This is the 8819th most frequent Japanese word.
架かる
"架かる" means "to be hung, suspended, or spanned."
The verb 架かる is used to describe the action of something, like a bridge, being suspended or spanning across a space.
橋が川に架かる。
The bridge spans the river.
Here, 架かる refers to the lines being stretched or extended in a suspended state.
通信線が空中に架かっている。
The communication lines are suspended in the air.
In this case, 架かった metaphorically represents the act of something settling or being imposed on someone.