Skip Top Navigation

Research Reports

Hot In-Place Recycling: SR-97 West Wapato Road to Lateral A Road (SB)


The construction of the Washington State Department of Transportation's first hot in-place recycling project is documented. The project is located in the eastern portion of the state southwest of Yakima on SR-97. The two southbound lanes for approximately 5.5 miles were recycled using the Pyrotech brand of equipment.

The report also includes a description of the hot in-place recycling process, equipment specifications, a discussion of the limitations and benefits of the process, and a survey of other state DOT's experience with the process.


  • Date Published: April, 1996
  • Publication Number: WA-RD 408.1
  • Last Modified: November 16, 2007
  • Author: Linda M. Pierce.
  • Originator: Washington (State). Dept. of Transportation. Materials Laboratory.
  • # of Pages: 70 p., 6,961 KB (PDF)
  • Subject: Asphalt concrete, Benefits, Data collection, Equipment, Field tests, Hot mix paving mixtures, Pavement performance, Recycling, Rehabilitation (Maintenance), Specifications, State departments of transportation, Surveys.
  • Keywords: Asphalt concrete, HIPR, in-place, recycling, SR 97, Yakima (Wash.)
  • Related Publications:

This abstract was last modified April 29, 2008