PROTECTION OF ENVIRONMENT IS VITAL IN PORTUGAL'S ROAD BUILDING PROGRAM

The far-reaching effects of highway construction are illustreated in a description of a construction project on Motorway A1, the Auto-Estrada do Norte in Portugal. The motorway was designed to cross the Mondego Valley, near Coimbra, where the low-lying agricultural areas were subject to frost and fog rolling down from the mountains. Studies showed that the cold air would be dammed up on the flat ground if the road was built on a raised embankment, as planned, and the agricultural land between the road and the mountains would be virtually useless. As a result, the plans were changed, and the road was built on a combination embankment and viaduct. The cold air was able to flow freely through the viaduct and dissipate without causing additional harm to the farm lands.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/25073860
• Corporate Authors:

  International Road Federation

  525 School Street, SW
  Washington, DC  United States  20024
• Publication Date: 1984-3

Media Info

• Features: Photos;
• Pagination: p. 3
• Serial:
  • World Highways/Routes du Monde
  • Volume: 35
  • Issue Number: 3
  • Publisher: Route One Publishing Limited
  • ISSN: 0964-4598
  • Serial URL: http://www.worldhighways.com

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Cold weather; Environmental protection; Farming; Highway design; Structural design; Viaducts; Wind
• Old TRIS Terms: Agricultural land; Currents
• Subject Areas: Bridges and other structures; Design; Environment; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00386803
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 30 1984 12:00AM