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I-5 Columbia River Bridge Cost Jumps to $14.4 Billion as Governors Pivot to Core Build, Target 2028 Start

State leaders narrow the first phase to a fixed-span crossing with light rail to sustain federal support.

Overview

  • New estimates put the project at $13.5 billion to $15.2 billion, with a most likely cost of $14.4 billion, up from prior $5–$7.5 billion projections.
  • The initial build is refocused on replacing the two river spans and extending light rail to Vancouver, with interchange and Hayden Island work deferred to later phases.
  • The U.S. Coast Guard approved a fixed-span design, a key clearance that avoids an estimated $1.7 billion premium for a movable span.
  • About $5.45 billion is identified to date, including roughly $2.1 billion in federal grants, and a financing plan due by late September is required to unlock a $1.5 billion federal capital grant.
  • Officials plan to award a contract next year and begin construction in 2028 for a six- to seven-year build, with tolls managed by Washington expected to provide at least $1.2 billion and reported to begin in 2027 or as early as late 2026.