Mark Keenihan, PE - Environment & Natural Resource

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!

Skyline Engineering LLC, located in Rapid City, SD, specializes in mechanical and electrical consulting engineering, providing a diverse range of services including sustainable design and specialty lighting. Their team is dedicated to innovative design solutions across various markets such as healthcare, education, and commercial sectors. Committed to community involvement and changing public perceptions of engineering, Skyline Engineering emphasizes a collaborative delivery process and embraces advanced technologies like Revit and BIM in their projects. With a focus on quality and sustainability, their approach ensures that clients receive tailored engineering solutions that meet their specific needs. Generated from the website

HDR is a global company with a focus on addressing some of the world's greatest challenges through innovative design and engineering solutions. With 13,000 employees and 200 offices worldwide, they serve a diverse range of markets including healthcare, transportation, and environmental services. Dedicated to sustainability and resilience, HDR is committed to helping clients navigate complex issues such as waste management and the impacts of PFAS chemicals at airports. Their culture fosters talent growth and collaboration, enabling teams to create impactful solutions for communities and industries alike. Generated from the website