How do I get on C-TRAN's vendor list so I can be notified of upcoming contracting opportunities?

C-TRAN utilizes the Municipal Research and Services Center (MRSC) of Washington for consultant, vendor, and small works contractor registration.  Please visit to register.

For other service providers and vendors please send an e-mail expressing your interest in doing business with C-TRAN to  In your email tell us about the goods and/or services your firm can provide. When gathering quotes, C-TRAN contacts firms appearing on the list of vendors.  It is always advisable to watch  The Columbian and The Daily Journal of Commerce, (Portland publication) for advertisement regarding C-TRAN's contracting opportunities for its formal purchases over $50,000, as well check this website frequently for current or upcoming projects. 

My firm would like to submit a bid or a proposal for one of your open solicitations. What do we need to do to make sure that our bid or proposal receives your consideration?

Thoroughly read the solicitation in its entirety as there are different requirements based on the method of the solicitation. Such as Invitation to Bid (ITB) and Request for Statement of Qualifications. explains the purpose of the project and all of the information that is required from interested vendors.

If you have questions about our solicitation, the correct format for your document, our selection process, or anything else, contact C-TRAN procurement personnel as early as possible in the process.

Every solicitation lists a date and time as its submittal deadline. We must receive your bid or proposal in C-TRAN's Administration Office before that date and time. We will not accept late bids or proposals and we will return them unopened, no exceptions. Whether you use regular mail, delivery service, or hand delivery, it is your responsibility to ensure it meets the submittal deadline. We cannot accept faxed responses for C-TRAN Proposal responses.

Information for Certified Contractors through the State of Washington

C-TRAN promotes and encourages small business participation, which may include small minority owned and women owned businesses, and small businesses owned by persons with disabilities, on its contracts. Firms doing business with C-TRAN are expected to openly allow all potential business partners an equal, non-discriminatory opportunity to compete for business as joint venture partners or subcontractors.

C-TRAN is interested in firms that demonstrate a commitment to equal employment opportunity and encourages firms to employ a workforce that reflects the region's diversity and to adhere to non-discrimination provisions.  Please note C-TRAN's Disadvantaged Business Enterprises Goal Setting Methodology on this website.

To be considered as a DBE under the Federal DBE Certification Program, participating firms must be certified by the Washington State Office of Minority and Women's Business Enterprises (OMWBE) prior to the bid/proposal submittal date. Information regarding Disadvantaged Business Enterprises currently certified with the State of Washington is available at:

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