Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement

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*** 20 October 2026 - Amendment W9127N26BA0240006 Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement *** This amendment affects changes to the Block 14 (Description of Amendment/Modification): CHANGE IN SOLICITATION SPECIFICATIONS: Solicitation Specifications, Section 01 10 10.00 25 CONTRACTOR'S OPERATIONS AND REQUIREMENTS Paragraph 1.18.4 Traffic Control Plan (TCP) edited. CHANGE IN SOLICITATION ATTACHMENTS: Attachment A16 BN NL Bridge As Builts_combined drawings edited. (SEE ATTACHED AMENDMENT FOR CHANGES) *** 14 October 2026 - Amendment W9127N26BA0240006 Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement *** This amendment affects changes to the Block 14 (Description of Amendment/Modification): Solicitation Specifications, Section 01 45 00.00 25 QUALITY CONTROL Paragraph 3.8.1 GOVERNING FIELD TESTING STANDARDS AND FREQUENCIES added. Solicitation Specifications, Section 03 30 00.00 99 CAST-IN-PLACE REINFORCED CONCRETE Paragraph 3.13.1 GENERAL added. Remove drawing C-104 and replace with C-104 - MARK 1 - AMD-0006 – UPDATE TO DEMOLITION NOTES. Remove drawing C-106 and replace with C-106 - MARK 1 - AMD-0006 – UPDATE TO PAVING AREA AND NOTES, MARK 2 - AMD-0006 – UPDATE TO DEFINE FENCING AND GATE. Remove drawing C-102 and replace with C-102 – MARK 1 - AMD-0006 – UPDATE TO DEMOLITION NOTES. (SEE ATTACHED AMENDMENT FOR CHANGES) *** 01 October 2026 - Amendment W9127N26BA0240005 Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement *** This amendment effects changes to the Block 14 (Description of Amendment/Modification): The Solicitation Period is extended by 21 calendar days which changes the Solicitation Closing Date from October 8, 2026, to October 29, 2026. Solicitation Specifications, Section 01 10 10.00 25 CONTRACTOR'S OPERATIONS AND REQUIREMENTS, Paragraph 1.18.4 Traffic Control Plan (TCP) edited. Solicitation Specifications, Section 01 45 00.25 25 CONSTRUCTION MANAGEMENT PLATFORM (CMP), Technical Section added in its entirety. (SEE ATTACHED AMENDMENT FOR CHANGES) *** 18 September 2026 - Amendment W9127N26BA0240004 Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement *** This amendment effects changes to the Block 14 (Description of Amendment/Modification): Solicitation Specifications, Section 31 68 13.00 99 – GROUND ANCHORS, Part 1 GENERAL, Paragraph 1.5.2 Qualifications are changed as detailed in the SUMMARY OF CHANGES. Solicitation Specifications, Section 31 73 20.00 99 – JET GROUTING, Part 1 GENERAL, Paragraph 1.7.1 Qualifications are changed as detailed in the SUMMARY OF CHANGES. Solicitation Specifications, Section 00 73 00 – Supplementary Conditions, Paragraph L. - COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK (APR 1984), the Period of Performance is amended as detailed in the SUMMARY OF CHANGES. This will allow for work to occur during the 2029 and 2030 In Water Work Window years. Environmental permits remain unchanged by this amendment. Marine Mammal protections as listed in the specification, and as governed by the IHA, included with the Attachments, remain in effect for the permitted years. No in water work, that is governed by IHA, will be allowed beyond the IHA permit years allowed. (SEE ATTACHED AMENDMENT FOR CHANGES) *** 09 September 2026 - Amendment W9127N26BA0240002 Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement *** This amendment effects changes to the Block 14 (Description of Amendment/Modification): Solicitation Specifications, Section 01 57 19.00 25 - TEMPORARY ENVIRONMENTAL CONTROLS, Part 3 EXECUTION, Paragraph 3.4.3 PROFESSIONAL ARCHAEOLOGICAL MONITOR. (SEE ATTACHED AMENDMENT FOR CHANGES) *** 03 September 2026 - Amendment W9127N26BA0240002 Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement*** This amendment effects changes to block 13 of Standard Form 1442, the Solicitation Specifications, Section 00 21 13 – Instruction to Bidders, and Section 00 21 00 – Instructions. Additionally, it extends the solicitation period and provides…

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