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Freight and oversized loads shaped interchange options; height and routing constraints noted
Summary
Port of Morrow freight movements and a restricted overpass height mean some interchange forms would complicate existing oversize routing; staff said rebuilding the overpass could remove current constraints but that interim routing needs remain important.
The TAC discussed freight operations and oversize/overheight vehicle needs raised by the Port of Morrow. The consultant summarized Port of Morrow concerns: oversized loads currently use the Main Street interchange and then rely on a railroad right‑of‑way crossover and local ramps to rejoin I‑84.
The project lead noted that until alternate routings (e.g., Laurel Lane or US‑730 connections) are available, the Port will continue to rely on Main Street for oversized freight movements. Technical staff observed that many interchange alternatives (including diverging diamond configurations) would require replacing the overpass to accommodate oversize vehicles and that that replacement could resolve the current height restriction that forces oversized vehicles off the mainline.
TAC members asked that the operational analysis explicitly include over‑dimension vehicle paths and confirm whether proposed layouts preserve necessary clearances and turning templates for heavy freight.
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