Border Delays shows the official wait times published by U.S. Customs and Border Protection and the Canada Border Services Agency for the three Detroit–Windsor crossings — the Ambassador Bridge, the Detroit–Windsor Tunnel, and the Gordie Howe International Bridge — in both directions. Cars, trucks, NEXUS, and the Gordie Howe walkway each appear where the agencies report them.
Readings refresh automatically every five minutes; the agencies themselves publish roughly hourly, so each card leads with the agency's own timestamp and flags a reading once it is overdue. The site is independent and free, and collects nothing about you.