Scour Improvements at North 119th Street Bridge Over St. Vrain River

Purpose/Background This project consists of removal of portions of existing riprap and placing new riprap. The project also includes temporary creek diversion and access, and temporary erosion control best management practices, to minimize construction impacts to St. Vrain River. Optional Pre-Bid Meeting An Optional Pre-Bid Meeting will be held on June 29, 2023 at 11:00 a.m. Please click on the link on the cover page or use the call-in number if you wish to attend. Written Inquiries All inquiries regarding this BID will be submitted via email to the Boulder County Purchasing Office at purchasing@bouldercounty.org on or before 2:00 p.m. July 6, 2023. A response from the county to all inquiries will be posted and sent via email no later than July 13, 2023. Do not contact any other county department or personnel with questions or for information regarding this solicitation. Submittal Instructions BIDs are due at the email

box only, listed below, for time and date recording on or before 2:00 p.m. July 21, 2023. A bid opening will be conducted at 3:00 p.m. via Microsoft Teams. Please see the link in the bid document or use the call-in number. A copy of the bid tab will also be sent to all who have submitted a Bid. Vendors must answer whether line-item pricing information submitted with a bid is confidential or closely held. Please note that email responses to this solicitation are limited to a maximum of 50MB capacity. NO ZIP FILES OR LINKS TO EXTERNAL SITES WILL BE ACCEPTED. THIS INCLUDES GOOGLE DOCS AND SIMILAR SITES. ALL SUBMITTALS MUST BE RECEIVED AS AN ATTACHMENT (E.G. PDF, WORD, EXCEL). BID #7478-23 119th Scour_Bid Tab 062223 The attached addendum supersedes the original Information and Specifications regarding BID # 7478-23 where it adds to, deletes from, clarifies or otherwise modifies. All other conditions and any previous addendums shall remain unchanged. ATTENTION: Please see the revised bid tab attached separately. Please note: BIDS will only be accepted electronically by emailing purchasing@bouldercounty.gov. BID #7478-23 Addendum 1 119th Scour_Bid Tab Rev BID #7478-23 Addendum 2 119th Scour_Bid Tab Rev 071223