View Public Works' open solicitations, and learn more about how to register as a supplier and submit a bid or proposal. Vendors and suppliers interested in doing business with Allegheny County can review open solicitations for Purchasing and Supplies bids on the Bonfire website.BID PROPOSAL: Please see the form located in section 004123. Proposals must be made on the Authority's form and in accordance with the Plans and Specifications and the "Instructions to Bidders"'. Bids will be officially opened and read aloud on Monday, September 16, 2024, at p.m.