Use of OGFC to Address Drainage Issues for George Massey Tunnel

The George Massey Tunnel is a major Fraser River Crossing on Highway 99 in Lower Mainland Vancouver. It is a 4- lane tunnel with an average daily traffic of about 100,000 vehicles. The tunnel was constructed in 1950's and is close to the end of its service life. The Province is considering replacing the existing tunnel with a new tunnel or a bridge in the near future. Therefore, the Ministry was looking at potential solutions to fix the water seepage issues for the 5-10- year term. The tunnel approaches have been exhibiting water seepage issues for the past several years. The river water seeps through the joints of the approach slabs, and the pavement surface stays wet at most times. Water seepage poses potential safety concerns during the winter season. Continuous water seepage results in poor pavement performance. Different options were considered as possible rehabilitation solutions. Considering potential of clogging of the voids in the OGFC surface layer, a solution involving the placement of a drainage layer on top of the approach slab followed by placement of two lifts of conventional HMA were constructed. This allowed for the seeping water to flow through the drainage layer without reaching the pavement surface.

Language

  • English

Media Info

  • Media Type: Print
  • Pagination: pp. 159-173.
  • Monograph Title: Proceedings of the Sixty-Sixth Annual Conference of the Canadian Technical Asphalt Association (CTAA): Cyberspace

Subject/Index Terms

Filing Info

  • Accession Number: 01839200
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada
  • Files: ITRD, TAC
  • Created Date: Mar 22 2022 2:50PM