605 Companies Inc

07/01/2026

We are a complete general contracting and site work contractor serving the Sioux Empire area. Check out our website and let us know what we could do for you!

Below are the kinds of services we provide on a wide range of project types. Click on the buttons to get more specific information about our site work services.

06/30/2026

We crushed 12,000 tons of concrete and asphalt with our mobile crushing department. Are you looking to recycle some of your concrete, asphalt, and demolition debris? Give us a call!


https://605inc.com/ourservices/custom-concrete-and-asphalt-crushing/

06/29/2026

Now that summer is officially here, we are full swing into South Dakota's 5th season- road construction season. Working on more draining improvement areas.

06/26/2026

Working on drainage improvement near a few schools this summer!

06/24/2026

Have you seen us along the interstates? Our Erosion department has been mowing. Be sure to give our tractors space when driving by!

06/22/2026

We are in Corson, starting a commercial building.

06/01/2026

We are always looking for talented people.

05/31/2026

05/29/2026

Mobile Concrete & Asphalt Crushing Services
Our mobile crushing division brings efficiency directly to your job site. We turn concrete, asphalt, and demolition debris into reusable aggregate—saving you time, transportation costs, and disposal fees.

Serving Eastern South Dakota. Sioux Falls area. Reach out to [email protected] for more information.

05/27/2026

The fleet and crew have mobilized to Crofton to work on waste stabilization ponds.