Singapore Completes Its Circle Line After 17 Years, Creating Southeast Asia's First Orbital Metro Loop

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Three new stations closed the final gap on July 12, turning Singapore's 39 km Circle Line into a full loop with 33 stations and 12 interchanges — a milestone 17 years in the making.

On 12 July 2026, Singapore opened three new stations on the Circle Line — Keppel, Cantonment, and Prince Edward Road — closing a four-kilometre gap between HarbourFront and Marina Bay and completing the line as a full orbital loop. It is the first complete circle metro line in Southeast Asia, and it took 17 years and six construction stages to get there.

Six Stages, 17 Years

The Circle Line's first segment opened in May 2009 with five stations between Bartley and Marymount. Over six stages across nearly two decades, the line grew to 39 kilometres and 33 stations, threading an orbital path around Singapore's central area. Stage 6 — the three stations that closed the loop — had been under construction since civil works began, with Keppel station alone costing S$313.8 million and Prince Edward Road station S$310.8 million.

The public got a free preview on 4 July, with more than 280,000 rides taken during the nine-hour open day. Revenue service began eight days later on 12 July.

What the Loop Changes

Before the loop closed, commuters travelling between Singapore's western and eastern suburbs often had to route through congested central interchange stations like City Hall and Raffles Place. The completed circle gives them a direct orbital path that avoids the city centre entirely. A commuter travelling from Telok Blangah to Marina Bay, for example, previously needed to transfer between three separate lines; the same journey now runs on a single train with no transfers, saving around 10 minutes.

The Circle Line is fully automated and driverless — the second such line in Singapore after the North East Line — with each train capable of carrying up to 931 passengers. Its 12 interchange stations connect it to every other MRT line in the network, making the completed loop a backbone for cross-city travel.

What It Means for Bangalore

Namma Metro's network today is radial: the Purple and Green Lines cross at Majestic, and the Yellow Line branches south from RV Road. Every cross-city trip passes through the centre. Bangalore's planned Phase 3 includes the Outer Ring Road corridor, which would create an orbital path connecting suburbs directly — much like what Singapore's Circle Line now does. Singapore's 17-year, six-stage approach to completing its loop offers a practical precedent: build the orbital line in phases, connect it to every radial line at interchanges, and the network transforms from a hub-and-spoke system into one that lets commuters bypass the congested core.

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