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Police chief and city engineer outline traffic-safety data and mitigation as I-94 construction reroutes drivers through West Allis
Summary
West Allis police and engineering staff presented speed-trailer and crash data, enforcement plans and near-term infrastructure measures — including rapid flashing beacons and an AI-based traffic-mitigation pilot — to address increased cut-through traffic tied to the Wisconsin DOT I-94 East–West construction project.
West Allis officials told the Public Safety Committee they are monitoring increased cut-through traffic linked to the Wisconsin Department of Transportation’s I-94 East–West construction and outlined short- and mid-term steps to protect pedestrians.
Police Chief Mitchell said the department deployed speed trailers at several corridor points to measure traffic behavior and that short-term crash data shows mixed results: "citywide crashes...rose from 355 crashes citywide in 2025 to 449 crashes citywide in 2026," he said, characterizing a citywide increase while noting a small-area triangle on Greenfield/National showed a modest decline in crashes. The chief presented 85th-percentile speed readings used in traffic engineering — for example, an 85th-percentile speed of about 40 mph at a…
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