MNDOT says that in order to accommodate the proposed alignment of the Southwest LRT line in the Kenilworth corridor, which currently includes a freight rail line, a $70 million rail interchange would need to be constructed in Saint Louis Park to reroute freight trains. From the Strib:
The new [freight] connection is under study because the Kenilworth corridor is part of the route selected for the proposed southwest light-rail line between Minneapolis and Eden Prairie.
Hennepin County, which owns the Kenilworth corridor, says pinch points along the route — between Cedar Lake and Lake of the Isles — do not leave space for both freight and light rail. The county has planned the light-rail line assuming the freight tracks would be moved.
The County may have planned the line this way, but it didn’t include these costs in the capital cost estimates for the 3A route. This is from the Locally Preferred Alternative Evaluation Documents, Technical Memo #7A – Capital Costs:
Freight Rail Modifications – Modifications to freight rail operations were not separately quantified in the LRT alternative cost estimates. The relocation of TC&W near Louisiana Avenue is not considered a cost of any LRT alternative in this project. Minor shoofly alignments associated with bridge construction are included in the cost of the bridge in this estimate.
I assume this means that none of these costs made it into the Draft EIS which is under review by the Federal Transit Administration.