To reach the Limgrave Tower Bridge that leads to the Divine Tower, you'll need to head to the area near the main gate in Stormveil Castle. Unfortunately, this means you'll either need to Fast Travel to the Gateside Chamber and deal with the ballistas or backtrack toward the main gate...
When you first approach Stormveil castle gate you'll see the portcullis firmly closed. However, as you approach, you'll be called into a side door on the left by a lengthy character with some advice. Speak to him and he'll tell you that if you take the main gate you'll find it ...
Back in the courtyard, carefully clear out the Exiles in the area, but don’t go too far towards the north to the castle yet or down the slope to the east (that leads to the main gate and there are some tough enemies there). You can loot some bodies lying around in the courtyard,...