US-23 LANDSLIDE REPAIR – FLOYD COUNTY, KY

ABOUT THIS PROJECT

US-23 is the major North-South artery in the Big Sandy River Valley and is the primary route for the transport of all goods and services in the region. Constructed in the 1970s and parallel to the river, it was carved from steep slopes that created terraced highwalls up to 200 feet in height. A stretch of this road, near Ivel, KY, was carved through unstable geology and has caused transportation maintenance engineers challenges since its construction. In the mid-2010s, landslides occurred on these terraced highwalls, causing large rocks to flow down the mountain–blocking northbound traffic on two separate occasions. On both occasions, Jigsaw was asked to work with state transportation personnel to fix the slides. 

 

Collaborating with the highway engineers, Jigsaw’s team developed a plan to repair the damage safely while allowing motorists to use this major roadway. The remote location of these slides resulted in limited site access and dictated the size and type of machinery that could be used to repair them. Jigsaw utilized specialized track-type haul trucks and long-reach excavators to work precariously above the highway while traffic continued below. Although the work was often hazardous, Jigsaw’s team completed the repairs safely and with minimal interruptions to the traffic hundreds of feet below. This work was recognized for its degree of difficulty in a report presented to highway transportation officials. 

PROJECT ELEMENTS

  • Traffic control
  • Site clearing
  • Controlled blasting
  • Steep slopes
  • Mass excavation/slide repair
  • Revegetation

PROJECT PHOTOS