Hours · New York
Massena-Cornwall border crossing hours
Posted hours and services for Massena-Cornwall (Seaway) as the border agencies publish them, with the date we read each source.
Posted hours, U.S. side
The U.S. CBP wait-time feed publishes the hours for Massena as 24 hrs/day. Source: CBP Border Wait Times feed, read 2026-10-20.
Port status when we read it: Open.
CBP port office hours
| Day | Hours |
|---|---|
| Sunday | 12:00 pm-12:00 pm ET |
| Monday | 12:00 pm-12:00 pm ET |
| Tuesday | 12:00 pm-12:00 pm ET |
| Wednesday | 12:00 pm-12:00 pm ET |
| Thursday | 12:00 pm-12:00 pm ET |
| Friday | 12:00 pm-12:00 pm ET |
| Saturday | 12:00 pm-12:00 pm ET |
Source: CBP port page, read 2026-10-20. Page last modified Sep 10, 2025.
Posted hours, Canadian side
| Service | Days | Hours | Note |
|---|---|---|---|
| Travellers | 7 days per week | 24h | |
| Commercial | 7 days per week | 24h |
CBSA office directory, last updated . Source: CBSA office directory, read 2026-10-20.
Services listed by the CBSA
- HWY/B: Highway/Land Border Office
- HUB: HUB/Central Office
- DCO: Designated Commercial Office
- EXPORT: Designated Export Reporting Office
Source: CBSA office directory, read 2026-10-20.
Where and who to call
- U.S. port of entry: 30M Seaway International Bridge Rooseveltown, NY 13683 United States, phone +1 315-268-7430. This is the port-level address from the CBP port page and a port can contain several crossings. Source: CBP port page, read 2026-10-20.
- CBSA office: 1 Brookdale Avenue, Cornwall, ON K6J 0A9. . Coordinates 45.012549, -74.738958. Source: CBSA office directory, read 2026-10-20.
What the feed says about operation
Lane counts in the CBP feed for Massena-Cornwall (Seaway): passenger vehicles 6, pedestrians N/A, commercial 3. A maximum lane count says how many lanes the crossing has, not how many are open: the live panel shows lanes open right now. Details are on the lanes page. Source: CBP Border Wait Times feed, read 2026-10-20.
Seasonal and temporary changes
Hours change for construction, staffing and weather, and the agencies do not publish a seasonal schedule in the feeds we use. We show the hours exactly as each source states them, with the date we read them. If the live panel on the wait page shows the crossing closed, believe it over any posted hours.