Luxembourg's tram has grown in phases since it first opened in December 2017, and it is nowhere near finished. A second depot broke ground in July 2026, a second north-south line is in the study phase, and an extension toward Esch-sur-Alzette is pencilled in for the early 2030s. Here is where each piece of the plan actually stands.
What is already running
Luxembourg's tram, Line 1, has run its complete planned route since 2 March 2025, connecting Luxembourg Airport in the north-east to the Cloche d'Or business district in Gasperich to the south, via Kirchberg, the Pfaffenthal-Kirchberg funicular connection, Luxembourg's central railway station, and Bonnevoie. The line reached the Stade de Luxembourg and the Cloche d'Or terminus in July 2024, and the final segment out to Senningerberg and the airport followed in March 2025, closing out a project that began construction in 2014 and opened its first stretch in December 2017.
Under construction now: a second depot at Cloche d'Or
Construction of a second tram depot and maintenance centre began on 6 July 2026 at Cloche d'Or, near the existing Park & Ride and the Stadion terminus. The facility, covering roughly eight hectares, will provide storage, maintenance and operational deployment for the additional 41 tramsets that future network expansion requires, and is scheduled to enter service in 2030, with the main structure beginning construction in early 2027. Preparatory ecological measures have already been put in place to protect a small population of a protected butterfly species found near the site, a detail that gives some sense of how far into the planning process this project already sits. The works required a temporary interruption of tram service on the Kirchberg section between two stations for roughly two and a half weeks in July and August 2026, the kind of short, planned disruption that is likely to recur as construction on the wider network continues.
The Kirchberg extension: the next line to open
A first extension of Line 1 onto Kirchberg itself, running from Pont Rouge via the Kuebebierg area to Luxexpo, referred to as line K2A, is currently under construction, with entry into service targeted for the start of the 2027 school year. This is the nearest-term addition to the network and the one most likely to open roughly on schedule, since it builds on infrastructure and rolling stock already in active use elsewhere on the line.
A second north-south axis, still in the study phase
The more significant long-term project is a second tram line running roughly parallel to the existing one, following the Route d'Esch for a stretch of about 4.2 kilometres and intended to increase overall transport capacity and better distribute passenger flow across the network rather than concentrating everyone on a single line. Studies for this extension are ongoing, with a financing bill originally expected toward the end of 2025 or start of 2026, and the government's own published timeline puts entry into service at 2030 to 2031, meaningfully further out than the Kirchberg extension.
Toward Esch-sur-Alzette: the furthest-out piece
The most ambitious extension under study would eventually connect Luxembourg City to Esch-sur-Alzette, the country's second-largest city, via four sections departing from Cloche d'Or: Leudelange, Foetz, Metzeschmelz and a future terminus at Belvaux. Environmental studies and procedures are continuing, with a financing bill for the first section, Cloche d'Or to Leudelange, expected to be tabled by the end of 2026 at the earliest. This is the piece of the plan furthest from breaking ground, and anyone buying property specifically on the expectation of a tram connection to this corridor should treat that connection as a multi-year, not multi-month, prospect.
Why this matters for where you choose to live
Neighbourhoods already served by the completed Line 1, Kirchberg, Bonnevoie, the area around the central station, and Cloche d'Or itself, benefit from tram access today, a real and immediate factor in daily commuting and one that is already reflected in local property demand. Areas along the Route d'Esch corridor or toward Leudelange and Esch-sur-Alzette are betting on infrastructure that remains, at best, several years from opening, and a buyer or tenant choosing a neighbourhood on the promise of a specific future tram stop should weight that promise accordingly, treating it as a plausible long-term upside rather than a near-term certainty.
How to track the actual progress
Luxtram, the public operator, and the Ministry of Mobility and Public Works publish regular updates on each extension's status, and transports.public.lu maintains the most current overview of works and their expected completion. Given how much a project's target date can move between the study phase and an actual financing law being adopted, as has already happened more than once on this network, checking the current status directly before making a decision that depends on a specific extension is worth the five minutes it takes.
Living with construction in the meantime
Building a tram network through an already-dense, historic city inevitably means periodic, short-notice service interruptions on the sections already running, as seen with the roughly two-and-a-half week Kirchberg suspension during the July 2026 depot groundworks. These interruptions tend to be well telegraphed in advance through multi-channel information campaigns and replacement bus services, but anyone relying on the tram for a daily commute along an active construction corridor should expect the occasional planned disruption over the coming several years, rather than assuming the current smooth service is guaranteed to continue uninterrupted while the network keeps expanding around it.
What this means for the wider transport mix
Every stage of tram expansion is designed to work alongside, not instead of, the free bus and rail network already covering the rest of the country, and the eventual second north-south axis specifically exists to relieve pressure on Line 1 rather than to serve entirely new territory. A household deciding where to live today should weigh the tram's current, genuinely reliable coverage of central Luxembourg City against the free RGTR bus network's much wider reach into areas the tram is unlikely to serve directly for years, if ever, rather than assuming every part of the country is destined for a tram stop eventually.
A stronger reading of why this matters for where you choose to live starts by asking what would change for the resident on an ordinary weekday. It depends on walking time, route reliability, secure storage, peak-hour conditions and backup options.
Editorial note: Infrastructure timelines routinely shift during construction and financing approval. Treat the dates here as the latest published targets as of 2026, not guarantees, and check transports.public.lu or luxtram.lu for current service status before relying on a specific opening date.
Questions worth carrying into real life
For the tram network's next decade: what's built, what's under construction, what's still a plan, the final test is whether the advice survives contact with an ordinary week.