The $3.5 billion tunnel, touted as California's longest ever, will see its final design, property acquisition and environmental permitting carried out between 2026 and 2031.
California's Longest Tunnel Project Set for $3.5B Development by 2031
Design, land purchase and permits for the $3.5 billion tunnel will proceed from 2026 to 2031.
Key takeaways
- The tunnel is billed as California's longest ever.
- The project cost is $3.5 billion.
- Final design work will run from 2026 to 2031.
- Property acquisition is included in the 2026-2031 timeline.
- Environmental permitting will also continue through 2031.
Why it matters
The extensive construction schedule will affect landowners, regulatory agencies and communities along the tunnel's route.
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