The Corbulo tunnel between the A4 and the A44 close to Leiden is open to visitors after years

The Corbulo tunnel close to Leiden has been open to visitors since this morning. The two.5 kilometer lengthy tunnel offers a greater connection to and from the Leiden space. The development took a few years and nearly two years longer than anticipated, he wrote Western Broadcasting.

The brand new tunnel is a part of the N434, the brand new regional street that connects the A4 and A44 motorways. The brand new street, which is predicted for use by 9 million automobiles a yr, ought to cut back visitors congestion in Leiden. The connection is a part of the so-called RijnlandRoute between Katwijk and Leiden.

In 2014 it was determined to construct the N434, building began three years later. In response to Deputy Frederik Zevenbergen, this was a big challenge by which eighty specialists from nineteen totally different nations participated. “We had divers from Denmark and tunnel specialists from France,” he says.

The Corbulo tunnel has two tunnel tubes 2250 meters lengthy, every with two tracks. The deepest level is greater than 30 meters under NAP. The tunnel was dug with a particular drilling machine. Zevenbergen finds it “great goosebumps” that the tunnel has lastly been used.

All the challenge value about one billion euros. The tunnel is known as after a Roman basic who ordered a canal to be dug to attach the Rhine and the Meuse, within the space the place the tunnel is now situated.

There have been a number of issues and incidents throughout building. In 2019 died building employee when an anchor plate got here unfastened within the tunnel shaft throughout drilling operations.

Three years later, a fireplace broke out in sheds on the work web site. Varied technical installations, instruments and supplies have been broken.

In whole, in accordance with a analysis report reported by Omroep West 41 occasions throughout building. Researchers decided that the area of South Holland sufficient management labored on the protected building of the Corbulo tunnel.