Our Businesses

Tree & Right-of-Way
Since 1945, utility-related forestry has been a core element of the Penn Line organization. Today, we work for some of the nation’s largest energy producers and highway systems. We are a single source for broad capabilities in all aspects of vegetation management. Our core capabilities include; Utility Line Maintenance; Right-of-Way Clearing and Maintenance; Herbicide Application; Storm Restoration; and Mowing.
Learn More
Roadside & Reclamation
Infrastructure services have been a mainstay of our business for generations. We are one of the Mid-Atlantic region’s oldest and largest contractors specializing in the construction of traffic safety barriers and roadside development services. Our capabilities include; Guide rail installation, repair and replacement; Impact attenuators and work zone barriers; Highway landscaping and erosion control; Commercial fence; and Highway and traffic signage.
Learn More
Tri-County Electric
Tri-County Electric is a specialty electrical service contractor with capabilities in large-scale commercial, institutional and industrial projects. We design and build power distribution and data communication systems in diverse and often highly complex environments, including technology-intensive facilities in healthcare, manufacturing and biotech; heavy industrial and hazardous (classified) locations; and a wide range of other private and public-sector environments.
Learn More
Line Division
Line construction was the core of our business at its inception in 1940, and remains a key part of our work today. We have expertise in high, medium and low voltage transmission, primary and secondary construction, including power lines and substations. Additionally, we have a long history as a contractor to some of the nation’s largest electric utility companies, independent and alternative energy producers, and the global telecom industry.
Learn More