From I-93 take Exit 5 to Rt-28 North Londonderry. Go west on Rockingham Road. Turn left on Abby Road, turn right on Harvey Road, and turn left on Bouchard Street. Bouchard Street becomes Garside Way. The CBP Office is located in the Signature Flight Services Building.
For Outbound clearances after hours and on weekends, please contact a Customs and Border Protection Officer in Portland at (207) 771-3620. Portland's duty hours are 0700-2300