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Consultants outline alternatives, crash patterns and access-management options for Williston Road/Mary Street

South Burlington Planning Commission · March 25, 2026
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Summary

Stantec and city staff presented crash data, pedestrian gaps and access-management options; commissioners discussed signal placement, left-turn lanes and long-term compatibility with city-center redevelopment.

Consultants and city staff framed the Mary Street–Williston Road scoping study as an opportunity to reconcile a high-volume existing arterial with emerging city-center redevelopment and multimodal goals.

Sean Neely walked the commission through traffic volumes, crash patterns and land-use context, reporting that 2022 counts showed about 28,000 vehicles along much of the study area and 39,000 at Williston Road and Dorset Street. He summarized five-year crash totals at the hotel drives and Mary Street and said the patterns were predominantly angle and rear-end crashes.

Commissioners suggested alternatives ranging from re-locating the signal to Mary Street to exploring split three-way signal configurations, adding left-turn lanes where right-of-way permits, and testing phasing and detection improvements; the consultants said those options are within the study scope for analysis and that access-management recommendations could include updates to the city's official map.