The City of Salt Lake released a screening analysis on July 28, 2026, evaluating the Rio Grande Plan, a citizen-generated proposal to relocate heavy freight rail, regional commuter rail, and Amtrak services into an underground 'train box' beneath 500 West. The analysis examines whether the massive infrastructure project could unlock 75 acres of industrial land for redevelopment while restoring the historic Rio Grande Depot as a central transit hub.
Rail Realignment Goals
The proposed Rio Grande Plan (RGP) seeks to fundamentally alter Salt Lake City's rail landscape by realigning Union Pacific heavy freight rail, UTA FrontRunner commuter rail, and Amtrak services. According to the city's transportation division, the concept relies on a 'train box' design that would move these various rail lines under 500 West.
A primary goal of the RGP is the revitalization of the historic Rio Grande Depot. The plan envisions restoring and repurposing this landmark to serve as a multi-modal hub for the city and the broader region. This centralized station would be designed to accommodate not only Union Pacific, FrontRunner, and Amtrak but also regional light rail services such as TRAX.
Engineering and Infrastructure Analysis
The screening analysis was conducted to review the feasibility of the RGP by applying existing design standards and performing preliminary engineering assessments. The study focused on determining technical specifications for the proposed train box, including its required depth, width, and horizontal limits.
Beyond the physical dimensions of the tunnel, the city's analysis investigated how such a structure would impact the surrounding infrastructure. Key areas of investigation included potential effects on intersections located both upstream and downstream of the train box, as well as the project's impact on existing underground utilities.
Land Use and Environmental Impact
A significant component of the study involved assessing environmental and land-use implications. The analysis examined potential impacts to the existing floodplain and evaluated the project's ability to free up industrial land for new development.
Proponents of the RGP suggest that relocating the rail infrastructure would open 75 acres of currently occupied industrial land for redevelopment, potentially transforming the urban fabric of the area.
Future Decision Making
The City of Salt Lake clarified that the screening analysis does not constitute a formal recommendation for or against the project. Instead, the document serves to identify key issues and provide decision-makers with preliminary information regarding the potential costs and benefits of the undertaking.
The purpose of providing this data is to allow city officials to determine whether the Rio Grande Plan concept merits further detailed study or more intensive investigation.
