The shape of solutions that accelerate and improve.

Quality concrete solutions that advance timelines and adhere to the highest standards of quality and longevity have been our hallmark for nearly a century. By setting new standards for innovation and engineering, we’ve helped keep the wheels of progress moving forward in new and exciting ways.

Cretex Infrastructure:
  • ERMC logo
  • Cretex Materials, a regional leader in aggregate products, supplies limestone, sand and gravel to the concrete, asphalt, landscaping and highway construction industries throughout Southern Wisconsin and Northern Illinois. With millions of tons of reserves in Burlington, Wisconsin, we will continue to meet the infrastructure construction needs of the region for decades to come.

    The team at Cretex Materials will work with you to provide the highest-quality, best solutions for your building aggregate needs.

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    Cretex Materials
    500 W. Market St. Bldg C
    Burlington, WI 53105
    Fax: 262-763-4341


  • Cretex Specialty Products is a market leader with products designed to eliminate inflow and infiltration in Manholes and Underground Pipes. With products for construction and rehabilitation, Cretex Specialty Products can help find the best solution for underground utilities.


    Internal mechanical manhole chimney seals
    External mechanical manhole chimney seals
    Applied manhole chimney seals
    Manhole adjusting rings
    Internal mechanical manhole barrel joint seals
    Internal mechanical pipe joint seals
    External joint wrap
    Manhole lid sealing products


    Cretex Specialty Products
    N25 W23790 Commerce
    Circle – E
    Waukesha, WI 53188

  • While serving customers for over 50 years, Elk River Machine Company has grown from a local Minnesota welding shop to a nationally recognized ISO 9001:2015 certified provider of custom steel fabrication and machining solutions to the railway, energy and aerospace industries.

    Not your typical machine shop, ERMC adds value and innovation to each step of project development from initial assessment through procurement, to manufacturing and testing of finished goods.  A culture of Continuous Improvement and Operational Excellence give our customers the assurance that we provide true Certified Value.

    AWS certified welding certifications, both manual and robotic, include, AWS D1.1, AWS D14.1, ASME Section IX, and EN 15080-2.


    Plate cutting
    Certified Welding
    Value Engineering


    Elk River Machine Company
    828 4th Street
    Elk River, MN 55330