Use the Route 202 bridge when traveling from PA to NJ - it's free! The other way - haven't you always wanted to see downtown New Hope?
The toll is only applicable leaving NJ, but not returning from PA.
The bridge has the perfect view of the Friday Night Fireworks. The show starts around 9:30 so try to get there around 9:15 because the bridge fills up fast!
The southern view is best, with Bowman's Tower in the background, but the northern view isn't bad.
Don't drive across to New Hope, most of the time you can park in the lot and just walk the bridge which is freaking awesome! Don't look up at the spider webs though, you won't want to walk again.
Look for turtles on the bridge footings!
when it is raining, turn off windshield wipers if using the manned toll booth