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- Route 4 - Westbrook
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METRO Route #4 travels between Portland and Westbrook, via USM (Portland) and Brighton Avenue, with service to IDEXX, Abbott Labs (NEW), the Hamlet, and Westbrook Hub (connect to Route 3 and Husky Line).
Route 4 Map & Schedule Change - Effective 5/9/21
Schedule changes for Route #4 Weekdays and Saturday
Expanded service to Abbott Labs/Bradley Drive (Westbrook) after stopping at IDEXX.
(Bus stops at IDEXX stop inbound only.)
IDEXX Bus stop -- moved to sidewalk along Eisenhower Drive.
See online schedules below:
Route 4 Schedule/Map (PDF) - LINK