Roads and Highways

Caltrans District 1 - Three Bridges Replacement Project

The ALTA team completed an archaeological evaluation (Phase II) study of three cultural resources as part of the Three Bridges Replacement Project in Humboldt County, California. Even with critical timelines and requirements, the quality of our work exceeded professional standards. With our support, Caltrans met the state and federal regulatory requirements needed to initiate the bridge replacement project.

Decorative rock background

Services Provided

  • Site Documentation
  • Archaeological Inventory / Survey
  • CEQA, NEPA, and Section 106 Compliance
  • Archive Research
  • Resource Testing and Evaluation
  • Native American Outreach
  • Prehistoric Archaeology
  • GPS Data Collection & GIS Data Delivery
  • Field Excavations
  • Archaeological Research Design and Treatment Plans

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Calpine Geothermal Pipeline Surveys

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Riverview Apartment Development and Wetland Mitigation Project

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