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SR 710 Freeway Tunnel

A twin-tube, double-deck freeway tunnel, approx. 17.8 m (58.5 ft) in diameter and 7.9 km (4.9 mi) in length, was one of four tunnel concepts under investigation in Southern California.
Client:
METRO Metropolitan Transport Authority, Los Angeles
Location:
USA
Time frame:
2012–2014
  • Gap closure tunnel
  • Twin-tube tunnel
  • Double-deck tunnel
  • Four lanes per deck
  • Diameter: approx. 17.8 m (58.5 ft)
  • Management Consulting
  • Engineering

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7.9 km Long Tunnel in North America