Just looked it up because I was wondering as well.
First, the image says “aqueduct bridge” for the first arched bridge, not “aqueduct”, because the whole thing you see there is the aqueduct.
Second, while Romans also simply built walls if they didn’t need as much elevation (and because they’re easier to build than those arches), as soon as you have successive arches, you have an arcade. So in the image, they’re both arcades and it’s just labeled weirdly.
Ah so now I understand what the arcade map in path of exile is all about.
Not sure what’s the difference to a aqueduct though.
Just looked it up because I was wondering as well.
First, the image says “aqueduct bridge” for the first arched bridge, not “aqueduct”, because the whole thing you see there is the aqueduct.
Second, while Romans also simply built walls if they didn’t need as much elevation (and because they’re easier to build than those arches), as soon as you have successive arches, you have an arcade. So in the image, they’re both arcades and it’s just labeled weirdly.
Okay, that’s what I also had understood from a quick search, but I wasn’t sure. Thanks for clarifying.