Work With STA

STA Consultant Database

If you are interested to be added to our consultant database, please download and fill out the STA Consultant Database Form and email it to

DBE Program

It is the policy of the Solano Transportation Authority (STA) to ensure that Disadvantaged Business Enterprises (DBEs) shall have the maximum feasible opportunity to participate in the performance of contracts financed in whole or in part with STA funds. The STA and its employees shall not discriminate on the basis of race, color, sex, national origin, religion, age, or disability in the award and administration of STA contracts. It is the intention of the STA to create a level playing field on which DBEs can compete fairly for contracts and subcontracts relating to the STA’s construction, procurement and professional services activities.

The STA has established a Disadvantaged Business Enterprise (DBE) Program in accordance with regulations of the U.S. Department of Transportation (USDOT) and their Office of Small and Disadvantaged Business Utilization (OSDBU), Title 49 of the Code of Federal Regulations, Part 26 (49 CFR 26).

STA FY 2023-24 DBE Goal Form

Caltrans 2013 DBE Goals & Methodology

DBE Requirements for RFPs

All projects receiving federal dollars must have DBE goals and comply with regulations set forth by Caltrans. On June 29, 2012, the State Department of Transportation (Caltrans) announced major changes to the statewide DBE Program. As part of those changes, bidders/proposers should review the policies outlined in Caltrans Exhibits 10-I, “Notice to Bidders/Proposers DBE Information and 10-J”, “Standard Agreement for Subcontractor/DBE Participation”, in addition to the STA’s DBE Program which can be accessed through the following links:

Exh 10-I Notice to Bidders/Proposers

Exh 10-J Standard Agr for Subs

Pursuant to the monitoring requirements outlined in Section XIV of the STA’s DBE Program (49 CFR 26.37), the bidder/proposer will be required to complete and submit Caltrans Exhibit 10-O1 and 10-O2, “Local Agency Proposer/Bidder-DBE (Consultant Contract) Information” with the award document, regardless of DBE participation, and Exhibit 17-F, “Final Report Utilization of Disadvantaged Business Enterprises” with the completion of the contract. These Forms can be provided electronically upon request.

Required form at Time of Award:

Exh 10-O1 Prop-Bidr DBE Commitment Form

Exh 10-O2 Prop-Bidr DBE Info Form

Exh 15h Good Faith Efforts DBE

Required Form at Time of Contract Completion:

Exh 17-F Final Report DBE

The STA accepts DBE certifications from the following programs:

Procurement Opportunities

RFP 2024-01 Preparation of Plans, Specifications and Estimate (PS&E) for I-80/I-680/SR12 Interchange Project (Package 5)

Pre-proposal Meeting : March 8, 2024 9:00 am
Questions to RFP Due : March 15, 2024 4:00 pm
Response to Questions Posted : March 20, 2024 5:00 pm
RFP Responses Due : March 29, 2024 4:00 pm

The Solano Transportation Authority (STA) invites qualified consultants to submit a proposal to provide professional consultation services to prepare and complete the Plans, Specifications, and Estimate (PS&E) of Package 5 of the I-80/I-680/SR 12 Interchange Project.

Package 5 [SR 12 (West)/Red Top Road/Business Center Drive Project] of the I-80/I-680/SR 12 Interchange Project involves extending Business Center Drive from its current terminus to a realigned Red Top Road. This extension includes construction of a new partial interchange on SR 12 (West) at Red Top/Business Center, as well as a reconstruction of the I-80/Red Top Road

The full Request-for-Proposal (RFP) can be requested by calling (707) 424-6075 or downloaded online as a PDF file at

The RFP describes the project and requirements associated with this RFP. Each Proposer should review these requirements including the evaluation criteria in order to submit a competitive Proposal.

Qualified consultants are invited to submit three (3) hard copies and one (1) digital copy (via flash drive) of your Proposal to the STA office no later than 4:00 PM on Friday, March 29, 2024. The Proposal should be addressed to:

Nicholas Burton, PE
STA Director of Projects
Solano Transportation Authority
423 Main Street
Suisun City, CA 94585-2473

Note that this deadline is firm and late submittals will not be accepted. Proposals will be reviewed and, if needed, the firms/teams whose qualifications most closely meet the STA’s needs will be invited to interview the week of April 8, 2024.

The STA encourages, but does not require for this solicitation, the use of local firms. To assist in the use of local firms, the STA has prepared a database of contact information for local firms for convenience purposes only and without guarantees as to the ability of such firms to provide the services. This database and the Local Preference Policy can be viewed at:

If you have any questions regarding this RFP, please contact Nicholas Burton at 707-399-3207 or e-mail at