Are you interested in working with us as a vendor or contractor?   We issue solicitations for goods, inventory items, consultant and professional services, and public works (construction) projects. Our procurement department administers all the procurement activities for MTS and its subsidiaries: San Diego Trolley Inc. (SDTI) and San Diego Transit Corp. (SDTC). 

How to Bid

Register your company in our vendor database using our self-registration process and review open bids. There is no cost to register or submit bids for any open procurements.  Once you are registered you will be automatically included in our vendor database.

Register/View Open Opportunities


We are committed to ensuring equal opportunity for all vendors interested in our projects. We strongly encourage contractors, subcontractors, joint ventures and Disadvantaged Business Enterprises (DBEs) to bid on relevant projects and contracts. 

Methods of Procurement

Informal Solicitations

We occasionally solicit contracts that do not require a formal solicitation process. Our policy is to obtain a minimum of one quote for each "micro purchase" that is $5,000 or less, and a minimum of three quotes for "small purchases" between $5,000 and $150,000. 

Formal Solicitations

Contracts for goods and services valued in excess of $150,000 are obtained through a formally advertised and competitive selection process. We issue Invitations for Bids (IFB), Requests for Proposals (RFP), and/or Requests for Qualifications (RFQ). Solicitations may be publicized in local newspapers or other print media of local and/or general circulation, as well as on our online bid system, PlanetBids.

Construction Projects

Contracts for construction (public works) in excess of $50,000 are solicited through a formal competitive bidding process. We will seek a minimum of three quotes if the expected construction contract is between $1,000 and $50,000. Below is a list of upcoming construction projects.

PROJECT NAME Admin - Iris Rapid - Route and Stations Infrastructure  FY22 FUNDED $4,300,000 ESTIMATED BID START Summer 2021
PROJECT NAME SDTC - IAD Overhead ZEB Charging Master Planning FY22 FUNDED $500,000 ESTIMATED BID START Summer 2021
PROJECT NAME SDTC - IAD Roof Fall Protection Safety Improvements FY22 FUNDED $245,000 ESTIMATED BID START Winter 2022
PROJECT NAME SDTI - Green Line IMT Double Tracking  FY22 FUNDED $5,170,000 ESTIMATED BID START Summer 2021
PROJECT NAME SDTI - El Cajon Transit Center Third Track FY22 FUNDED $5,000,000 ESTIMATED BID START Summer 2021

Consultant Form 700 Form Filing

Pursuant to state regulations enforced by the California Fair Political Practices Commission (FPPC), select consultant employees are required to file a disclosure of financial interests known as a Form 700 in accordance to MTS’s Conflict of Interest Code. Such official makes, participates in making, or uses their official position to influence a governmental decision.