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Business Details
50+ Years
experience
Your Trusted Partner for Steel Erection & Construction Solutions
Since 1933, Sowles has established itself as a leader in specialty steel erection and construction services. As an AISC Certified Advanced Steel Erector and signatory employer of the International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers, we combine decades of expertise with industry-leading certifications. Our team specializes in structural steel erection, bridge construction, post-tensioning, and pre-cast concrete solutions for complex projects including high-rises, stadiums, hospitals, and industrial facilities.

With operational hubs in the Midwest, Rocky Mountains, and Pacific Northwest, we serve diverse markets across commercial, healthcare, energy, and infrastructure sectors. Our commitment to safety management and quality execution has earned us long-standing partnerships with major construction firms nationwide. From initial planning to project completion, we deliver precision-engineered solutions tailored to each client's unique requirements.
Services
Structural Steel Erection Bridge Erection Post Tensioning Reinforcing Steel Pre-Cast Concrete Metal Buildings Tower Crane Rental Construction Elevator Rental Shoring Systems Equipment Sales
Details
  • Year established: 1933
Highlights and features
  • We offer 90+ years of specialized expertise in steel erection since 1933
  • Our team holds AISC certification for advanced steel erection practices
  • We maintain active memberships in key industry associations like PCI and PTI
  • Our crews follow CRSI and ACI standards for reinforcing steel installation
  • We provide comprehensive solutions from structural steel to tower crane rentals
Associations and certifications
  • AISC Certified Advanced Steel Erector
  • International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers
  • Post Tension Institute
  • Precast/Prestressed Concrete Institute (PCI)
Services
Structural Steel Erection
We specialize in high-rise steel frameworks for commercial buildings, sports stadiums, and industrial facilities. Our AISC-certified crews handle complex installations requiring precision engineering and heavy-lift capabilities. Projects include healthcare centers, manufacturing plants, and multi-story parking structures.
Bridge Erection
Our bridge construction services cover steel girders, trusses, and pre-stressed concrete systems. We install structural components for highway overpasses, river crossings, and pedestrian bridges. This includes safety railings and reinforcement systems meeting DOT specifications.
Post Tensioning
As certified installers, we apply post-tensioning technology to enhance concrete structures. This includes mono-strand and multi-strand systems for parking garages, high-rises, and industrial floors. Our work increases structural spans while maintaining integrity.
Reinforcing Steel
We place reinforcing steel in concrete foundations and structures following ACI and CRSI standards. Our Midwest teams focus on high-rise cores, bridge piers, and industrial foundations. Services include detailed rebar placement for enhanced load-bearing capacity.
Pre-Cast Concrete
We erect architectural and structural pre-cast elements for buildings and infrastructure. This includes tilt-up panels, parking structure components, and heavy concrete sections requiring specialized rigging. Our PCI-certified teams ensure precise installation of factory-produced elements.
Questions
What construction services does Sowles Company offer?
We provide structural steel erection, bridge building, post-tensioning systems, reinforcing steel installation, pre-cast concrete erection, and metal building solutions for commercial and industrial projects.
How long has Sowles Company been in business?
We've been serving the construction industry since our founding in 1933, with over 90 years of experience in specialty steel erection and infrastructure projects.
What geographic areas do you serve?
Our primary service areas include the Midwest, Rocky Mountains, Pacific Northwest, and Alaska, with operational bases in Minnesota, Montana, and Oregon.
Are you certified for specialized construction work?
Yes, we're AISC Certified Advanced Steel Erectors and hold certifications from the Post Tension Institute and Precast/Prestressed Concrete Institute for specialized installation work.
What types of construction projects do you handle?
We work on high-rise buildings, sports stadiums, hospitals, industrial plants, parking structures, ethanol facilities, and infrastructure projects requiring precision steel erection and concrete solutions.
Do you provide construction equipment rentals?
Yes, we offer tower crane and construction elevator rentals with full-service support including engineering, installation, and dismantling for projects in our service areas.