NAICS Code 237990-02 - Tunneling Contractors

Marketing Level - NAICS 8-Digit

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NAICS Code 237990-02 Description (8-Digit)

Tunneling Contractors are companies that specialize in the construction of tunnels for various purposes such as transportation, water supply, sewage systems, and mining. These contractors are responsible for the excavation, support, and lining of tunnels, as well as the installation of necessary infrastructure such as lighting, ventilation, and drainage systems. Tunneling Contractors work in a variety of environments, including urban areas, mountains, and underwater.

Parent Code - Official US Census

Official 6‑digit NAICS codes serve as the parent classification used for government registrations and documentation. The marketing-level 8‑digit codes act as child extensions of these official classifications, providing refined segmentation for more precise targeting and detailed niche insights. Related industries are listed under the parent code, offering a broader context of the industry environment. For further details on the official classification for this industry, please visit the U.S. Census Bureau NAICS Code 237990 page

Tools

Tools commonly used in the Tunneling Contractors industry for day-to-day tasks and operations.

  • Tunnel Boring Machines (TBMs)
  • Drilling Rigs
  • Excavators
  • Loaders
  • Dump Trucks
  • Concrete Sprayers
  • Shotcrete Machines
  • Grout Pumps
  • Jackhammers
  • Surveying Equipment
  • Laser Scanners
  • Ground Penetrating Radar (GPR)
  • Tunnel Lining Machines
  • Ventilation Fans
  • Water Pumps
  • Welding Equipment
  • Hydraulic Power Units
  • Compressors
  • Generators

Industry Examples of Tunneling Contractors

Common products and services typical of NAICS Code 237990-02, illustrating the main business activities and contributions to the market.

  • Subway Tunneling
  • Water Tunneling
  • Sewer Tunneling
  • Mining Tunneling
  • Hydroelectric Tunneling
  • Road Tunneling
  • Railway Tunneling
  • Utility Tunneling
  • Pipeline Tunneling
  • Cavern Excavation

History

A concise historical narrative of NAICS Code 237990-02 covering global milestones and recent developments within the United States.

  • The history of tunneling contractors dates back to ancient times when tunnels were dug for irrigation, transportation, and military purposes. The first recorded tunnel was built in Egypt around 2000 BC to divert water from the Nile River. In the 19th century, the Industrial Revolution brought significant advancements in tunneling technology, including the invention of the tunneling shield, which allowed for the construction of larger tunnels. In the United States, the construction of the first transcontinental railroad in the mid-1800s required extensive tunneling through the Sierra Nevada Mountains. In recent history, tunneling contractors have been involved in several high-profile projects, such as the construction of the Channel Tunnel between England and France and the expansion of the Panama Canal. In the US, notable projects include the construction of the Lincoln Tunnel in New York City and the Big Dig in Boston, which involved the construction of a tunnel to reroute a major highway through the city.