50+ Years Providing A High-Quality Service

INFRASTRUCTURE

UNDERPINNED BY TRUST

O’Halloran & O’Brien provides end-to-end infrastructure solutions that connect communities and support development at every scale. Our expertise spans highways, drainage, utilities, and public realm works - delivered safely, efficiently and to the highest quality standards. Through early collaboration and a focus on buildability, we help clients achieve cost and programme certainty across complex infrastructure environments.

HIGHWAYS & ROADS

+

We deliver new road construction, realignments, junction improvements and surfacing works, ensuring safe integration with existing networks and minimal disruption to the public..

DRAINAGE & UTILITIES

+

Our teams undertake deep drainage, service diversions, attenuation systems and utility corridors, coordinating with statutory providers to ensure safe, compliant and efficient installation.

PUBLIC REALM & HARD LANDSCAPING

+

From footpaths and cycle routes to paved public spaces and landscaped plazas, we deliver durable, high-quality finishes that enhance the built environment and create long-lasting value.

OUR INFRASTRUCTURE CAPABILITY

+

With decades of experience in civil engineering and an extensive in-house plant and logistics network, O’Halloran & O’Brien delivers infrastructure works with precision, reliability and care. Our consistent focus on safety, sustainability and collaboration ensures every project contributes to stronger, better-connected communities.