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Downtown Seattle Transit Tunnel modernisation programme
Downtown Seattle Transit Tunnel modernisation programme — 26kV cable replacement, electrical infrastructure, ventilation, lighting, fire alarm, public address and track intrusion detection
Every fact on this page is free. Exact values, dates, award detail and the procurement route open in the United States edition — one edition is free with one email. Open your free edition · Open this record in the Atlas
- Buyer
- Central Puget Sound Regional Transit Authority (Sound Transit)
- Where
- Washington · Seattle
- Segments
- Stations & depots, Electrification, Telecoms, Signalling
- Technology areas
- Digital operations, Cybersecurity, Track & civil
- Status
- Planned — The programme's authorized allocation rose in the 2026 budget to bring every active project through construction and closeout.
- Value band
- $100–500m
- Currency
- USD
- Key dates (month)
- Programme increase 2026 · Cable replacement solicitation 2026 · Bundle solicitation 2026
Status in full
Read more
The programme's authorized allocation rose in the 2026 budget to bring every active project through construction and closeout. It is the fourth largest service delivery programme in the 2026 budget. A bundle of procurements is scheduled from the fourth quarter of 2026.
Next step
Withheld in the free surface
- Full scope
- Exact value
- How the figure was arrived at
- Key dates (3)
- Published bidders
Full detail withheld: 5 fields. In the United States edition · See a fully open example
2 sources · all primary
- ● Central Puget Sound Regional Transit Authority (Sound Transit) · 2026 Adopted Budget and Financial Plan — agency overview, transit operating budgets by mode, project budgets, Transit Improvement Plan and Appendix I project and programme detail pages (published 2026-03-23 · checked 2026-09-14)
- ● Central Puget Sound Regional Transit Authority (Sound Transit) · Quarterly Procurement Look Ahead — upcoming architectural, engineering and construction procurements over the next 18 to 24 months, last updated July 2026 (published 2026-07 · checked 2026-09-14)
Related tenders
Same buyer first, then the same segment in this market.
| Tender | Buyer | Status | Value band | Next key date |
|---|---|---|---|---|
| Sound Transit Link light rail vehicle simulator | Sound Transit | Open | value not published | Published August 2026 |
| Sound Transit Series 3 light rail vehicles | Sound Transit | Bids closed | value not published | |
| West Seattle Link Extension W100 SODO Station | Sound Transit | Bids closed | value not published | Published August 2026 |
Show all 6 related tenders
| Tender | Buyer | Status | Value band | Next key date |
|---|---|---|---|---|
| Sounder commuter rail HVAC overhaul | Sound Transit | Open | value not published | Published July 2026 |
| Ballard Link Extension civil engineering design | Sound Transit | Pre-bid | no value published (pre-solicitation notice) | |
| West Seattle Link Extension W200 Duwamish River Crossing | Sound Transit | Bids closed | value not published | Bids closed July 2026 · award expected |
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Compiled by Watchtower to editorial standards the Managing Partner sets and enforces. Public record only — every datum carries its source.