Home Recent Projects Expertise Design Services Contact Us Our corporate offices have been relocated to Seneca, Pennsylvania in Venango County at 3272 State Route 257 Seneca, PA - centrally located between Erie & Pittsburgh. Since June, 2000, Horizon has been involved in the successful completion of a variety of municipal, commercial and industrial civil design and construction projects. We strive to achieve the perfect balance between cost control, and quality durable sustainable products. We stand behind every project with confidence that the product delivered will meet the intended need of the owner. Office: 3272 State Route 257 Seneca, PA 16346 Phone: (814)493-8329 Fax: (814)493-8603 brian@hcgroup.net Office Hours: Monday - Friday 8:00AM to 4:00PM HEAVY/HIGHWAY GENERAL BUILDING WATER/WASTEWATER