ECONOMIC CONSIDERATIONS IN THE DESIGN OF THE NORTHUMBERLAND STRAIT CROSSING
THE NORTHUMBERLAND STRAIT CROSSING WILL CARRY A TWO-LANE HIGHWAY WHICH CAN LATER BE CONVERTED TO FOUR LANES AND A SINGLE TRACK RAILROAD. TRAFFIC STUDIES HAVE INDICATED THAT FOUR LANES OF TRAFFIC CAPACITY WILL BE REQUIRED WITHIN 20 YEARS. THE COMPONENTS OF THE CROSSING ARE: PRINCE EDWARD ISLAND APPROACH ROAD - 4 MILES; TUNNEL COMPLEX - 13,000 FEET; BRIDGE - 20,000 FEET; CAUSEWAY - 10,400 FEET; NEW BRUNSWICK APPROACH ROAD - 4.3 MILES. THE LENGTHS OF THE BRIDGE AND CAUSEWAY ELEMENTS WERE SELECTED ON THE BASIS OF HYDRAULIC ECONOMIC REQUIREMENTS, WHILE THE LENGTH OF THE TUNNEL IS GOVERNED BY THE NAVIGATION OPENING AND RAILWAY GRADIENT REQUIREMENTS. IN THE DESIGN OF THE CROSSING, THE PARTICULARLY SEVERE CLIMATIC CONDITIONS, INCLUDING WAVES AND FLOATING ICE, HAVE REQUIRED SPECIAL DESIGN PROCEDURES NOT NORMALLY ASSOCIATED WITH ROAD AND BRIDGE WORK. AS A RESULT, THE VARIOUS SOLUTIONS OF ENGINEERING PROBLEMS HAVE INVOLVED SPECIAL EMPHASIS ON THE DESIGN FACTORS. IN GENERAL, THE DESIGN HAS BEEN DEVELOPED AT MINIMUM CAPITAL COST FOR A GIVEN SOLUTION, AND IN THIS PROCESS MANY STUDIES HAVE BEEN MADE, ON AN ECONOMIC BASIS, BETWEEN ALTERNATIVES TO ASSESS THE POSSIBLE BENEFITS TO BE OBTAINED. /AUTHOR/
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Supplemental Notes:
- pp 217-227, 5 FIG
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Authors:
- Clarke, G T
- Gordon, ELM
- Publication Date: 1966-9
Media Info
Subject/Index Terms
- TRT Terms: Causeways; Design; Economic benefits; Economic factors; Highway bridges; Highway capacity; Highway design; Highways; Railroad tracks; Statistics; Traffic lanes; Tunnels
- Uncontrolled Terms: Design criteria; Future growth
- Old TRIS Terms: Economic considerations; Highway statistics
- Subject Areas: Bridges and other structures; Data and Information Technology; Design; Economics; Highways; Railroads;
Filing Info
- Accession Number: 00208183
- Record Type: Publication
- Source Agency: CANADIAN GOOD ROADS ASSOCIATION
- Files: TRIS
- Created Date: Jan 30 1994 12:00AM