Transportation Engineering

making every journey safer - for everyone, every day

We design smart, safe and reliable transport solutions—working closely with communities, clients and partners to make every journey better.

People using public transport such as busses

We offer:

  • Traffic Impact Assessments

  • Permanent & Temporary Traffic Solutions

  • Public Transport Infrastructure Improvements

  • Speed Limit Changes & Assessments

  • Intersection Design

  • Management, Surveillance and Quality Assurance

  • Road / Parking and Access Layout Reviews

  • Road & Vulnerable Safety User
    Concepts Investigation

  • Safe System Audits

People using public transport such as trains

Our Projects:

Roundabout linked to highway to help ease congestion

Coatesville Riverhead Roundabout: Safety Meets Smart Design

Carrying over 15,000 vehicles a day and ranked as Auckland’s 5th most dangerous intersection, the junction of Dairy Flat and Coatesville Riverhead Highways was crying out for a safer solution.

Blue Barn was engaged by Auckland Transport to deliver the detailed design of a 27-metre diameter roundabout — improving safety, reducing conflict points, and making the intersection far more user-friendly for rural drivers.

With seven retaining walls and tight site constraints, the final design required precision geometric design to meet safety and performance standards. The result? A safer, smarter intersection — designed to save lives.

Client referral
Intersection with traffic lights with improved signaling

Burundi x Roscommon: Safer Streets, Smarter Design

Blue Barn played a key role in transforming the busy Burundi Avenue and Roscommon Road intersection into a safer, signalised crossing — delivering detailed design and construction support alongside Auckland Transport’s MSQA team.

The project focused on improving safety for both pedestrians and drivers, especially for those turning into and out of Burundi Avenue. The new layout and signalised controls have created a smoother, more predictable intersection — making a big difference for the local community.

Smart infrastructure, safer outcomes — that’s what we’re here for.

Urban roundabout design to improve traffic congestion

Avoca x Advene: A Smart Solution for a Growing Community

To keep pace with rising traffic volumes and improve safety, a new urban roundabout was the clear choice for the Avoca/Advene intersection.

Using Civil 3D, our team modelled and tested multiple scenarios to fine-tune the design — ensuring it would perform seamlessly in real-world conditions. The final result? A well-integrated, future-ready roundabout that reduces congestion, improves traffic flow, and makes the intersection safer for everyone who uses it.

Smart tools, thoughtful design, better journeys.

Getting people moving