(605) 367-1036 info@jsaengineers.biz

Our Story

Founded in 1984 by Orlin Jibben and Richard Schwanke, JSA Consulting Engineers/Land Surveyors, Inc. is a full service consulting Civil Engineering and Land Surveying company with a long history of providing professional services to municipal and private sector entities. We place the highest value on teamwork and mutual respect among our employees and our clients. The value of our services is derived from our commitment to produce consistently high quality work within the constraints of the client’s schedule and budget. Our success can be attributed to the dedication our team commits to each project. Above all, we get the job done right!

Experienced Engineers

JSA’s highly trained professionals possess the technical skills and personal commitment to guide our clients’ projects from concept to completion.

Proven Performance

From highway design to subdivision developments, construction management to surveying services, JSA has achieved a proven track record and a solid reputation for professional engineering services.

Problem Solvers

Our staff combines state-of-the-art technology with innovative methods to devise solutions for our clients’ most difficult challenges.

JSA Team Members

Nate Jibben, PE/LS


Nate has over 21 years of experience in the consulting business and is head of the JSA survey department. He has wide range of expertise in the survey field ranging from ALTA surveys, Legal/Boundary surveys as well as general topographic surveys. Nate has extensive construction staking experience from completing City of Sioux Falls, SDDOT and Minnehaha County projects. In addition to his surveying responsibilities, he has been involved with design and project administration for street, utility and drainage projects.
Contact Nate
Office: (605) 679-4340

Pat Schwebach, PE/LSIT


Pat has over 27 years of experience providing design services on numerous private development projects varying in size from from individual site plans under an acre to large subdivisions over 300 acres. Some of the more notable projects Pat has worked on include the Dawley Farm Village, Sanford Sports Complex, Jansmick Addition and Timber Oak Estates/Addition. He has also designed plans and provided construction administration for City of Sioux Falls street/utility projects and drainage projects. From 1985 to 2005, Pat served in the SD Army National Guard where he advanced to Assistant Section Chief for the Sioux Falls unit.
Contact Pat
Office: (605) 679-4343

Myron Adam, PE/LS


Myron has over 27 years of experience in the civil engineering and land surveying field. He has served as the Project Manager for numerous City of Sioux Falls projects including 69th Street (Vineyard Avenue to Sycamore Avenue), S. Sycamore Avenue (from 57th Street to 69th Street) and Benson Road (from I-29 to Marion Road). His expertise includes using the XP-SWMM hydrology computer program to conduct drainage studies and modeling for development improvement projects. Myron is the City Engineer for the City of Canton and has provided professional guidance on various project over the years including infrastructure design, construction administration, cost estimating and coordinating for the City with other design specialists. He is a member of the City of Sioux Falls Infrastructure Review Board (IRAB) and has served on the City of Sioux Falls Plumbing Review Board in the past.
Contact Myron
Office: (605) 679-4344