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California Department of Transportation US Highway 50 Multimodal Corridor Enhancement and Rehabilitation Project

CWE provided topographic surveying for Caltrans as part of their $400 million reconstruction of a portion of the US 50 freeway.  The project included over nine miles of freeway reconstruction from Watt Avenue to the Interstate 5 interchange.  Project features included new High Occupancy Vehicle (HOV) lanes, soundwalls, road surface replacement, road and bridge widening, striping, signage, ramp reconfiguration, and drainage and utility relocation.  CWE completed approximately seven miles of field survey along the project, locating topographic features prior to construction took place.  Surveying took place within the outside travel lane, the freeway shoulder, and the undeveloped portion of Caltrans right-of-way beyond the traveled way.  CWE also verified control points needed for the highway scanning vehicles which would collect additional data within the traveled lanes.  A three-man survey crew was onsite nearly every weeknight – work was primarily performed overnight to increase safety and efficiency – for a three-month period.  Of paramount importance throughout the project was safety.  CWE had to carefully follow special Caltrans procedures throughout the fieldwork to ensure the safety of every crew member throughout the duration of the project.  CWE used Trimble equipment to conform to the standards of Caltrans surveying and provided all the survey information to the client in a convenient package that could be seamlessly incorporated into their design software.  Additionally, the schedule proved very demanding, and CWE accommodated this schedule by dedicating specific personnel exclusively to the project throughout the field survey portion.  Once construction began on the project, the client utilized CWE for quality verification surveying, where we resurveyed stakes in the field to provide an extra level of assurance that they were placed within the tolerances allowed for highway construction.

Project Tasks

  • Topographic surveying for Caltrans’ $400 million reconstruction of a portion of the US 50 freeway.
  • Over nine miles of freeway reconstruction from Watt Avenue to the Interstate 5 interchange.
  • New High Occupancy Vehicle (HOV) lanes
  • Soundwalls
  • Road surface replacement
  • Road and bridge widening
  • Striping
  • Signage
  • Ramp reconfiguration
  • Drainage and utility relocation
  • Approximately seven miles of field survey along the project.
  • Surveying within
    • Outside travel lane
    • Freeway shoulder
    • Undeveloped portion of Caltrans right-of-way.
  • Verification of control points for highway scanning vehicles.
  • A three-man survey crew onsite nearly every weeknight for a three-month period.
  • Special Caltrans procedures followed for crew safety throughout the fieldwork.
  • Use of Trimble equipment to conform to the standards of Caltrans surveying.
  • Delivery of all survey information to the client in a format compatible with their design software.
  • Dedication of specific personnel exclusively to the project due to demanding schedule.
  • Quality verification surveying for construction, including resurveying stakes in the field for added assurance.