BRIDGE RAIL LIGHTS SCRUBBED MECHANICALLY

LIGHTING FOR THE DECK OF THE SAN MATEO--HAYWARD BRIDGE OVER SAN FRANCISCO BAY IS PROVIDED BY A SEVEN- MILE LONG CONTINUOUS STRETCH OF FLUORESCENT LAMPS ATOP A THREE-FOOT HIGH MEDIAN BARRIER. THE LENSES ARE SOILED BY SALT SPRAY AS WELL AS BY OIL AND DUST THROWN UP BY TRAFFIC. UNTIL RECENTLY THE LENSES WERE SCRUBBED BY A PROCEDURE THAT REQUIRED THREE DAYS TO COMPLETE. A LOCAL MAINTENANCE FOREMAN HAS DESIGNED A SPRING-LOADED SOFT PLASTIC BRUSH, MOUNTED ON THE FRONT END OF A DUMP TRUCK, THAT HAS 12-INCH BRISTLES EXTENDED TO 26 INCHES OUTSIDE DIAMETER AND ROTATES AT 150 RPM. THE BRUSH, IN CONJUNCTION WITH OTHER ELEMENTS OF A CLEANING SYSTEM, MAKES IT POSSIBLE TO CLEAN BOTH SIDES OF THE BRIDGE (14 MILES) IN THREE HOURS.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1606878
• Publication Date: 1972-7

Media Info

• Features: Photos;
• Pagination: p. 82
• Serial:
  • Public Works
  • Volume: 103
  • Issue Number: 7
  • Publisher: Hanley Wood
  • ISSN: 0033-3840
  • Serial URL: http://www.pwmag.com

Subject/Index Terms

• TRT Terms: Cleaning; Lenses (Geology); Lighting equipment
• Old TRIS Terms: Lenses (Excluding soils)
• Subject Areas: Highways; Maintenance and Preservation; Vehicles and Equipment;

Filing Info

• Accession Number: 00219467
• Record Type: Publication
• Files: TRIS
• Created Date: May 15 1973 12:00AM