Sound Transit
4 tracked projects
| Project | Region | Mode | Status | Alignment | Last Updated |
|---|---|---|---|---|---|
| West Seattle and Ballard Link Extensions | WA | light rail | Funded | Two ST3 light rail extensions, planned together and split into separate projects in 2023. West Seattle Link (3.9 mi, SODO to Alaska Junction, two new stations) has federal environmental approval, is in final design, and targets 2035. Ballard Link (7.7 mi, SODO to Ballard through a new downtown tunnel, up to nine stations) is in environmental review; construction is funded only to Seattle Center, targeted for 2042. | Nov 13, 2026 |
| Everett Link Extension | WA | light rail | Env. Review | 16-mile extension of Link light rail from Lynnwood through unincorporated Snohomish County to downtown Everett, largely following the I-5/Broadway corridor, with six stations plus a provisional SR 99/Airport Road stop. | May 29, 2026 |
| Tacoma Dome Link Extension | WA | light rail | Env. Review | ~8.5-mile extension of Link light rail from the Federal Way terminus south to Tacoma Dome Station, mostly elevated, with new stations at South Federal Way, Fife, and East Tacoma/Portland Avenue, connecting to the T Line and Sounder commuter rail. | May 1, 2026 |
| TCC T Line Extension (Tacoma Link) | WA | light rail | Planning | 3.5-mile extension of the T Line (Tacoma Link) streetcar-style light rail from its Hilltop terminus northwest to Tacoma Community College, adding six stations including one near St. Joseph Hospital; grows the total T Line to 8.4 miles and 18 stations. | Jan 1, 2026 |