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Business Details
50+ Years
experience
Expert Construction Contractors Since 1933
Founded in 1933, Sowles Company has built a solid reputation as a specialty contractor in steel erection and construction services. We specialize in structural steel erection, bridge construction, post-tensioning, reinforcing steel installation, pre-cast concrete erection, and metal building systems across the Midwest, Rocky Mountains, and Pacific Northwest regions. Our team operates as an AISC Certified Advanced Steel Erector and maintains partnerships with industry-leading organizations like the International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers. With decades of experience in high-rise projects, stadiums, hospitals, and industrial facilities, we combine technical expertise with safety-focused practices to deliver complex construction solutions.

Our capabilities extend to tower crane rentals and equipment services, supported by a comprehensive approach that includes engineering, logistics, and on-site execution. We maintain rigorous quality standards through certifications from the Post-Tensioning Institute and the Pre-Cast Concrete Institute while serving diverse sectors including commercial, industrial, and infrastructure development.
Services
Structural Steel Erection Bridge Erection Post Tensioning Reinforcing Steel Pre-Cast Concrete Metal Buildings Tower Crane Rentals
Details
  • Year established: 1933
Highlights and features
  • We offer 90+ years of specialized construction experience
  • Our team includes AISC-certified steel erection experts
  • We provide comprehensive turnkey construction solutions
  • We maintain rigorous safety and quality management systems
  • Our regional coverage spans three major US divisions
Associations and certifications
  • AISC Certified Advanced Steel Erector
  • Post-Tensioning Institute
  • Precast/Prestressed Concrete Institute (PCI)
Services
Structural Steel Erection
We specialize in high-rise structural steel assembly for commercial and industrial buildings. Our AISC-certified teams handle complex installations including stadiums, hospitals, and manufacturing facilities. Projects benefit from our advanced engineering support and safety-compliant execution across multiple sectors.
Bridge Erection
Our bridge construction services include steel girder installation and concrete reinforcement for transportation infrastructure. We handle beam placement, railing systems, and post-tensioning applications while maintaining compliance with federal transportation standards and safety protocols.
Post Tensioning
We install post-tensioning systems that enhance concrete structural capacity. Certified by the Post-Tensioning Institute, our crews apply mono-strand and multi-strand systems to increase span capabilities in commercial buildings and infrastructure projects while meeting industry code requirements.
Reinforcing Steel
Our ironworkers place reinforcing steel in concrete structures according to CRSI and ACI standards. This critical work strengthens foundations, parking garages, and high-rise buildings through precise rebar placement that meets structural engineering specifications and safety requirements.
Pre-Cast Concrete
We erect architectural and structural pre-cast concrete elements for buildings and infrastructure. Our certified installers handle heavy components requiring specialized rigging while maintaining PCI standards for quality control and structural integrity in commercial developments.
People
Dan Sowles
President/CEO
Dan Sowles Company leads the third-generation family business with strategic oversight of operations and growth initiatives across all regional divisions.
John Dahl
Vice President/Area Manager
John Dahl manages regional operations and project estimating while maintaining key client relationships for the company's Midwest division.
Sheila Stenseth
Controller
Sheila Stenseth oversees financial operations and accounting systems for Sowles Company's multi-location business structure.
Molly Thompson
Assistant Controller
Molly Thompson supports financial management and reporting functions across the company's regional operations and project accounting systems.
Bridget Bataglia
Corporate Safety Director/HR Manager
Bridget Bataglia leads safety compliance programs and human resources operations for Sowles Company's workforce development initiatives.
Questions
What construction services does Sowles Company Company offer?
We provide structural steel erection, bridge construction, post-tensioning, reinforcing steel, pre-cast concrete, metal buildings, and tower crane rentals.
Which regions does Sowles Company Company serve?
We operate across the Midwest, Rocky Mountains, and Pacific Northwest regions including Alaska.
What certifications does Sowles Company Company hold?
We maintain AISC steel erection certification, Post-Tensioning Institute membership, and PCI pre-cast concrete certification.
How long has Sowles Company Company been in business?
We have served the construction industry since our founding in 1933.
What types of projects does Sowles Company Company handle?
We work on high-rise buildings, stadiums, hospitals, industrial facilities, transportation infrastructure, and commercial developments.
How can I apply for employment at Sowles Company Company?
Visit our careers page to explore current opportunities or contact our HR department directly for application details.