Tunnels Under Construction |
| Guadarrama Railway, Spain |
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| Latest technology in tunnel boring makes roadway tunnels price competitive with traditional at-grade highway construction. |
North and south tunnel boring machines (top right and left pictures). |
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| TBM (tunnel boring machine) assembled in access shaft and portal crane. |
Prefabricated segments of the roadway tunnel make for quick construction. |
Source: Dragados |
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| A-86 Socatop Tunnel, Paris |
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| ITS (Information Technology Systems) is integral to the operation of roadway tunnels. |
Two level roadway tunnel with a total of six lanes. Cross section shows safety chamber. |
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37.9 Foot diameter tunnel boring machine. |
Source: Dragados |
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| Landsberg Parking Cavern, Germany |
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| Allows direct connection to underground parking which reduces congestion on surface streets. |
Source: Dr. Sauer Corporation |
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| "SMART" Tunnel, Kuala Lumpur - Malaysia |
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| 44.3-Foot diameter tunnel boring machine. |
Multi-functional tunnel designed to conduct traffic and water. |
Source: Dr. Sauer Corporation |
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