Get matched with top structural engineers in Spearfish, SD
Top-rated structural engineers.

Need a pro for your structural engineering project in Spearfish, SD?

Select your specific project to find the pro for you.

Verified Reviews for Structural Engineering pros in Spearfish, SD

*The Angi rating for Structural Engineering companies in Spearfish, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

*The HomeAdvisor rating for Structural Engineering companies in Spearfish, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

Last update on March 17, 2026

Find Structural engineers in Spearfish

Avatar for Evolution Drafting
Evolution Drafting
3.4(
92
)

Serving Spearfish, SD and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly use them again."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
44 neighbors recently requested a quote
Request Quote
Ascended Constructions
New to Angi

Serving Spearfish, SD and surrounding areas

Approved

In business since 2023

Offers commercial services

We’re a family owned and operated company that values honesty and integrity, and stands behind our work. We offer over 40 years of industry experience. We specialize in Asphalt Shingle Roofing installation, replacement, and repairs. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

5 neighbors recently requested a quote
Request Quote
Avatar for Evolution Drafting
Evolution Drafting
3.3(
38
)

Serving Spearfish, SD and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"I had a fantastic experience working with this drafting firm. From the very first phone call, Kirsten?our drafting consultant? was clear, professional, and incredibly helpful. She explained the entire process in detail and made sure all of my questions were answered up front, which gave me immediate confidence in the team. This firm partnered with engineers and architects to get the best quote for me on a stamp for my plans after they did an exceptional job on drawing the prints that met all the requirements for permitting. Their coordination and attention to detail made the process very simple on my end. If you are looking for a highly capable drafting firm that knows how to get things done right, I highly recommend them!"
Charcoal Residential
Response time6 hrs
Recommended by23%of homeowners
Request Quote
Wolf Dance Design, Inc.
5.0(
1
)

Serving Spearfish, SD and surrounding areas

In business since 2000

Credit card accepted

Wolf Dance Design, Inc., has been service the residents of South Dakota for well over 15 years. Our service pro's have been honing their craft for decades, which means they bring the best and brightest ideas to the industry. From bathrooms, to kitchens, or full additions, we can do it all. Even just some carpentry work, no problem! We believe in bringing the beauty around us into the design of your home. Call us today to find out how Wolf Dance Design, Inc., can help you with your remodel plans!

Recommended by100%of homeowners
Request Quote
Structural Engineering questions, answered by experts

A structural engineer evaluates any structural components, like floors, foundations, walls, and roofs, to ensure they can support the structure. They also consider the soil quality in your area, potentially extreme weather conditions, and proximity to bodies of water and groundwater to ensure your building can withstand any stresses placed on it by the surrounding environment. Structural engineers work on both new and existing buildings.

Yes, professionals reinforce the foundation with additional supports or piers to prevent future sinking.

On average, 6 inches of concrete can hold around 150 pounds per square foot, but the exact weight that 6 inches of concrete can hold depends on factors such as the type of concrete, the reinforcement method, soil conditions below, and structural design. If you’re concerned about the longevity of your concrete patio, walkway, or driveway, hire a professional to help you choose an appropriate concrete thickness and reinforcement method for your needs.

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

Dormers must be able to bear the load of their own construction and the added window. The style of the dormer, however, will determine where the weight loads onto your home's structure. A gable dormer bears the weight on the side walls whereas a shed dormer bears it on the front walls.

The Spearfish, SD homeowners’ guide to structural engineering services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles