Language:
Englishen
United States
myGeobrugg

Registration

Do you have personal login information?

Register now
A company of the BRUGG Group
United States
Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg
Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg
Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg
Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg
Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg
Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg Kerenzerberg, Highway A3, Glarus Nord 2015 - Geobrugg

Kerenzerberg, Highway A3, Glarus Nord

view address in Google Maps  Share
Street
Gäsi
ZIP code
8757
Place
Filzbach
Country/Region
Switzerland
Year of installation
2015
Customer
FEDRO Federal Roads Office, Switzerland
Engineering
Project Partners Ltd Consulting Engineers, Grancia-Lugano, Switzerland
Contractor
CRESTAGEO, Chur, Switzerland
Protected object
Road, Railway
Systems
RXI-025, RXI-150, RXE-500, RXE-1000, RXE-3000, RXE-8000
Energy absorption capacity
2000 kJ, 500 kJ, 1000 kJ, 8000 kJ
System height
2.5 m, 3.0 m, 4.0 m, 5.0 m, 7.0 m
System length
14 m - 62 m
Corrosion protection
Galvanized, GEOBRUGG SUPERCOATING®
Other installed applications
Slope Protection
Situation

Highway A3 was opened in 1964 as a 2-lane road passing through the topographic bottleneck of the Walensee. The Walensee is one of the main thoroughfares between the Swiss plains and the mountainous regions and ski resorts. The roadway has always been exposed to rockfall and rockslides from the beginning. In 1986, due to increased traffic volume, one of the most frequented tunnels was expanded to four lanes. Naturally, geohazard protection measures were required to be installed along with the roadway expansion.

In 2012 it became apparent to the Swiss Federal Roads Office FEDRO that several hot spots for geohazards would require immediate maintenance to keep Highway A3 open. The identified hot spots include various tunnel entrances, steep slopes and sheer rock faces along the roadway. The project planning phase began in 2013, and by the end of 2015 the first protection systems of Geobrugg’s newest generation were installed.

Official project name at the FEDRO, Federal Office for Roads: Glarus Nord

Overall costs of the protection project (estimated in 2014): 11 Mio. Swiss Francs

Description

This description only details the northwest oriented tunnel entrances of Ofenegg and Kerenzerberg.

The overall project included a portfolio of Geobrugg flexible barrier systems protection measures to contain rockfall events. The selection was based on extensive rockfall analysis, taking into account bouncing heights as well as energy impacts. System strength, height and line lengths were set to maximize safety and optimize cost-effectiveness.

Above the two tunnel entrances the following Geoibrugg rockfall protection systems were installed in geographical order from southwest to northeast:

  • Barrier 1 :   RXE-500, height 3 m, length 31 m
  • Barrier 2 :   RXE-500, height 3 m, length 26 m
  • Barrier 3 :   RXI-150, height 4 m, length 55 m
  • Barrier 4 :   RXI-025, height 2.5 m, length 14 m
  • Barrier 5 :   RXE-1000, height 4 m, length 25 m
  • Barrier 8b : RXI-150, height 4 m, length 17 m
  • Barrier 8c : RXE-1000, height 4 m, length 25 m
  • Barrier 9 :   RXE-8000, height 7 m, length 62 m
  • Barrier 10 : RXE-3000, height 5 m, length 50 m

A movie of the 2015 RXE-8000 installation is available.

See also the slope protection of this site "Muehlehorn"

Your local contact

Head office and production
Head office and production
 
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Algodones NM 87001 / USA
Phone +1 505 771 4080
Mobile  

Contact form

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Mobile +1 860 377 3230

Contact form

Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Mobile +1 909 706 8964

Contact form

John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Mobile +1 505 220 1404

Contact form

Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Mobile +1 336 337 0945

Contact form

Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Algodones NM 87001 / USA
Phone +1 505 771 4080
Mobile +1 505 400 0796

Contact form

Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards, Geotechnical products, Aquaculture
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Mobile +1 503 423 7258

Contact form