Spectra’s Construction Division provides a full range of civil and excavation services from small foundations and flatwork to extensive and complex equipment foundations as well as trenching, excavation, and underground utilities. We specialize in civil work involving and related to process piping, structural supports, ladders and stairs, equipment installation, and facility improvements.


  • Excavation
  • Site Preparation
  • Grading, Trenching, Shoring
  • Structural Concrete
  • Foundation

Services are available throughout California and Washington.

Spectra’s equipment is modern, high quality, and regularly inspected, to ensure safety and performance. In addition, Spectra is affiliated with the Bragg family of companies which has access to a large fleet of cranes, rigging, and heavy equipment transportation services.

Spectra contracts under all contemporary contracting forms including, lump sum, time & material, unit price, and cost-plus fixed fee.

Spectra’s workforce is comprised of highly skilled journeymen and apprentices, who are represented by the Building Trades Unions. We are signatory to the IBEW, UA, Boilermakers, Operating Engineers, Laborers, and Cement Masons. In addition, Spectra provides specialized training to ensure that all employees understand and embrace our corporate values and goals.

Spectra is a California and Washington licensed general “A” and electrical “C10” contractor. Spectra holds an “R” stamp and is qualified to perform repairs and alterations on ASME Code boilers and pressure vessels.