Person of Interest
St. Petersburg Bridge
Reese is leaving when he gets another message from the Machine, and later he saves Logan Pierce from Justin Ogilvy and his goons on the same bridge in episode 2x14 “One Percent”.
Source: Person of Interest — Wikia
Jefferson Bridge
The team exchanges Finch for Grace Hendricks with the Decima team on the bridge in episode 3x21 “Beta”.