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Tunnel Construction Tenders


138 Record Matches Your Request
Showing 1 - 10 Records
Tender Notice Type: Procurement News Country : Australia
Tender Category: Infrastructure - Tunnels
Description: Australia : Westconnex new M5 open tonight
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Tender Notice Type: Procurement News Country : United Kingdom
Tender Category: Infrastructure - Tunnels
Description: United Kingdom : Tunnel Boring Machine Charlotte completes connection tunnel drive
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Tender Notice Type: Procurement News Country : Colombia
Tender Category: Infrastructure - Tunnels , Infrastructure and construction
Description: Colombia : The Pacific Project 3 records an advance of 78%
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Tender Notice Type: Procurement News Country : Portugal
Tender Category: Infrastructure - Tunnels
Description: Portugal : Intervention In The Pragal Tunnel
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Tender Notice Type: Procurement News Country : United Kingdom
Tender Category: Infrastructure - Tunnels , Water and Sanitation
Description: United Kingdom : Fatbergs weighing more than three blue whales cleared in record London sewer clean-up
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Tender Notice Type: Procurement News Country : Australia
Tender Category: Infrastructure - Tunnels
Description: Australia : First drive through new M5 tunnels
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Tender Notice Type: Procurement News Country : Australia
Tender Category: Infrastructure - Tunnels
Description: Australia : Meeting Of The Roadheaders At The New Town Hall Station
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Tender Notice Type: Procurement News Country : Colombia
Tender Category: Infrastructure - Tunnels
Description: Colombia : Restart of infrastructure works continues to boost the national economy
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Tender Notice Type: Procurement News Country : United Kingdom
Tender Category: Infrastructure - Tunnels
Description: United Kingdom : Work continues to protect the railway at St Catherine’s tunnel, Guildford
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Tender Notice Type: Procurement News Country : United Kingdom
Tender Category: Infrastructure - Tunnels
Description: United Kingdom : 175-year-old hillside tunnel repaired from the air
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Tunnels are dug in various types of materials, from soft clay to hard rock, and the method of excavation depends on the ground conditions.

Cut-and-cover is a simple method of construction for shallow tunnels where a trench is excavated and roofed over. A strong overhead support system is required to carry the load of the covering material.

The Seikan Tunnel in Japan is the longest rail tunnel in the world at 53.9 km (33.5 mi), of which 23.3 km (14.5 mi) is under the sea.

The Channel Tunnel between France and the United Kingdom under the English Channel is the second-longest, with a total length of 50 km (31 mi), of which 39 km (24 mi) is under the sea.

The Lötschberg Base Tunnel in Switzerland is the longest land tunnel, with a total of 34.5 km (21.4 mi).
 
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