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What Do the Markings on Underground Utilities Mean?

underground utilities

The different colors that mark underground utilities have very specific meanings.

Whenever a new road is constructed, the contractors building the road must pay special attention to the underground utilities. These are the underground pipes and wires that provide services to a city or town, such as stormwater grates, electric power lines, sewers, and more. When constructing a new road, the contractor will raise these utilities to make way for incoming asphalt, then lower them down again so that they’re flush with the new pavement. A contractor has to know where these utilities are and how to work with them; some utilities cannot be seen from above ground. Some even have an area around them that is not permitted for construction! One of the ways contractors keep track of utilities is by labeling them with colors. If you’ve ever seen colorful marks on a road or sidewalk, here’s what these colors mean.

The Meanings of Different Colors for Underground Utilities

It can be difficult to know where underground utilities are. Some types of underground utilities have different rules and regulations surrounding them. These colors help contractors to label utilities so that they can work around them in the correct manner:

  • Red: Red is a sign of underground electric power lines, cables, conduits, and lighting cables.
  • Orange: Orange is a sign of telecommunication lines, alarm or signal lines, cables, or conduits.
  • Yellow: Yellow is a sign of pipes that carry natural gas, oil, steam, petroleum, or other gaseous or flammable material.
  • Green: Green is a sign of sewers and drain lines.
  • Blue: Blue is a sign of pipes that carry drinkable water.
  • Purple: Purple is a sign of pipes that carry reclaimed stormwater, irrigation, and slurry lines.
  • White: White is a sign of a proposed excavation limit or route.

Get in Touch with Reliable Contracting

Reliable is dedicated to delivering quality products, displaying professionalism within the firm, seeking new opportunities for expansion and profitability, and providing an environment for individual success. If you have a commercial or residential construction project that you need taken care of, please contact Anne Arundel County’s largest site-work contractor today by calling 410-987-0313 or visiting our website. You can also follow Reliable Contracting on Facebook, Google+, LinkedIn, Pinterest, and Twitter!

Reliable Contracting Company serves the following and surrounding counties: Annapolis, Queen Anne’s, Anne Arundel, Baltimore, Baltimore City, Calvert, Caroline, Charles, Howard, Prince George, St. Mary’s, Talbot, and Washington D.C.

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Serving Maryland's Commercial & Residential Builders & Developers Since 1928 Reliable Contracting Company, Inc. maintains a reputation as a leader in the construction industry. Our clientele includes builders, developers, individuals and government agencies. With projects ranging in cost from $10,000 to over $10 million, Reliable can be seen working on Maryland's roads, highways, airports, office parks, shopping centers, hospitals, churches, and residential neighborhoods earning our reputation by providing clients with consistent quality and dedication to their projects. Reliable Contracting Co., Inc. is a Proud Member of the following organizations: Associated Builders and Contractors, Chesapeake Chapter - www.abc-chesapeake.org Maryland Asphalt Association - www.mdasphalt.org Maryland Transportation Builders and Materials Association - www.mtbma.org National Asphalt Paving Association (NAPA) - www.asphaltpavement.org West Anne Arundel County Chamber of Commerce - www.waaccc.org Leadership Anne Arundel - www.leadershipaa.org National Federation of Independent Business - www.nfib.com U.S. Chamber of Commerce - www.uschamber.com Homebuilders Association of MD - www.homebuilders.org
2410 Evergreen Road
Gambrills
MD
21054
USA
Serving Maryland's Commercial & Residential Builders & Developers Since 1928 Introduction Reliable Contracting Company, Inc. maintains a reputation as a leader in the construction industry. Our clientele includes builders, developers, individuals and government agencies. With projects ranging in cost from $10,000 to over $10 million, Reliable can be seen working on Maryland's roads, highways, airports, office parks, shopping centers, hospitals, churches, and residential neighborhoods earning our reputation by providing clients with consistent quality and dedication to their projects.
2410 Evergreen Road, Suite 200
Gambrills
MD
21054
USA