List of US+Canada rail transit currently under construction

[lrt's friend]

Originally Posted by Innsertnamehere

https://www.cbc.ca/news/canada/montreal/rem-s-deux-montagnes-branch-finally-opens-9.6978931

Montreal's REM Deux Montagnes branch opened over the weekend - a 31km (19 mile) light metro line which converted a former commuter rail line.

to bé précise, it opened November 15th.

[SpongeG]

Seattle's Federal Way expansion opened Dec 6. The second part of the Eastlink from Bellevue to Seattle is aimed to open in May 2026.

• Video Link

[mhays]

Here's more about Seattle's Federal Way Link extension that opened today.

(As for East Link, aka the 2 Line, I've heard May at the latest, not as a target date.)

https://www.seattletimes.com/seattle-new...tions-open-with-south-king-county-party/

https://www.theurbanist.org/2025/12/06/everything-you-need-to-know-about-federal-way-link/

[Innsertnamehere]

The Finch West LRT opened yesterday in toronto to lackluster reviews, complaining about running speeds. The line runs so slowly (50 minutes to cover 10 kilometres) that many people can literally outrun it:

https://www.ctvnews.ca/toronto/article/f...nches-first-new-transit-line-since-2002/

[Tcmetro]

In addition to this weekend's Seattle and Toronto openings, Buffalo opened the short DL&W extension today.

https://www.nfta.com/news/authority-announcements/nfta-opens-dlw-train-station

https://youtu.be/34vRU2KLF1k?si=-Log5rhs7TUnXgfM

[mhays]

Seattle's East Link (2 Line) will fully open Saturday, March 28. Previously they'd said April or end of May at the latest.

This will double frequency interlining with the existing 1 Line from Lynnwood to Chinatown/ID to 4-5 minutes (depending on time of day), then split off to one new station in each in Seattle and Mercer Island then hit the already-open stretch from Bellevue to Redmond.

This will be the biggest new service in Seattle since the first line opened in 2009.

https://www.seattletimes.com/seattle-new...vice-start-between-bellevue-and-seattle/

[mhays]

Let me add that 1 Line trains are often jam packed, and the capacity will be very useful even where it only adds to current service. Also several stations to the east are either legit downtowns or big TOD/job centers (like the 50,000-person Microsoft HQ), and the new ridership should be tremendous.

Stadium service will be particularly useful. Stations are right next to Seahawks, Mariners, and Husky (FB/BB) games, and the current service is packed for a long time after and especially before each. The World Cup is a particular key point, both for crowd levels and the ability of fans to easily travel from Eastside hotels.

[lrt's friend]

Eglinton Crosstown LRT (Line 5) opened in Toronto on February 8th

[Nouvellecosse]

Originally Posted by mhays

Seattle's East Link (2 Line) will fully open Saturday, March 28. Previously they'd said April or end of May at the latest.

This will double frequency interlining with the existing 1 Line from Lynnwood to Chinatown/ID to 4-5 minutes (depending on time of day), then split off to one new station in each in Seattle and Mercer Island then hit the already-open stretch from Bellevue to Redmond.

This will be the biggest new service in Seattle since the first line opened in 2009.

https://www.seattletimes.com/seattle-new...vice-start-between-bellevue-and-seattle/

Is the northern part of the line currently much busier than the southern part? I hope so because the new service pattern will make the capacity very lopsided.

[mhays]

The southern part may have capacity issues. It did pre-COVID when they had to run three-car trains instead of four due to rolling stock availability. Now they're all four cars. Service will initially peak at eight-minute frequencies on each line, but I've heard it could go to six with some continued investment in the underlying tech. Bus service will continue to be needed on similar routes, and our buses get decent investment.

That said, the northern portion covers the densest parts of the city--Downtown through Capitol Hill, the U District, and Roosevelt. It deserves four-minute service or better.

[Nouvellecosse]

^ Interesting stuff. I'll definitely be watching how things progress.

[Innsertnamehere]

The Eglinton Crosstown LRT opened in Toronto on Sunday, February 8th:

https://www.cbc.ca/news/canada/toronto/livestory/line-5-lrt-eglinton-crosstown-opening-9.7077945

https://globalnews.ca/news/11656920/eglinton-crosstown-lrt-opens/

This marks the end of a 15- year construction period. The line has opened to better reviews than the Finch West LRT which has been dogged by long travel times.

The line includes a 10-kilometre (6 mile) underground portion which effectively operates as a metro line with 13 new stations as well as a 9-kilometre surface section running in the median of the road with 12 stations. Total travel time on the corridor has dropped by roughly an hour from ~120 minutes to just under an hour. Further speed improvements are expected in the coming months to bring travel times down to closer to 45 minutes.

This also marks the largest transit line opening in Toronto by length since the opening of the Bloor-Danforth subway line in 1966.

A 9.2-kilometre (5.7 mile) western extension is already under construction with a completion date still 5-7 years out. The western extension is entirely grade separated and will function as a metro, much like the central underground portion of the newly opened line.

[Cirrus]

Thanks to everyone for the notes. I do always come back and update, if not right away. Made the following updates to the front page list:

• Unbundled Seattle's two LRT projects to list them separately rather than together, per mhays, and moved the Federal Way extension to complete, per SpongeG
• Added Toronto Yonge subway extension (5 mi / 8 km) to the construction list, per Innsertnamehere
• Moved Toronto's Finch West LRT & Eglington Crosstown LRT from construction to finish, per Innsertnamehere
• Added SF's SMART Healdsburg commuter rail extension (9 miles) to the construction list, per homebucket
• Moved Montreal's Deux Montagnes REM branch to complete (19 mi / 31 km), per Innsertnamehere
• Moved Buffalo's DL&W LRT extension to complete, per Tcmetro
• Moved Honolulu's Skyline Phase 2 to complete (nobody noted it in the thread but it happened in the fall)

Congrats Toronto especially on the multiple long-awaited major openings!

And since nobody else mentioned it, Honolulu's Phase 2 Skyline opened in October.

[Innsertnamehere]

Thanks!

Toronto should have the two Eglinton lines split out like Seattle - completed this year would be:


Toronto Eglinton Crosstown - 12 miles (19 km)

Still under construction would be:

Toronto Eglinton Crosstown West - 6 miles (9 km)

[craigs]

Originally Posted by Cirrus

Thanks to everyone for the notes. I do always come back and update, if not right away. Made the following updates to the front page list:

• Unbundled Seattle's two LRT projects to list them separately rather than together, per mhays, and moved the Federal Way extension to complete, per SpongeG
• Added Toronto Yonge subway extension (5 mi / 8 km) to the construction list, per Innsertnamehere
• Moved Toronto's Finch West LRT & Eglington Crosstown LRT from construction to finish, per Innsertnamehere
• Added SF's SMART Healdsburg commuter rail extension (9 miles) to the construction list, per homebucket
• Moved Montreal's Deux Montagnes REM branch to complete (19 mi / 31 km), per Innsertnamehere
• Moved Buffalo's DL&W LRT extension to complete, per Tcmetro
• Moved Honolulu's Skyline Phase 2 to complete (nobody noted it in the thread but it happened in the fall)

Congrats Toronto especially on the multiple long-awaited major openings!

And since nobody else mentioned it, Honolulu's Phase 2 Skyline opened in October.

Thank you, Cirrus, for maintaining this amazing archive and current list!

[mattropolis]

Cirrus, Ottawa should be blue in the 2025 list.

[Cirrus]

Originally Posted by Innsertnamehere

Eglinton lines should be split. Crosstown (12 miles/19km) complete. West (6 miles/9km) u/c

Originally Posted by mattropolis

Ottawa should be blue in the 2025 list.

These corrections have been made. Thanks!

[Tcmetro]

Some updates for the list:

Openings:
3/28/2026 - Sound Transit's Line 2 Crosslake Connection opened
3/31/2026 - NICTD's South Shore Line Monon Corridor (suburban Chicago) opened

Projects under construction, not on the list:
Kansas City's Riverfront Streetcar extension - 0.7 mi. - opening in May 2026.
Extends the streetcar to the Riverfront, next to the soccer field.
https://kcstreetcar.org/about-streetcar/streetcar-riverfront-extension/
https://www.kcur.org/news/2026-03-17/kan...-before-the-world-cup-heres-what-we-know

NYC MTA's Metro-North Penn Station Access - completion in 2027.
Adds 4 stations and extends New Haven Line trains along 19 miles of existing intercity Amtrak lines into Penn Station.
https://www.mta.info/project/penn-station-access

Salt Lake City UTA's S-Line Streetcar extension - 0.2 mi. - opening in 2027.
Extends the streetcar by about 1 block to terminate closer to the shopping center and adds more double track.
https://www.rideuta.com/Current-Projects/S-Line-Extension-Project

Chicago CTA's Red Line extension - 5.5 mi. - opening in 2031.
Extends the Red Line south with 4 stations and a new yard, closer to the city's southern border.
https://www.transitchicago.com/rle/

Los Angeles Metro's East San Fernando Valley light rail - 6.7 mi. - opening in 2031.
New isolated light rail line that will connect to the G Line busway and the future Sepulveda subway.
https://www.metro.net/projects/east-sfv/

Calgary Transit's Green Line - 16 km/10 mi - opening in 2031.
Adds 10 stations on a new low-floor light-rail line.
https://www.calgary.ca/green-line/construction.html

NYC MTA's Second Ave Subway phase 2 - 2.0 mi - opening in 2032?
Adds 3 stations and a connection to the Lexington Ave subway and the Metro-North railroad.
https://www.mta.info/project/second-avenue-subway-phase-2

Corrections:
Miami's Tri-Rail downtown extension opened in 2024, but is listed as 2025.

Upcoming 2026 openings:
Los Angeles Metro's D Line Phase 1 extension - 5/8/2026
Kansas City's Riverfront Streetcar extension - May 2026
Montreal's REM Anse‑à‑l’Orme (A3) branch - Spring 2026
St. Louis MetroLink's Mid-America Airport extension - Summer 2026
Ottawa's O-train Line 1 East extension to Orleans - July 2026
Santa Ana's OC Streetcar - August 2026

[craigs]

The first, 3.9-mile phase of the Los Angeles Metro D Line extension has opened to great fanfare.


Passengers wait to board the first train to arrive at the Metro D Line at the Wilshire/Fairfax Station in Los Angeles on Friday. (Genaro Molina / Los Angeles Times)

[Tcmetro]

Originally Posted by Tcmetro

Some updates for the list:

Upcoming 2026 openings:
Los Angeles Metro's D Line Phase 1 extension - 5/8/2026
Kansas City's Riverfront Streetcar extension - 5/18/2026
Montreal's REM Anse‑à‑l’Orme (A3) branch - 5/18/2026
St. Louis MetroLink's Mid-America Airport extension - Summer 2026
Ottawa's O-train Line 1 East extension to Orleans - July 2026
Santa Ana's OC Streetcar - August 2026 Spring 2027

With the openings in Los Angeles, Kansas City, and Montreal, and the delay in Santa Ana, only two openings are left this year - Ottawa and St. Louis.