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Railroad underpass on downtown approach flagged as frequent crash site; short-term tech and signage fixes proposed
Summary
Staff reported the underpass near the rotary has about a 12.5-foot clearance and 46 crashes from 2018–2023 (including multiple truck strikes). Consultants and staff suggested interim measures—improved signage, flashing beacons and over-height detection—because raising the rail would be complex and expensive.
Town staff and consultants identified the low-clearance railroad underpass near the rotary as a persistent operational and safety problem during the downtown improvement workshop.
Bill described the underpass as "only 12 and a half feet high" and said 46 crashes were reported at the bridge from 2018 to 2023, including about a dozen incidents where a vehicle struck the overhead. He added that tractor-trailers were involved in a majority of those incidents: "Tractor trailers were involved in 33 of those 46 crashes," he said, explaining how strikes create long delays and complex traffic backups in the center of town.
Staff explained the technical and logistical obstacles to increasing vertical clearance: the rail line is an active commuter corridor and raising the track would require regrading a considerable distance on either side and addressing nearby water-table constraints, making such an approach impractical as a short-term solution.
Consultants and staff described a range of shorter-term countermeasures under study: improved early-warning signage, higher-visibility paint and reflective markings on the bridge, flashing yellow beacons at approach points, and more active over-height detection systems that would intercept trucks earlier and provide diversion options so a vehicle does not become stuck under the bridge.
The project team said they will evaluate low-cost, interim strategies and incorporate underpass mitigation into traffic management and design refinements as the plan advances into preliminary engineering.
No funding or implementation timeline for these underpass measures was provided at the meeting; staff said recommendations and cost estimates will be developed during preliminary engineering.
