North Houston Pole Line, L.P. provides infrastructure solutions for the electric power industry in Texas. It offers installation and design services for substation projects, including site preparation, foundation construction, structural steel erection, cable trenching, breakers/switches/transformers installation, buss work, ground grid installation, and electrical apparatus installation. The company also provides construction and maintenance services for transmission lines that include breakout and rebuild of manholes over existing duct lines, hand box tunneling, and relocating energized lines; and installation services for overhead pole lines and underground buried cables, including overhead and underground construction and maintenance, primary voltage conversions, underground cable replacement, pole replacements, circuit re-conductoring, circuit rehabilitation, line relocations for road widening projects, make-ready work for communication infrastructure, outdoor lighting installation and maintenance, directional boring, and emergency restoration. In addition, it offers drilling/boring, environmental cleanup, sewer rehabilitation, and emergency restoration services. The company was founded in 1970 and is based in Houston, Texas. North Houston Pole Line, L.P. operates as a subsidiary of Quanta Services, Inc.