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Bridge Solutions

Engineered Retaining Systems for Bridge Infrastructure

Stone Strong® precast concrete retaining wall systems provide engineers and contractors with a robust, efficient, and cost-effective solution for bridge infrastructure projects. From bridge abutments and wing walls to approach embankments and grade separation structures, Stone Strong delivers proven performance while reducing construction time and site disruption.

The system combines the structural advantages of large-scale precast concrete with flexible design options, making it suitable for both temporary and permanent bridge applications across transport, rail, commercial, and civil infrastructure projects.

Bridge Abutments

Stone Strong bridge abutments offer a practical alternative to traditional cast-in-place concrete structures. The modular precast system enables rapid construction while providing the strength and durability required to support bridge loads and approach embankments.

Key Benefits

  • Reduced construction programmes through off-site manufacturing
  • Minimal site preparation and formwork requirements
  • Excellent load-bearing performance
  • Adaptable to a wide range of bridge geometries
  • Reduced labour and equipment requirements
  • Suitable for road, rail, pedestrian, and shared-use bridges

Stone Strong abutments can be integrated with reinforced soil systems such as ParaWeb® to create mechanically stabilised earth (MSE) structures capable of supporting significant bridge loads while accommodating challenging site conditions.

Gravity Bridge Abutments

For sites with suitable foundation conditions, Stone Strong gravity bridge abutments provide a simple and highly effective structural solution.

Utilising the mass and interlocking characteristics of large-format Stone Strong blocks, gravity abutments resist earth pressures through their own weight, eliminating the need for extensive reinforcement in many applications.

Advantages

  • Simplified design and construction
  • Reduced excavation requirements
  • Faster installation compared to cast-in-place alternatives
  • Cost-effective for low to medium-height structures
  • Durable precast concrete construction
  • Easy integration with wing walls and retaining structures

Gravity abutments are particularly well suited to rural bridges, pedestrian crossings, temporary bridge installations, and projects where rapid construction is critical.

MSE Bridge Abutments

Mechanically Stabilised Earth (MSE) bridge abutments combine Stone Strong facing units with engineered reinforcement systems such as ParaWeb® polyester straps.

This approach creates a reinforced soil mass capable of supporting substantial bridge loads while providing excellent flexibility and seismic performance.

Why Choose MSE Abutments?

  • Reduced foundation loads compared to conventional concrete structures
  • Improved performance on variable ground conditions
  • Excellent seismic resilience
  • Cost-effective for large bridge approaches
  • Reduced concrete quantities
  • Rapid construction and programme certainty

MSE abutments have been successfully used on major transport and rail infrastructure projects throughout New Zealand and internationally, providing long-term performance under demanding operating conditions.

Rail Bridge Applications

Stone Strong systems are widely used in rail infrastructure projects where durability, construction efficiency, and seismic performance are critical.

Applications include:

  • Rail overbridge abutments
  • Retaining walls adjacent to rail corridors
  • Grade separation structures
  • Embankment stabilisation
  • Bridge approach support

The flexibility of Stone Strong and ParaWeb reinforced systems allows walls to be positioned outside rail impact zones, often reducing the need for additional protection structures while maintaining compliance with rail design requirements.

Bridge Wing Walls

Stone Strong wing walls provide an efficient solution for retaining bridge approaches and managing transitions between bridge structures and adjacent embankments.

The modular nature of the system allows wing walls to be constructed at varying lengths, heights, and angles to suit project requirements.

Features

  • Compatible with both gravity and MSE abutments
  • Accommodates complex bridge geometries
  • Rapid installation
  • Consistent architectural appearance
  • Reduced construction disruption

Seismic Performance

New Zealand infrastructure demands retaining wall systems capable of performing under significant seismic loading.

Stone Strong MSE structures provide inherent flexibility that allows the reinforced soil mass to absorb and dissipate seismic forces more effectively than rigid concrete structures. This can result in improved resilience and reduced long-term maintenance requirements.

Benefits

  • Flexible structural behaviour
  • Reduced differential settlement risks
  • Enhanced energy dissipation during seismic events
  • Proven performance in transportation infrastructure projects

Why Engineers choose Stone Strong for Bridge Projects

Faster Construction

Proven Structural Capacity

Design Flexibility

Reduced Whole-of-Life Costs

Local Expertise

Contact Us

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HEAD OFFICE

PO Box 31 288, Milford, Auckland 0240

0800 820 8070

engineering@stonestrong.co.nz

SOUTH ISLAND – STONE STRONG CANTERBURY LTD

Timaru Block Yard / Display
56 Main South Road, Timaru
South Caterbury

Contact

Steve Fraser
0800 820 8070