USA

Second Midtown Tunnel in Virginia: All-Concrete Immersed Tube Tunnel

Altogether eleven tunnel segments with an average length of 106 m were concreted in the dry dock using  formworks Quelle/credit: Doka
Altogether eleven tunnel segments with an average length of 106 m were concreted in the dry dock using  formworks
Quelle/credit: Doka
The dry dock in Sparrow’s Point is flooded after completion of the tunnel elements Quelle/credit: Elizabeth River Tunnels Projects
The dry dock in Sparrow’s Point is flooded after completion of the tunnel elements
Quelle/credit: Elizabeth River Tunnels Projects
The tunnel segments are ready for transport to the Elizabeth River Quelle/credit: Elizabeth River Tunnels Projects
The tunnel segments are ready for transport to the Elizabeth River
Quelle/credit: Elizabeth River Tunnels Projects
The tunnel sections were transported 320 km by sea to their intended location Quelle/credit: Jay Westcott
The tunnel sections were transported 320 km by sea to their intended location
Quelle/credit: Jay Westcott

The Second Midtown Tunnel is an immersed tube tunnel, which will link Norfolk and Portsmouth in the US state of Virginia. The road tunnel will consist of eleven segments, cast in the dry dock in Baltimore County and then transported about 320 km south by sea and into the Elizabeth River to be submerged at depths of up to 29 m.

Elizabeth River Tunnels Project

The Midtown Tunnel in the Elizabeth River has already been in operation for more than 50 years. With about one million vehicles per month, the link between Norfolk and Portsmouth is one of the most heavily trafficked roads east of the...

Find out more in

tunnel 04/2015

Find out more in

tunnel 04/2015

Ressort:  Absenktunnel | Immersed Tube Tunnels
subscription Content

Related articles:

Issue 08/2014 Sweden

Marieholm Tunnel – Immersed Tunnel in Gothenburg

The Marieholm Tunnel in Gothenburg is a road tunnel with three lanes per direction and an evacuation tunnel. It is devised for more than 100 years service life and is to be built as an immersed tunnel...

more
Issue 07/2009 Belgium

Liefkenshoek Railway Tunnel in Antwerp

On account of the intensive use of the Port of Antwerp/B, especially on the left bank of the River Schelde where 7.5 mill. containers are handled each year, a considerable increase in goods...

more
Issue 06/2013

Marmaray Project with Bosporus Tunnel in Istanbul/TR – immersed Tunnel

Whereas other metropolises display concern that their commuter transportation systems might suddenly come to a halt, this situation is a daily one in Istanbul. Even on normal weekdays, it is advisable...

more
Issue 06/2020 Italy

Brenner Base Tunnel: First Breakthrough at the Isarco River Underpass

Starting from one of the four shafts built on the Isarco River Underpass construction site, the underlying aquifer and alluvial deposits below the riverbed were frozen by injecting liquid nitrogen...

more
Issue 03/2020 Germany | Deutschland

Decision on the New Fehmarn Sound Crossing: Construction of an Immersed Tunnel and Preservation of the Bridge

In March 2020, a solution for the new crossing of the Fehmarn Sound (Fehmarnsund) was found; the German Federal Ministry of Transport, the state of Schleswig-Holstein and Deutsche Bahn compared all...

more