About Us

Our Story

Rocky Mountain Excavation & Grading LLC was founded by James Simmons based upon his years of experience in the fields of heavy civil engineering, foundational drilling, excavation, grading, demolition and construction services work. Since our inception, we have grown quickly and developed an excellent reputation for quality work, on schedule project completion, and an ability to meet our clients' needs within their budgeted cost.

James grew-up in Pennsylvania before moving to California where the majority of his construction experience was obtained. He started his career with Caterpillar as an apprentice Heavy Equipment Technician, before getting involved in the construction industry where he worked for several companies in Northern California, including Malcolm Drilling Company, one of the USA's largest deep foundation drilling contractors.

Since 2021 Rocky Mountain Excavation & Grading has been successful in continuing to secure a pipeline of project work which has allowed us grow and add equipment, people and expand our services.


We are dedicated to meeting our client's needs throughout all phases of their project. Attention to detail in every aspect of a job, has been, and always will be our top priority!


Christina: (Belgrade - Excavation, Grading & Hauling)

“Excellent service and responsive. Rocky Mountain Excavation was very accommodating in meeting with me in a timely matter and walking the property prior to the project start date. They worked relentlessly to complete the project with short notice. The end was better than expected. They went above and beyond to complete my project on budget along with leaving my property vastly improved, highly recommend!”

Pete: (Big Sky - Retaining Wall)

“Rocky Mountain Excavation was very easy to deal with and we had some great conversation. They were very affordable and worked with me to meet my budget. Their work is clean and they have an eye for detail. They went above and beyond our expectations and I have already recommended to many of my friends.”

Tim: (Bozeman - Excavation/Grading with Hard Access)

“I used Rocky Mountain Excavation recently to grade my backyard for a new patio and trench for the footing of a new retaining wall. the access was difficult, as is often the case. They did a great job, ensured appropriate slope with his laser level, was on time and courteous, helpful with other suggestions for the site and had a fair price. I also used him to move 10 tons of stone I bought for my wall from the street to my yard below, again in a difficult access environment. I would use them again for similar work.”