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Sound Transit – Vendor Portal

Sound Transit (Central Puget Sound Regional Transit Authority) has partnered with to provide information regarding contracting opportunities at Sound Transit. All guests to our site can view solicitations, bid results and solicitation award information. If you are interested in working with Sound Transit please register using the Vendor Registration button below in order to receive email notifications about upcoming projects in your field(s) of interest. Doing so will enable you to download solicitation documents, associated addenda and will contain information about how to respond to the solicitation.

Vendor Registration

Sound Transit is an Equal Opportunity Employer and encourages Minority, Women and Disadvantaged Business Enterprises to participate in the competitive procurement process. Firms are also advised that Sound Transit expects contractors, consultants, and vendors to adhere to certain Sound Transit policies while on Sound Transit's premises or when communicating with Sound Transit employees. In addition to advertising contract opportunities here on the agency's solicitation web site, it is also Sound Transit's policy to advertise solicitations greater than $150,000 in the Daily Journal of Commerce. This site is intended to meet the requirements of RCW 39.04.155.

While Sound Transit is confident in the full functionality of this system, as a legal matter, notification services offered through the site are not guaranteed and users of the notification system are ultimately responsible for reviewing postings to the site. Sound Transit disclaims all liability for damages caused by the use of this site or the information it contains.

If you are unable to receive email notifications from Biddingo, please read the following FAQ, or contact Biddingo at or (323)-206-4114 for assistance.


Sound Transit posts notices of intent to award without competition for non-competitive awards that exceed $100,000 for seven working days. Such notice of Sound Transit's intent to award a contract without competition through negotiation with only one source is guided by Sound Transit resolution.


Sound Transit invites qualified and interested firms with experience in various construction trades to participate in its Small Works Roster (SWR). SWR firms may provide new construction, renovation, and refurbishment services for various Sound Transit locations on an 'as-needed basis'. This Small Works Roster will serve as a list of firms to perform Sound Transit public works projects estimated to cost less than $350,000. To register for Sound Transit's Small Works Roster, visit and select Sound Transit (Central Puget Sound Regional Transit Authority) from the MRSC Public Agency list. If you are already a member of MRSC Rosters, simply select Sound Transit (Central Puget Sound Regional Transit Authority) from the MRSC Public Agency list.

Total Found: 6   |   Displaying: 1-6  |  
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Solicitation # Solicitation Name Closing Date
Date Posted
Days Left
IB 0290-19
Coiling Door Maintenance
(Washington / United States)
01/06/2020 3:00:00 PM (PT) 12/09/2019 28
Scope | Documents(1) | Document Takers | Announcements | Results | Awards | Q & A Board
RP 0102-19
Transit Oriented Development Spring District/120th Station
(Washington / United States)
02/25/2020 4:00:00 PM (PT) 12/03/2019 78
RP 0281-19
Bi-level Commuter Railroad Cars
(Washington / United States)
01/22/2020 2:00:00 PM (PT) 11/22/2019 44
RP 0273-19
Microsoft Access Support
(Washington / United States)
12/11/2019 10:00:00 AM (PT) 11/20/2019 2
RP 0237-19
Quality Audit
(Washington / United States)
01/14/2020 10:00:00 AM (PT) (Revised) 11/14/2019 36
AE 0204-19
Bus Base North DBPM Services
(Washington / United States)
12/11/2019 5:00:00 PM (PT) 11/07/2019 2
Total Found: 6   |   Displaying: 1-6  |  
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For further information or assistance related to registration or using this system,
please contactthe Biddingo USA office at: E: or call (323) 206-4114

For Small Public Works Roster registration and technical questions,
please contact MRSC Rosters at : or call (206) 436-3798