Tunnel
A typical urban transportation tunnel in the United States costs approximately $1-2 billion per mile to construct, representing the market value for a standard-length segment using modern tunneling methods.
Estimated value as of 2026 · Source: https://www.tunnelsandtunnelling.com/analysis/tunnelling-costs-and-production-ra…
Fun Fact
Tunnels in New York cost up to 10 times more per mile ($1.5-2.5B) than those in India or China ($100-200M), largely due to high soft costs like regulations and labor.
Price History
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