Is such a tunnel technically feasible?
Such deep-bore tunnels have been completed or are under construction in several European cities. Urban automobile tunnels have recently been built in: • Lyons, France – the East-West Tunnel • Marseilles, France – the Pardo-Carenage Tunnel • Baden-Baden, Germany – the Michaelstunnel • Brussels, Belgium and are currently planned, under construction, or already in use in several other cities in affluent, developed countries elsewhere. The 6-mile long Versailles Tunnel in Paris is a very good example, since it is a brand new, cylindrical, deep-bore, autos-only tunnel. The Automobile Association Limited of England describes the Versailles Tunnel as follows:Costs have been radically reduced by building the tunnel for light vehicles only. This means dual 3-lane carriageways can fit in a single bored tunnel. The flexible boring machine used can cut through terrain from wet, sandy soil, to hard-packed extremely resilient lime. Unlike Boston’s “Big Dig,” some 90% of construction is underground a
Such deep-bore tunnels have been completed or are under construction in several European cities. Urban automobile tunnels have recently been built in: • Lyons, France – the East-West Tunnel • Marseilles, France – the Pardo-Carenage Tunnel • Baden-Baden, Germany – the Michaelstunnel • Brussels, Belgium and are currently planned, under construction, or already in use in several other cities in affluent, developed countries elsewhere. The 6-mile long Versailles Tunnel in Paris is a very good example, since it is a brand new, cylindrical, deep-bore, autos-only tunnel. The Automobile Association Limited of England describes the Versailles Tunnel as follows: Costs have been radically reduced by building the tunnel for light vehicles only. This means dual 3-lane carriageways can fit in a single bored tunnel. The flexible boring machine used can cut through terrain from wet, sandy soil, to hard-packed extremely resilient lime. Unlike Boston’s “Big Dig,” some 90% of construction is underground
