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Walk or ride from Beacon Hill to St Ives on a $7m path alongside a historic water pipeline

Authorities are making use of land alongside a 90-year-old Sydney water pipeline for bike riders and walkers on the northern beaches.

An artist's impression of the Pipeline Active Transport Corridor, a $7.2m shared path to run adjacent to the Sydney Water pipeline on a stretch from Beacon Hill to St Ives. Picture: Supplied
An artist's impression of the Pipeline Active Transport Corridor, a $7.2m shared path to run adjacent to the Sydney Water pipeline on a stretch from Beacon Hill to St Ives. Picture: Supplied

Work has stated on a $7.2 million shared walking and cycling path on the northern beaches that will follow the corridor of a historic above ground Sydney Water pipe.

With the official name — Pipeline Active Transport Corridor — the trail will cut through bushland and reserves stretching more than 9km from Beacon Hill through to St Ives, on the North Shore.

It will follow the corridor created for the Manly Warringah water supply pipeline that opened in 1930.

The pipeline, which can be seen in multiple locations at Beacon Hill, Frenchs Forest, Belrose and Davidson, runs from Pymble Reservoir to Dee Why.

To minimise costs, most of the pipeline was laid above ground on concrete saddles on Crown land.

The Pymble-Warringah Main under construction prior to its opening in 1930. Picture: Manly, Warringah and Pittwater Historical Society
The Pymble-Warringah Main under construction prior to its opening in 1930. Picture: Manly, Warringah and Pittwater Historical Society

It only plunges underground when it has to go under public roads. The internal diameter of the pipeline is 76.2cm.

Now Northern Beaches Council and Transport for NSW are taking advantage of the land corridor, already popular with walkers, joggers, dog walkers and mountain bikers.

In August 2019, the council voted unanimously to support Liberal councillor Stuart Sprott’s motion to chase grants from the NSW Government, and work closely with Sydney Water, to build a shared path along the pipeline.

A section of the Sydney Water pipeline, siting on its concrete “saddles”near Ethie Rd, at Beacon Hill. Picture: Jim O'Rourke
A section of the Sydney Water pipeline, siting on its concrete “saddles”near Ethie Rd, at Beacon Hill. Picture: Jim O'Rourke

Cr Sprott said it could become a “urban trail” connecting Frenchs Forest, the Warringah Aquatic Centre, the new The Forest High School site at Allambie Heights and Beacon Hill.

The council said the trail would provide walkers and cyclists with a wider, safer way to travel between suburbs.

Starting at Ethie Rd, Beacon Hill, the corridor connects the northern beaches with the Ku-ring-gai Council local government area.

Northern Beaches Mayor Michael Regan said it would encourage healthier, more environmentally friendly transport options.

A section of the Sydney Water pipeline between Beacon Hill and Allambie Heights that is popular with dog walkers. Picture: Jim O'Rourke
A section of the Sydney Water pipeline between Beacon Hill and Allambie Heights that is popular with dog walkers. Picture: Jim O'Rourke

“The active transport corridor will provide wider and safer walking and cycling routes for the growing area of Frenchs Forest and connect the northern beaches to the Ku-ring-gai Council local government area,” he said.

“We know northern beaches residents are seeking more active transport options to beat traffic, maintain healthy, active lifestyles and choose more sustainable transport options.

“Imagine a future where you leave the car at home, avoid parking and congestion, and enjoy a healthier, calmer commute to work or school on foot or bike.”

The project will be completed in eight stages.

A section of the Sydney Water pipeline above ground near Mortain Ave, Allambie Heights. Picture: Jim O'Rourke
A section of the Sydney Water pipeline above ground near Mortain Ave, Allambie Heights. Picture: Jim O'Rourke

Work has already started on “Section six” from Bantry Bay Rd at Frenchs Forest to Warringah Rd, via Rangers Retreat Rd Reserve, and the Sydney Water pipeline. This stage is expected to be complete in early 2023.

The council was also looking into “low-intensity, solar-powered and wildlife-friendly” lighting along the corridor.

The project is proudly funded by the NSW Government Places to Roam – Regional Trails Program to improve active transport on the Northern Beaches. Council will work with Ku-ring-gai Council to complete the works to St Ives.

A map of the Pipeline Active Transport Corridor, a $7.2m shared path to run adjacent to the Sydney Water pipeline on a stretch from Beacon Hill to St Ives. Picture: Supplied
A map of the Pipeline Active Transport Corridor, a $7.2m shared path to run adjacent to the Sydney Water pipeline on a stretch from Beacon Hill to St Ives. Picture: Supplied

THE TRAIL – SECTION BY SECTION

Section 1 – Ku-ring-gai

Falls within Garigal National Park and Ku-ring-gai Council area. Currently an unsealed access road accessible by mountain bikes and bush walkers.

Approx length of 2350m from Hunter Ave to Middle Harbour Creek via the pipeline trail.

This is part of shared works between Ku-ring-gai Council and Northern Beaches Council which is currently unfunded.

Section 2 – Middle Harbour Creek Bridge

Creek crossing at Middle Harbour Creek. Currently no access across creek at this location. Bushwalking track to “stepping stone” creek crossing located approx. 800m upstream. Potential for a lightweight bridge to be installed.

Approx length of 40m from Middle Harbour Creek to Middle Harbour Creek via Middle Harbour Creek Bridge.

This is part of shared works between Ku-ring-gai Council and Northern Beaches Council which is currently unfunded.

The Pymble-Warringah Main under construction. Picture: Manly, Warringah and Pittwater Historical Society
The Pymble-Warringah Main under construction. Picture: Manly, Warringah and Pittwater Historical Society

Section 3 – Davidson Trail

Falls partly in Garigal National Park. Partly sealed with rough asphalt or corrugated concrete with very steep gradients. Popular for bushwalking and used by mountain bikes.

Approx length of 40m from Middle Harbour Creek to Middle Harbour Creek via Middle Harbour Creek Bridge.

This is part of shared works between Ku-ring-gai Council and Northern Beaches Council which is currently unfunded.

Section 4 – Prahan Ave

Section mainly consists of a wide grass access track alongside pipeline. Currently used mainly for recreational walking.

Approx length of 1010m from John Oxley Dr to John Oxley Dr via Prahran Ave.

Section 5 – Frenchs Forest West

Section mainly consists of unsealed or grass access road alongside pipeline. Currently used mainly for recreational walking.

Approx length of 1580m from John Oxley Dr to Warringah Rd using existing unsealed pathway.

Section 6 – Bantry Bay

Part unsealed access track, part sealed access road. Route diverts from Pipeline to allow more direct route to existing Wakehurst Parkway overbridge.

Approx length of 1580m from Bantry Bay Rad, via Rangers Retreat Reserve and pipeline to Warringah Rd.

Section 7 – Manly Dam

Unsealed access track alongside pipeline. This section of track is very popular with mountain bikers and walkers. Corridor forms part of the area’s informal mountain bike network.

Approx length of 1400m from Wakehurst Parkway to Allambie Rd via Manly Dam bike trail.

Section 8 – Allambie Heights

Grass verge alongside pipeline. Generally used by walkers and mountain bikers.

Approx length of 650m from Allambie Rd to Ethie Rd, Beacon Hill via pipeline.

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Original URL: https://www.dailytelegraph.com.au/newslocal/manly-daily/walk-or-ride-from-beacon-hill-to-st-ives-on-a-7m-path-alongside-a-historic-water-pipeline/news-story/144330ad5168e476cb0b7ec5a3e5664c