Invitation to Bid 2025-038 HVAC Controls Upgrade Whatcom Transportation Authority (WTA), the public transportation agency in Whatcom County, Washington, is soliciting bids from qualified contractors to replace and expand the existing Direct Digital Control System for all equipment and devices at WTA's head office in Bellingham. Bids are due to WTA's Procurement Portal no later than September 23, 2025, at 12:00 PM. Solicitation documents can be obtained at http://www.ridewta.com/procurement/ under Open Procurements. WTA encourages women, minority business firms, and DBEs to submit proposals. IPL0265031 Aug 19 2025