Narellan Road Upgrade Project

South Western Sydney - Improving safety and quality of life for commuters.

50m

span

Improved

commuter safety
Narellan Road Upgrade_Bridge

Narellan Road is a key road corridor servicing south western Sydney that is predicted to grow significantly in coming years. To ensure safety and quality of life for commuters and residents,  Arcadis was appointed by RMS to provide detailed design services for the Narellan Road Upgrade Project. This required the construction of a new shared path bridge over the Hume Highway, providing connectivity for pedestrian and cyclists between Narellan and Campbelltown.

The shared path bridge was designed as a single pylon asymmetric cable stayed bridge with a steel ladder type deck and a reinforced concrete topping slab. With a main span of just under 50m, the bridge is supported on two permanent concrete piers with a fanned arrangement of cables.

The original construction methodology included the use of temporary towers in the median of the Hume Highway however this option was removed and construction was required to span the width of the Hume Highway. To suit these new constraints, Arcadis worked with RMS and the bridge contractor Seymour Whyte to develop a bespoke segmental cantilever erection methodology. The new construction methodology required the bridge to be re-analysed to determine the initial deck geometry, cable lengths and tensioning forces.

This work demonstrates Arcadis’ ability to work collaboratively with clients and contractors to develop designs to suit site specific construction methodologies. Arcadis is continuing to work in a Construction Phase Services Role to provide RMS with technical advice throughout the construction of the bridge.

Outcomes

50m

span

Improved

commuter safety

1

new shared path bridge

Questions about this project

Jarrod Hitchcox

Business Leader - Civil Structures NSW +61 (0) 2 8907 3967 Ask me a question
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