The flames could be seen late Thursday night around 11 p.m. from the south side of the bridge.
Eyewitness News reporter Josh Einiger rode along with the FDNY on a fireboat during the show while New York's Bravest worked to keep the area safe.
Crews were on top of the bridge working to access the flames from above. A large fireboat was ready to spray the bridge in the event it was needed.
RELATED: On patrol with the FDNY Marine Division
The FDNY has 14 boats on the East River in New York Harbor and their job is to keep everyone safe.
Get an inside look at what it takes to keep onlookers safe in the video player above.
* More New York City news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube