3 ms·
given the thousands of road miles in tunnels that already exist The Big Dig in Boston cost what, $20Bn? For less than 4 miles of road tunnel? The maths just do
by gaius 9y ago
given the thousands of road miles in tunnels that already exist
The Big Dig in Boston cost what, $20Bn? For less than 4 miles of road tunnel? The maths just doesn't work. What does average road cost per mile?