Professional. Experienced. Since 1991.

PHONE: 573-547-1771

Our Work

We believe in providing the highest quality service to all our customers on every project. We are constantly pioneering through new challenges and opportunities in many industries to bring our clients faster, and more accurate information then anytime in the history of our industry. Take a look at a few of our projects and what our customers have to say, and learn how Zahner & Associates can work for you.

Potosi Housing Authority Sidewalk Design

Zahner & Associates provided Engineering and Survey services for construction plans for the replacement of private and shared sidewalks for 31 federal housing buildings consisting of 102 units. This included ADA design of stairs, railings, curb ramp and switchback ramp. The design included construction details, profiles, and sections. The project is expected to be completed by fall 2017.

Downtown Stadium Project

Zahner & Associates was proud to partner our Mobile LiDar services with the Clayco Construction team for the planning of the new downtown stadium. With time and safety playing an important role, Mobil Lidar offered many advantages-



  • no personnel in the streets
  • no shutting down traffic lanes
  • provided clearances to powerlines and other utilities in a discreet and timely manner.



Bois Brule Levee

In the Spring of 2016 Zahner & Associates, Inc. was contacted by the Levee District and the Corps of Engineers to utilize our Mobile LiDar services to survey the low points (problem areas) on the 32 miles of the levee in Bois Brule. Timing was a major factor. Every minute counted as the Mississippi River flood waters were rising.  Zahner & Associates was able to survey and assess the problem areas and start staking a solution within 24 hours.


Columbia Construction (as built on existing site)

Dan Fritsche, of Columbia Construction, contacted Zahner & Associates, Inc. to utilize our laser scanning capabilities in order to provide an as built for an existing building site. The use of laser scanning allows us to detail piping, HVAC, existing steel, etc. The information provided allowed them to foresee complications in and outside of the building and fabricate their retrofit in a timely manner.


Ameren Transmission Line Montgomery to Sub T Hills

Zahner & Associates, Inc. provided surveying services for a 189 mile Ameren electric transmission line from Montgomery Substation (Missouri) to Hills Substation (Iowa). The project was staged in three phases. Phase I included 67.4 miles from Montgomery Substation to Palmyra Tap. Phase II was 62.8 miles from Palmyra Tap to north of the Missouri-Iowa border. Phase III completed the project with 59.2 miles from north of the Missouri-Iowa border to Hills Substation.