The Lærdal Tunnel is a road tunnel in Norway that is considered to be one of the longest road tunnels in the world. It is located in the municipality of Lærdal, about 90 kilometers (56 miles) northwest of the city of Bergen. The tunnel is 24.5 kilometers (15.2 miles) long and runs through the mountains of Western Norway.
The tunnel It was officially opened in 2000 and has significantly reduced travel time and improved safety for motorists. It is equipped with lighting, ventilation, and emergency telephones. The tunnel is also equipped with an automated speed control system and vehicles are monitored by CCTV.
Although there are longer railway tunnels, such as Seikan in Japan or the one linking the United Kingdom and France, Lærdal could be the longest road tunnel in the world. It has become a source of pride for locals and a typical tourist destination in Norway for foreigners.
|Length||24,5 kilómetros (15.2 miles)|
|Built in||From 1995 to 2000|
|Inauguration||November 27, 2000|
|Maximum height of the drilled mountain||1.809 meters|
|Spilled cement||35.000 m2|
|Perforated surface||2.5 million cubic meters
|Traffic||1,000 vehicles daily
The Lærdal tunnel was built to avoid crossing a mountainous part of the country made up of narrow, outdated and unsafe roads. As a result, in 1975, the Norwegian Parliament decided that the road linking Oslo and Bergen should have the current route. In 1992, the Parliament confirmed that decision and made the additional decision that the road should pass through a tunnel between Lærdal and Aurlandsvangen. Thus, the Lærdal tunnel was built between 1995 and 2000, and cost approximately 115 million Euros.
The tunnel is a key strategic point for connecting Norway’s two most populous cities, Bergen in the west and Oslo in the east, by road. It is especially important for winter traffic, when the mountain passes linking the two cities are closed due to snow. The mountains above the tunnel reach elevations of up to 1,800 meters, and the road linking Aurlandsvangen and Lærdal, called Snøvegen or Snow Road, is open only during the summer months, making it impossible to cover the route in winter. A 2.1 kilometer access tunnel was constructed from a lateral valley that allowed operators to drill from four different locations, significantly shortening construction time.
The Lærdal Tunnel is a popular tourist attraction, and many visitors take the opportunity to drive through the tunnel to experience the unique and impressive engineering feat. The tunnel is also popular with hikers and cyclists, who can use the tunnel’s pedestrian and bike paths to cross the mountains. Overall, the Lærdal Tunnel is an impressive and important transportation route that has greatly improved travel and connectivity in Norway.
Air cleaning in the tunnel is achieved in two ways: ventilation and purification. For ventilation, there are two large fans that suck in the air at each entrance, expelling the contaminated air through the side ventilation tunnel named above. For purification, an air treatment plant was built in the tunnel (it is the first tunnel in the world with this equipment). This plant removes dust and nitrogen dioxide from the air flowing through the tunnel.
The tunnel is of great importance for the municipality of Aurlandsvangen, as it means that it is no longer isolated and connects it with other surrounding municipalities such as Lærdal, Årdal, Sogndal, Luster, Leikanger and Balestrand.
To break up the monotony of driving during the 20-minute journey, the tunnel has been divided into four sections by creating three large caverns, one at each end and one in the center, illuminating them in such a way as to make it appear as if you are driving in daylight.
For the construction of the tunnel, a total of 2.5 million cubic meters of rock was extracted from the mountain and used to build part of the new road between Flåm and Aurlandsvangen, and to construct a pedestrian and bicycle path along the Aurlandsvangen fjord.
Safety in the Laerdal Tunnel
At 24.5 kilometers, Lærdal is not only the longest in the world, it is also one of the safest, in addition to all of the above, all of these safety measures were taken into account during construction:
- Telephones every 250 meters
- Fire extinguishers every 125 meters, more than any normal tunnel.
- When an emergency telephone is used, STOP signs and “Turn around and leave the tunnel” signs are illuminated.
- 15 areas adapted to allow trucks and buses to turn and go in the opposite direction
- 2 safety monitoring centers installed in Bergen and Lærdal.
- Entering and leaving vehicle counter.
In short, if you are travelling Norway and even more if you have your own car or a rental car, remember that you are within reach of living the experience of crossing the longest tunnel in the world.
Road maps and guides of Norway
If you are planning to travel to Norway and even more if you want to do it by road, these maps and guides of Norway may be useful for you: