitted across these and the final concrete deck and barriers added.
Under leadership from main contractor Fletcher Construction, Eastbridge supplied all the structural steel for the project. Fletcher Construction was appointed b the NZ Transport Authority for the Ngaruawahia section of the Waikato expressway.
Andre van Heerden says the 56 tonne steel girders involved in the project are believed to be the largest girders ever built in NZ. "It's quite a significant project and it was pretty challenging because of those girders" he says.
"It was an average job for us in terms of tonnage, but the physical properties of the bridge and the size of the girders is unique and large."