County, ITD studies outline multimillion‑dollar options to ease Rigby corridor congestion
Jefferson County and ITD presentations included multiple scenarios to address congestion at County Line and the Rigby Highway 20 exit — options ranged from roundabouts and a five‑lane upgrade to an overpass, with cost estimates discussed from about $16 million to larger multimillion‑dollar alternatives to be shared among developers, the county and ITD.
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Participants raised traffic and safety concerns at County Line Road and the single Rigby exit on Highway 20 and asked when improvements would be scheduled.
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