Traffic was allowed to travel the Ambassador Bridge around 1:00am this morning after it was closed for hours due to a bomb threat.

A man in Detroit called in the threat about 7:15 p.m., saying "There is a bomb at the Ambassador Bridge scheduled to go off in 10 minutes," according to officials.

Traffic on both sides was stopped and police and other agencies did a full sweep of the bridge finding no trace of a bomb.

This less than a week after a similar situation at the Detroit-Windsor Tunnel.  On Thursday, a bomb threat shut down the tunnel causing traffic backups for hours.  Commuters had to use the bridge to cross the international border.   That threat also showed no evidence of an explosive device.

Dan Stamper, president of the Detroit International Bridge Company said "We take any threat very seriously and set in motion the security measures the bridge has had in place since 9/11."