The Makatote Viaduct, KiwiRail New Zealand

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Makatote Viaduct KiwiRail New Zealand
Trains 225 & 240 On The Makatote Viaduct, August 2020
The Makatote Viaduct takes the North Island Main Trunk railway across the Makatote River. It is 335.7 km from Wellington, at the foot of Ruapehu, in northern Manawatū-Whanganui, between Erua and Pokaka.
Designated as world heritage site: 20 February 2009
#Constructionstarted:1905
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Opened in 1908, this Viaduct (Bridge 179) takes the Main Trunk across the Makatote Stream in the heart of the North Island. It is New Zealand's third highest bridge at 79m

Train 225 (Auckland to Wellington) was hauled by locomotives DFB 7023 & DL 9262

Train 240 (Wellington - Auckland) had DL class locos 9360 & 9377 towing 9147 and 25 wagons. The total length of the train was 470m with a weight of 976 tons.

Makatote Rail Viaduct Life Extension Project Ohakune & National Park, New Zealand.

The Makatote railway viaduct is located between Ohakune and National Park in the Central North Island and is a critical link in the North Island Main Trunk Line in New Zealand.

The last full repaint of the viaduct was carried out during the 1950’s with subsequent touch ups completed in the 1990’s. The life extension project was the first full refurbishment of the steel structure in 60 years. The scope of the project included:

the design, build and installation of a complex access and containment system that could be moved along the structure as work progressed;
removal, containment and disposal of the existing lead-based coatings system;
replacement of heavily corroded steel components;
strengthening of the steel trusses with the addition of new steel components; and
application of a new red oxide coating to restore the viaduct to its original form.

The project involved approximately 127,000 man hours, requiring a crew of up to 30 people on site throughout the duration the works. This was a logistically and operationally challenging project, particularly with respect to access and containment of the structure, the unforgiving nature of the climate and the ongoing demands of working over a highly sensitive environment that was home to a number of endangered species.

A specialised access and containment system was designed and developed for the project consisting of hanging scaffold and a pier access system. Strict controls were developed and incorporated into all project activities to ensure that the works do not impact upon the local environment.

In addition to this, KiwiRail initiated and funded a stoat trapping programme to be administered during the course of the works in an effort to further enhance the local bird population in the area. The project programme and the coatings system were designed with the difficult climatic conditions of the site in mind which allowed painting to continue throughout the year.

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