Norway's tunnel: < $7M/km
Seattle's tunnel: $1,167M/km
Well over 100x more expensive per kilometer.
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The Lærdal tunnel (left) in Norway is the longest tunnel in the world, at 24km. It cost $164 million in today's dollars. I drove it yesterday.
The State Route 99 tunnel (right) in Seattle, where I normally live, is 3km long. It cost $3.5 billion.
Both were completed in 5 years.
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