It will operate under the name CS Beef Packers, LLC, with $100m of investment expected to be pumped into the construction of the plant.
The main purpose of the site will be to harvest cull cows and bulls from north-west dairy farms and cattle ranches throughout the Intermountain West, with a maximum of 1,700 head per day expected to be harvested.
The plant will also feature hide and rendering processing and have the ability to process niche-fed beef programs.
Scott Simplot, chairman of JR Simplot, said it would be the first significant processing operation in the region.
"Our company has farmed and ranched in the area for nearly a century and we’re excited to be a part of this joint venture that will further guarantee the long-term success of the region’s dairy and beef industries," he said.
Terry Caviness, chief executive of Caviness Beef Packers, said: "Together we will bring significant strengths and expertise to this project. We look forward to being a valued partner to area ranchers and dairymen as we expand our footprint in the US with another world-class beef-packing facility."
According to Simplot, demand for beef is at an all-time high. The final product will be pre-packaged boxed beef, which will primarily be marketed towards foodservice suppliers and retail outlets.
Tom Basabe, president of Simplot Land and Livestock, added: "We are excited to bring a new advanced plant to the area. This plant is ideally suited to meet the increasing demand for processing from the dairy and beef cow industry."
Pending approval from the necessary regulatory bodies, construction of the 300,000sq ft plant will begin in the spring of this year, and is expected to open in autumn 2016.