Route 4 - Westbrook

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