Featured Projects

Bellwether Consulting Services recently supported Transgrid with independent estimating services for critical infrastructure renewal works in regional New South Wales. The engagement involved the development of an independent cost assessment to support project planning, delivery considerations, and investment decision-making within a live operational environment. Drawing on our experience across energy and major infrastructure projects, Bellwether provided practical, delivery-focused estimating expertise, including consideration of construction methodology, brownfield constraints, market conditions, and project delivery risks.  

Bellwether delivered a technically complex pipeline upgrade for Cassowary Coast Regional Council, installing HDPE, stainless steel and ductile iron pipelines across above and below-ground environments to strengthen regional water infrastructure. The works included 120 m of DN355 white-jacket HDPE pipe mounted beneath the bridge deck on custom stainless steel brackets and saddles, 75 m of below-ground DN355 HDPE pipe, and stainless steel thrust restraints with rubber bellows to manage hydraulic forces at key expansion points. Four 2.45 m-high thrust blocks were cast in situ within confined working space, and live tie-ins to the existing water main were completed at both abutments with minimal disruption to community water supply. The project required onsite redesign at Abutment A to address existing conditions that deviated from the design drawings, careful sequencing around seasonal weather, and strict safety controls for elevated works on the bridge structure. The completed pipeline provides Cassowary Coast with a more resilient and future-ready water connection, reflecting Bellwether's technical capability across multiple pipe materials and site conditions.

Bellwether Contractors was appointed Principal Contractor by the Department of Transport and Main Roads to deliver safety upgrades across two adjoining sections of Gatton–Helidon Road at Grantham, spanning 6.7 kilometres of critical regional corridor linking the Lockyer Valley to the Warrego Highway.

The project's objective was to widen and strengthen the pavement, upgrade drainage and improve safety for a corridor carrying more than 11,000 vehicle movements a day, including significant heavy vehicle and freight traffic.

The team worked in the unique and infamous Darling Downs Vertisol soil environment. A highly reactive clay that is excellent for growing vegetables, but far less suited to building roads, and one of the most geotechnically demanding subgrade materials encountered in civil construction anywhere in the world. These conditions were further complicated by above-average rainfall through late 2024 and early 2025, alongside strong stakeholder and community engagement throughout, with the road remaining open to live traffic at all times.

Despite these challenges, the project team worked collaboratively with the Department of Transport and Main Roads, adopting drone aerial survey and robotic linemarking technology to overcome the site's complexities. The result was Practical Completion delivered 27 days ahead of the revised programme, zero Lost Time Injuries across the 14-month delivery, and a positive outcome for the client, the local community and Bellwether Contractors.

Bellwether Contractors was engaged by the City of Moreton Bay to deliver the upgrade of the Sparkes Road / Ellis Street / Francis Road intersection in Lawnton, a critical safety and congestion relief project for one of the region's busiest local corridors.

As population and traffic volumes grew across Moreton Bay, the existing roundabout had reached capacity, creating delays and safety risks for motorists, cyclists and pedestrians. The upgrade replaced the roundabout with a signalised intersection, improving traffic flow, accessibility and safety for all road users.

Bellwether delivered the full civil works package, including demolition and reconstruction of the existing roundabout, construction of new signalised intersection infrastructure, road widening and new turning lanes, pedestrian crossings and cycle lanes on all approaches, and upgraded lighting, drainage and landscaping. The works were staged to minimise disruption for local residents, schools and commuters, with underground service relocations carefully managed throughout.

Bellwether's delivery team applied the same disciplined project management and stakeholder engagement approach used across its major infrastructure programmes, ensuring certainty of scope, cost and time. The completed intersection now delivers safer travel, reduced delays and better access for residents and businesses, supporting the continued growth of the Lawnton and Bray Park area.

Bellwether Contractors delivered the Alma Road, Dakabin Bend Upgrade for the City of Moreton Bay, replacing the existing bend near 140 Alma Road with a new three-leg roundabout, with the works now nearing completion.

The upgrade was designed to improve traffic efficiency and sightlines, enhance safety for pedestrians, cyclists and motorists, and better accommodate current and forecast traffic volumes as one of the fastest-growing regions in the nation continues to grow.

Delivering infrastructure in dense urban environments brings inherent complexity, and communities need certainty that projects will be delivered despite these challenges. This project continued Bellwether's long-standing collaboration with the City of Moreton Bay, supporting practical, community-focused infrastructure that responds to both technical requirements and local needs — improving safety and accessibility on local roads that underpin connected, growing communities.

Bellwether Consulting Services is proud to have been invited by Bluescope to develop a first principles estimating guide for the supply and fabrication of typical I-Girder and Box-Girder sections made from G300, G400, WR350 and WR400 REDCOR® weathering steel grades as referenced in the Composite Bridge Guide. Working closely with BlueScope, Bellwether developed this estimating aid, which provides comprehensive material and labour estimates for the supply and fabrication of typical I-Girder and Box-Girder sections, to provide cost clarity in the early stages of bridge design.  

Bellwether Consulting Services was engaged to support a tier one designer and the Department of Transport and Main Roads (TMR), delivering strategic estimating services for the Bruce Highway / Walker Street Intersection Safety Improvements project. Following a tragic incident in March 2024 and subsequent coroner recommendations, the intersection was identified as a priority for infrastructure upgrades. Bellwether ensured all options were evaluated with precision and transparency to inform a robust Multi-Criteria Analysis (MCA). Bellwether delivered cost estimates across five intersection upgrade options, including:

• Detailed Probabilistic Cost Estimates
• Construction Schedule
• Escalation and P50/90 Risk Adjustments
• Supporting Risk Workshops

Bellwether Consulting Services  was engaged to provide independent cost estimating services for the Lester Kropp Bridge Replacement on behalf of Somerset Regional Council. Delivered in regional Queensland, the project involves replacement of the ageing single-lane bridge with a modern two-lane crossing over the Stanley River, improving safety, resilience and connectivity between Villeneuve and Mount Archer. Working alongside Hatch during the concept, detailed design and construction phases, Bellwether supported Council’s staged delivery approach, providing transparent, delivery-aligned cost insight to inform design development and strengthen cost confidence prior to and during construction. This project reinforces Bellwether’s capability to support critical regional infrastructure through early cost certainty and informed decision-making.  

Bellwether Contractors is proud to have delivered the Recreation Facility Upgrade at Wuruma Dam on behalf of Sunwater.

Delivered in regional Queensland, the project involved a substantial refurbishment of the campground, dam wall and lookout areas, improving accessibility, safety and visitor experience while supporting long-term community use of this popular destination.

Working closely with local contractors, suppliers and workforce, Bellwether managed construction activities across multiple work fronts, delivering upgraded public amenities in line with the agreed program and quality objectives.

This project forms part of a broader Queensland Government program to enhance recreation areas at key dams and weirs across the state, reinforcing Bellwether’s capability to deliver practical, community-focused infrastructure in regional environments.

The Wacol Water Infrastructure Project was a vital upgrade to secure the drinking water supply for key government facilities in Wacol, including West Moreton Health, Queensland Police Services, and Wacol Correctional Facilities. Bellwether  Contractors delivered the project in two coordinated stages, transferring water supply responsibility from Queensland Health to Urban Utilities (UU) and replacing aging, non-compliant infrastructure with modern, reliable assets.