WEST LEBANON — When the city was forced to close the bridge connecting South Main Street in West Lebanon to the shopping plazas on Route 12A in March 2025 with less than 24 hours’ notice, commuters, buses, emergency services and businesses were left scrambling to adapt.

The 77-year-old bridge closes again at 7 a.m. Monday, this time with months of notice and for far longer: a full year, …