Oregon Hill Neighborhood Association leaders have been meeting with the police ahead of the July 3 riverfront fireworks show.
From email:

Just a note that there will be 4 police officers in the neighborhood on July 3rd, starting around 3 in the afternoon.

We met with Lt Beazley and Officer Green this afternoon and discussed traffic and illegal parking.

They may close some of the alleys to thru traffic. The Lee bridge will be shut down around 7:30 pm.

There will still be a traffic backup getting out of the neighborhood, but we are hoping things will run a little smoother.

If you see any problems, let me know. I will be following up with the police on things that need to be changed or improvements that could be made for the next year.

Thanks
Jennifer

Update: It sounds like police will also close off Holly Street, 2nd Street, and the Lee Bridge at times during the event.