Video
https://youtu.be/OblPqFFKS4U
Download: https://www.unrealengine.com/marketplace/post-apocalyptic-sandbox
This pack is modular and it includes weathered wooden boards, beams, plywood, a tree stump, some rusty pipes and steel plates, iron rods, a shattered road, lamppost, traffic lights, ropes, bricks, car tyres, concrete blocks and then some more. Most of the assets have 2 or 3 material variations.
The idea is that all of these can be used to design your own post-apocalyptic (or abandoned) shelters, villages and towns. Besides the meshes, there is also a couple of blueprints containing prefabs of shacks, industrial ruins, improvised beds and benches.
To bring everything to life, there is also a decent number of vegetation types (dead trees, weeds, dandelions and ivy!). You can also use the foliage tool to add some rusty nails and screws to the surfaces of your buildings.