Constuction starts on North Rangitikei Railway Bridge

At 81m high, the North Rangitikei Railway Bridge is the second highest railway viaduct in New Zealand. Beca was responsible for the design, preparation of contract documents and site supervision for this unique three-span, balanced cantilever bridge found on the Mangaweka railway deviation in the centre of New Zealand’s North Island.


The prestressed concrete bridge was designed as a box girder and spans 110 metres across a gorge – the longest span of any rail bridge in New Zealand. The design also includes a high proportion of horizontal mild steel in the columns, providing ductility to help resist the seismically induced forces, and sustain the relative displacements of the riverbanks, that might occur in a major earthquake. Construction of the bridge started in 1973 and was completed in 1981.

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