BRIDGE RAIL DELINEATION

Illuminating a narrow highway bridge to aid drivers at nighttime is usually a costly proposition; therefore, a more cost-effective approach is needed. After a number of bridge rail reflectors were evaluated, the Stimsonite 967 was found to be the best. One hundred of these markers were installed at a test site for further evaluation. In addition, 3M Stamark N360 pavement tape was laid down as one-half of the double barrier centreline across the bridge. After almost one year of monitoring, the results demonstrate successfully the use of the reflectors in delineating the bridge at night. A couple of minor problems occurred: about 15% of the markers were broken off by snowploughing, and frequent washing of the markers was required. The 3M pavement tape was brighter than paint, but its high cost was not justified because of poor durability. Up to 30% of the tape was lifted off or worn out. The marker delineation is recommended for future applications at other long narrow bridge sites, but the centreline tape is seen not to be cost-effective. (Author/TRRL )

• Corporate Authors:

  Alberta Transportation and Utilities

  250, 11044-82 Avenue
  Edmonton, Alberta T6G 0T2  Canada 
• Authors:
  • Lo, A
• Publication Date: 1990-5

Media Info

• Pagination: 5 p.

Subject/Index Terms

• TRT Terms: Bridge railings; Highway delineators; Night; Reflectorized materials; Road marking tapes
• Geographic Terms: Canada
• Old TRIS Terms: Delineators (Traffic); Traffic marking tapes
• ITRD Terms: 3455: Bridge; 5910: Durability; 594: Marker post; 4523: Reflectorized material
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00619678
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Report/Paper Numbers: ABTR/RD/TM
• Files: ITRD, TRIS
• Created Date: Mar 31 1992 12:00AM