Tri-State Drilling, Inc. is America's premier provider of drilled foundations for electrical transmission lines. Since 1955, ... our customers have known that when they choose Tri-State Drilling, they are choosing a company they can count on. Our experienced crews do top-quality work, and will complete your job on time, leaving the site in tip-top shape. With today’s ever tighter schedules, it’s tough to compete with Tri-State Drilling’s proven track record of quality, reliability and innovation. We continue to retain the know-how that, year after year, has made us the best-in-class provider, nationwide. Let our experience, skill and large fleet assist your company as, together, we help America keep the lights on. read more