The Community and Economic Development Department requests proposals and qualifications for a variety of department-specific projects throughout Riverside. Listed are all currently available notices inviting bids for County of Riverside Transportation Department public works projects.Do business with RCTC. Register as a vendor to bid on contracts with RCTC through PlanetBids. All bids shall be submitted in hard copy form. See final checklist for items to be included on envelope. For mail delivery, please call 951.955. Notice of Inviting Bids. This prequalification process is a mandatory process for all Licensed Contractors who intend to submit bids for Construction. NYC DOT is proposing pedestrian safety improvements at the intersection of E 170th Street and Teller Avenue in the Bronx.