BOSPHORUS BRIDGE, ISTANBUL

THIS ARTICLE DESCRIBES THE BUILDING OF THE BOSPHORUS BRIDGE AND THE USE OF HIGH-PRESSURE SODIUM LAMPS FOR ITS LIGHTING. THE HISTORICAL BACKGROUND OF THE 1074M LONG SUSPENSION BRIDGE IS GIVEN. THE BRIDGE FLOOR IS OF BOX-GIRDER CONSTRUCTION AND IS SUSPENDED FROM FOUR 165M STEEL TOWERS. THE ROAD SURFACE COMPRISES A MIXTURE OF CONCRETE & ASPHALT. DIMENSIONS OF THE BRIDGE, WHICH HAS 6 MOTOR LANES AND A LOWER FOOTPATH, ARE INCLUDED. THE BRIDGE HAS TAPERED SIDES TO REDUCE WIND PRESSURE TO A MINIMUM. LIGHTING IS PROVIDED BY 400W SODIUM LAMPS MOUNTED ON 92M HIGH MASTS PLACED ON THE MEDIAN STRIP. THE 66 LIGHTING COLUMNS ARE SPACED AT 27M. LUMINANCE AND ILLUMINANCE ON THE ROAD SURFACE ARE 3.5 CD/M2 AND 45 LUX RESPECTIVELY. HIGH-PRESSURE SODIUM LAMPS PROVIDE LIGHTING FOR THE APPROACH ROADS AND THE TOLL WAITING AREA. THE TOWERS ARE FLOODLIT BY 2000W MERCURY LAMPS. PHOTOGRAPHS ILLUSTRATE THE LIGHTING SYSTEM.

  • Availability:
  • Corporate Authors:

    Foundation Prometheus

    P.O. Box 784
    Amsterdam,   Netherlands 
  • Publication Date: 1973

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 138-143
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00080873
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 26 1975 12:00AM