Route 4
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).
June 6, 2022: some bus stops will be temporarily moved due to construction.
Route 4 Schedule Changes, effective June 12, 2022
Schedule / Map Spread - LINK
Brochure - LINK