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Sounder Rail Track and Signal Improvement Phase 3
Sounder Rail Track and Signal Improvement project — Phase 3 preliminary engineering and Sounder project management services, David Evans & Associates
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 · Tacoma
- Segments
- Consultancy, Track, Signalling, Civil works
- Technology areas
- Track & civil, Signalling & train control
- Status
- In execution — The System Expansion Committee took final action in April 2026.
- Value band
- $25–100m
- Currency
- USD
- Key dates (month)
- Conceptual engineering complete 2025 · Awarded April 2026 · Preliminary engineering complete 2028
Status in full
Read more
The System Expansion Committee took final action in April 2026. The preliminary engineering phase is to be completed by the end of 2028; Sound Transit's System Expansion Monthly Status Report of September 2026 records ongoing preliminary engineering for the Sounder Rail Track and Signals Improvement, DuPont and King Street Station projects.
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
3 sources · all primary
- ● Central Puget Sound Regional Transit Authority (Sound Transit) · Motion No. M2026-14, Contract Modification with David Evans & Associates for the Sounder South Capacity Expansion and Sounder DuPont Extension projects - Sounder Rail and Signals Improvement Project (published 2026-04-09 · checked 2026-09-14)
- ● 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) · Presentation - System Expansion Monthly Status Report, System Expansion Committee 10 September 2026 (published 2026-09-10 · checked 2026-09-14)
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