Public Works

I-405, NE 132nd Street Interchange Project

Contract summary:
This project proposes to construct a new half diamond interchange at NE 132nd Street, new fish passable culverts along the I-405 corridor, and improve local roadway access within project limits.

• Public Works Publication Date: September 15, 2020
• Contract status: Awarded
• Contract : 9573
• County: King County
• Submittal due date and time: Thursday, June 17, 2021 - 11:59pm PDT
• Estimated value: $50,000,000 - $55,000,000
• Funding source: A state project with a 26% voluntary minority/small/veteran/women business enterprise goal
• Contact: Evelyn Pao, Project Engineer, PaoEC.gov,

• Overview and related information for the project phase and scope.

• Details related to required submittals for proposals and bids.

• Links to relevant procurement documents and addenda.

• Award status: Awarded 7/29/2021
• Awarded to: Graham Contracting, LTD., 13555 SE 36th ST, Bellevue, WA
• Award amount: $50,

• Submitted SOQs and Proposals (FTP DIRECTORY) - Posted 8/30/2021

• Apparent Best Value Determination (PDF 67.5KB) - Posted 7/14/2021
• Bid Tabulation (PDF 122KB) - Posted 7/14/2021

• Instructions to Proposers (FTP Directory) - Posted 7/6/2021
• Chapter 1 (PDF 2.7MB) - Posted 7/6/2021
• Chapter 2 PDF (6.4MB) - Posted 7/6/2021
• Appendices (FTP Directory) - Posted 7/6/2021

• Q&A 1 (PDF 195KB) - Posted 3/19/21
• Q&A 2 (PDF 184KB) - Posted 4/2/2021
• Q&A 3 (PDF 176KB) - Posted 4/16/2021
• Q&A 4 (PDF 109KB) - Posted 4/23/2021
• Q&A 5 (PDF 123KB) - Posted 4/30/2021

• Addendum 1 (FTP Directory) - Posted 3/5/2021
• Addendum 2 (FTP Directory) - Posted 3/12/2021
• Addendum 3 (FTP Directory) - Posted 3/19/2021
• Addendum 4 (FTP Directory) - Posted 3/26/2021
• Addendum 5 (FTP Directory) - Posted 4/2/2021
• Addendum 6 (FTP Directory) - Posted 4/9/2021
• Addendum 7 (FTP Directory) - Posted 4/16/2021
• Addendum 8 (FTP Directory) - Posted 4/23/2021
• Addendum 9 (FTP Directory) - Posted 4/30/2021
• Addendum 10 (FTP Directory) - Posted 5/7/2021
• Addendum 1 (FTP Directory) - Posted 5/20/2021

• Instructions to Proposers (FTP Directory) - Posted 2/12/2021
• Chapter 1 (PDF 1.9MB) - Posted 2/12/2021
• Chapter 2 (PDF 4.4MB) - Posted 2/12/2021
• Appendice (FTP Directory) - Posted 2/12/2021

• Voluntary Proposers Meeting Presentation (PDF 18MB) - Posted 2/19/2021
• Voluntary Proposers Meeting Sign-In Sheet (PDF 82KB) - Posted 2/19/2021
• Voluntary Proposers Meeting and MSVWBE Networking Session (PDF 84KB) - Posted 2/8/2021

• Procurement Update (PDF 168KB) - Updated 2/8/2021

• Short List Letter (PDF 134KB) - Posted 12/29/2020

• Submitters List with Single Point of Contact (PDF 88KB) - Posted 11/5/2020

• MSVWBE Meeting Presentation (FTP Directory) - Posted 10/6/2020
• MSVWBE Meeting Sign-In Sheet (FTP Directory) - Posted 10/6/2020

• Addendum 1 (FTP Directory) - Posted 9/28/2020
• Addendum 2 (FTP Directory) - Posted 10/15/2020

• Q&A 1 (PDF 86KB) - Posted 10/9/2020
• Q&A 2 (PDF 88KB) - Posted 10/15/2020

• Request for Qualifications (PDF 46KB) - Posted 9/15/2020
• Fillable Forms (FTP Directory) - Posted 9/15/2020

• Voluntary Submitters Meeting Flyer (PDF 275KB) - Updated 9/14/2020
• Zoom Registration Information (PDF 12KB) - Posted 9/10/2020
• Sign-in Sheet (PDF 84KB) - Posted 9/24/2020
• Meeting Presentation (PDF 2.4MB) - Posted 9/24/2020

• Pre-Advertisement Notice (PDF 111KB) - Posted 8/14/2020
• Fact Sheet (PDF 978KB) - Posted 8/17/2020
• Conceptual Plan (FTP Directory) - Posted 9/10/2020
• I-405/NE 132nd Street Interchange Concept Visualization (You Tube) - Posted 9/16/2020
• MSVWBE Information Session (PDF 293KB) - Posted 9/21/2020

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