Did you know? The next railway walk near Bukit Timah will not follow the famous north–south Rail Corridor. It traces another disused line: the Old Jurong Line, which once carried goods between Jurong and the wider rail network. Its future trail through the Clementi landscape connects a heritage story with a much bigger ecological question.
Quick answer, checked 24 October 2026: NParks has described an 18km recreational network for the Clementi Nature Corridor, including an approximately 4km Old Jurong Line Nature Trail and a separate Clementi Nature Trail. A 2024 update said the old-line trail would progressively open from the end of 2026. But do not interpret a projected phased opening as confirmation that the entire trail is ready in October 2026. See NParks’ original route description and URA’s 2026 recreation update.
A section of the Clementi Nature Trail along Holland Green Linear Park is already open, according to the 2026 NParks visitor page. That is a different, existing part of the wider green network. This distinction is essential for anyone planning a 2026 walk or wondering what additional connections may become usable through 2027.
Where does the Old Jurong Line fit?
Singapore’s better-known Rail Corridor follows the old north–south railway from the city towards Woodlands. The Old Jurong Line served a different historic purpose: moving freight associated with Jurong’s industrial era. Remnants of tracks and railway bridges offer glimpses into that past.
URA’s June 2026 recreation guide describes the Old Jurong Line Nature Trail as a route following the former railway alignment through the Clementi area. Its first phase is intended to link with the Ulu Pandan Park Connector. Together with the Clementi Nature Trail, it will help connect people back towards the Rail Corridor.
This is why the Old Jurong Line matters to Bukit Timah even when some segments run through neighbouring Clementi. Nature and walking networks do not obey the tidy boundaries of a postal district. They connect homes, schools, green spaces and habitats across a much wider landscape.
There are several routes—not one giant trail
- Old Jurong Line Nature Trail: a planned approximately 4km nature-and-railway-heritage route following parts of the old industrial railway alignment.
- Clementi Nature Trail: a separate proposed trail connection associated with the Clementi Forest stream and Bukit Timah First Diversion Canal; an initial section along Holland Green Linear Park is open.
- Jurong Town Hall Park Connector: another planned link supporting a broader connection towards Jurong Lake Gardens.
- Existing Rail Corridor: the older north–south green spine with its own access points and any temporary closure notices.
- Wider Clementi Nature Corridor: an ecological landscape linking forested sites at Clementi, Toh Tuck and Maju with the Rail Corridor—not simply a single continuous walking path.
What changes from 2026 into 2027?
NParks’ initial announcement proposed a progressively delivered recreational network. URA’s 2026 material continues to describe the Old Jurong Line Nature Trail and its first-phase connection, so the project remains part of the planning picture. The exact opening of every segment should be checked against a newer, dated official notice rather than inferred from early targets. Review the current URA outline.
A confirmed point of progress in 2026 is the initial Clementi Nature Trail section at Holland Green Linear Park. NParks lists this park along the Bukit Timah First Diversion Canal and identifies the trail’s Section A as open. Its page also notes limited lighting after 7pm at part of the route, a reminder that ‘park open’ and ‘suitable for every hour’ are not equivalent.
During 2027, the questions worth checking are which additional Old Jurong Line segments actually open, whether any temporary routes or diversions are needed, and which stretches remain under works or environmental protection. A launch ceremony, partial path opening and complete 18km network are different events.
Why protect the forest when making nature trails?
Here is the paradox of a popular nature walk: the very experience that draws people outdoors can damage what they came to admire. Informal footpaths widen with repeated use; quiet areas become busier; soils compact and vulnerable plants can be disturbed.
NParks has specifically highlighted ecological sensitivity around Clementi Forest, including orchids affected by off-trail activity. Its nature-corridor guidance explains that ecological connectivity helps wildlife move between Bukit Timah Nature Reserve and the Southern Ridges. A designated route can guide visitors towards a rewarding experience without making every forest floor an invitation to explore.
A corridor also works for wildlife differently from the way it works for a walker. People like continuous paved surfaces, crossings, shade and resting points. Wildlife may need sufficiently connected vegetation, dark or quiet passages, suitable feeding habitats and low disturbance. A good nature-network plan considers both, not just the line drawn on a visitor map.
Why Maju Forest became an important 2026 issue
The future of the network was brought into sharper focus by 2026 public discussions about proposed housing at Sunset Way, involving part of Maju Forest. The issue is not a simple choice between enjoying nature and building homes. It is how to meet housing needs while retaining meaningful habitat and railway-heritage connections.
In an official parliamentary exchange on 4 August 2026, the Ministry of National Development explained that it was studying the retention of a significant green stretch along the former Jurong Railway Line and a natural stream with its surrounding riparian buffer, with more native trees and buffers around future development.
The ministry said that environmental assessments and stakeholder consultation would inform the final design, and that feedback responses and changes would be published. That statement is important because a conceptual plan is not the same as a fully fixed site layout. Similarly, retaining some forest does not mean every potential ecological impact has been resolved.
Readers may encounter figures describing a proposed 23-hectare Maju Forest site, including about 8 hectares to be retained and approximately 15 hectares considered for housing. These were part of the 2026 planning discussion—not a claim that all development has already been completed. Check the latest HDB and agency releases for final approved boundaries.
A practical mini-guide to the future trail
For an outing today, plan from known public trailheads, not a hypothetical continuous future line. NParks currently identifies Holland Green Linear Park and part of Clementi Nature Trail as usable. Check its maps and visitor advisories before setting out. Do not enter fenced, closed or unofficially cleared forest tracks.
If taking children, use the journey as a two-part lesson. First, ask what the remaining railway structures tell us about Singapore’s industrial history. Second, observe the difference between a planted park, a waterway edge and a dense forest. These places all look green, but they have different ecological roles.
If a segment is closed, there is no need to treat the plan as a failed promise: route safety, wildlife protection and sequencing can shape the timeline. Equally, an old project announcement is not sufficient evidence that an opening occurred. The latest park operations notice wins.
What to watch through 2027
- Official openings: NParks notices naming the exact Old Jurong Line trail sections accessible to the public, entrances and dates.
- Network connection: whether first-phase routes genuinely connect to Ulu Pandan Park Connector and existing Clementi Nature Trail segments.
- Conservation: the actual retained nature areas, riparian buffers and environmental monitoring conditions in the Sunset Way/Maju Forest planning process.
- Access design: stairs, steps, path surfaces, daylight restrictions and any bicycle rules, which may differ between segments.
- Heritage interpretation: protection and explanation of remaining railway tracks and bridges rather than casual access onto unsafe structures.
Frequently asked questions
Is the whole Old Jurong Line Nature Trail open in October 2026?
The sources checked do not establish that the whole route is open. Earlier reports anticipated phased openings from the end of 2026; check current NParks notices for specific segments.
Is Holland Green Linear Park the same as the Old Jurong Line Nature Trail?
No. It hosts an existing section of the Clementi Nature Trail, which is part of the wider green network but distinct from the future old-railway trail.
What is the difference between a rail corridor and a nature corridor?
The former describes a route based on railway land. A nature corridor describes landscape connections that allow ecological movement among habitats, sometimes also incorporating recreational paths.
Will the complete 18km network be ready by 2027?
A confirmed network-wide 2027 opening date is not established in the official sources used here. Track route phases individually.
Should people explore the disused track on their own?
No. Use official marked and opened public paths only, respect closures and stay out of ecologically sensitive or unsafe areas.
Where to verify updates
URA: 2026 Old Jurong Line plans · NParks: 18km Clementi network and route purpose · NParks: open Clementi Nature Trail Section A · NParks: ecological connections · NParks: community stewardship, updated October 2026 · Parliament: August 2026 Sunset Way/Maju Forest planning response.
Last fact-checked: 24 October 2026. The article distinguishes open paths, phased plans and proposals still subject to environmental consideration. Always check current NParks access and safety information before a walk.
More in the Future of Bukit Timah series: Market and community building · Former fire station nature gateway · Holland Plain homes and wetlands. Earlier coverage: Turf City homes · Cross Island Line works · 2027 Rochor green walk · Upper Bukit Timah Canal.