A Leader In Heavy Utility Construction!Mainline Contracting has been completing utility construction projects in the Rapid City and Black Hills area since April of 2000. We pride ourselves in constructing projects in a safe and timely manner that range in values from $5,000 to $5,000,000. Our clients consist of local municipalities, government agencies, and private developers. Our key employees have over 125 years of combined experience within our company that have contributed in building some of the areas most challenging construction projects.At Mainline Contracting we strive to provide a safe working environment and quality projects for our customers, we achieve this by our attention to detail and our clear communication with our customers, vendors, subcontractors as well as our employees. We stand behind our work and have always completed our projects on time and believe in providing our customers with an excellent product.With more than 21 years experience in the pipeline construction and right-of-way business, MainLine Contracting. has built a solid industry reputation as a reliable, cost-effective, efficient contractor that knows its business. Having employees that we can count on means that you, the customer, can count on us.Give us an opportunity to bid on your upcoming jobs and you wont be disappointed!