Civil and Structural
 Consulting Engineers

Bridge 50 ECMT

  • Bridge 50 ECMT
  • Bridge 50 ECMT
  • Bridge 50 ECMT
Bridge 50 ECMT1 Bridge 50 ECMT2 Bridge 50 ECMT3

Key Project Details

Description

Client

KiwiRail
 

Contractor

Downer
 

Project Value

$2.0 million
 

Duration

Design work commenced in 2011 and construction was completed mid 2012.
 

Challenges

Undercutting soft material beneath the existing bridge and maintaining rail operations.  Designing the replacement culvert structure to be constructed beneath the bridge as well as allowing for propping and temporary retaining installation.
A large culvert structure was selected as the most cost effective replacement of the aging timber piers and steel span bridge known as Bridge 50 ECMT.

On the edge of the coastal marine Tauranga Harbour area, the East Coast Main Trunk Line (ECMT) carries a significant volume of rail freight traffic and construction activities were required to be designed for minimal disruption and in consideration of managing potential adverse environmental effects. Construction utilised off site precasting and post tensioning of culvert sections together beneath the existing bridge.

As part of the approach works to the culvert, KiwiRail required the existing formation to be widened for curve easing to improve train speed through this section of the line and the extension of a rail passing loop. Soft material was removed and the new rail formation constructed with geogrid strengthening for support.

The culvert was designed to support future double tracking of the ECMT by having sufficient length to support two tracks should KiwiRail decide to extend the current passing loop in the future.

About Novare Design

Novare Design is a New Zealand based company of civil and structural engineers providing superior service nationally and throughout Asia and the Pacific. We pair innovation with experience to provide a professional yet personalised service for our clients needs. Our expertise includes the buildings, bridges, civil and infrastructure sectors. Novare Design has gained an enviable reputation for delivering solutions that exceed our client's expectations.

 
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We provide local and international civil and structural design consultancy services to our clients, specialising in buildings, bridges, civil and infrastructure projects. 

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