Amazing place to see and well worth the trip and cost of the shuttle bus ride. Take the tram to the top and the bridge unless you are prepared to walk a ton of stairs up and down!
Take the 800 bus to Beauport from downtown and alight at terminus stop. Entrance to park is adjacent to bus loop (look for the chain link fence). If you’re walking on the bridge, you’ve gone too far.
Go on the bridge around midnight when the lights are turned off. Use the opportunity to pee over a raging waterfall. It's awesome, especially if the moon is full.