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OSCO FRP underground utility markers are available in a wide range of colors and lengths. These high-visibility marking posts are ideal for protecting underground utilities and displaying warning messages to prevent an accidental dig. For added safety and security, an optional anchor makes the utility markers virtually impossible to remove once driven into the soil.

Most commonly used for underground utility marking to protect buried electric cable, gas and water pipelines, and fiber optic routes, these high-strength marking posts can be used to warn people away from overhead power lines, high-voltage structures and more. They can also be used to mark boundaries. Our knowledgeable team can help you select the ideal marking products for your applications.

Built To Last

OSCO underground utility markers are built with the same FRP material used in ReadySeries and other FRP structures, or from durable polypropylene. They’re lightweight for easy transport to the installation site, and they work in all climates. With the perfect combination of high strength and flexibility, our utility markers hold up against fierce winds and impacts from debris.

Our marking products also have space to give decals and other vinyl safety signs high visibility on one or both sides of the marker post. The high strength and durability ensures that OSCO utility markers can be easily driven into any soil type, and installation tools are available to make the process even easier.

Key Features
  • High strength, yet lightweight
  • Won’t rust, rot, warp or bow
  • Won’t conduct electricity
  • High impact strength
  • Withstands harsh environments
  • Applicable in all climates and temperatures
  • Available with or without decals and/or soil anchors
Common Applications
  • Utility line marking
  • Municipal water lines
  • Potable water lines
  • Waste water lines
  • Gas lines
  • Buried cables
  • Boundary lines
  • Parks & recreation
  • Electrical
  • Telecommunications
Standard Colors
  • White, yellow, orange, blue, red, green and brown
  • Additional colors available
Standard Lengths
  • 62″ (1.575 m), 66″ (1.676 m) and 72″ (1.829 m)
  • Additional lengths available

Marker Installation

Marker Installation Step 1

Remove marker from packaging and insert into post driver with the pointed end up.

Marker Installation Step 2

Rotate driver and marker 180°. Align marker so the decal or sheeting is facing the direction of traffic.

Marker Installation Step 3

Drive marker into the ground with light taps, placing your foot against the base of the post to prevent the marker from flexing during installation.

Count On OSCO For All Your Safety Solutions

Along with underground utility markers, OSCO is your complete resource for cathodic protection testing systems, marking flags and vinyl safety signs and decals. We’re also your one-stop shop for a wide range of fiberglass-reinforced polymer (FRP) industrial safety products, including pultruded fiberglass grating, FRP molded grating, FRP platforms, FRP ladders, FRP handrails and other FRP structures.

Ready to Get Started?

Whether you simply need to replace a part or have a major project to start from scratch, our knowledgeable, experienced team is here to help.

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