When i bake in unreal

Hey everyone, I was working on a project where i created a bridge and imported it in Unreal. now every time I build my project some kind of black shadows appears on my bridge. help plz,(image is given below)

none of the uv’s are overlapping.


I’m just guessing from your screenshot…
So or the bridge boards/planks are separate pieces and you set their lightmap resolution very low
or you applied some automatic “lightmap creator” to the bridge which broke your mesh (uv) into pieces and it messes up the light calculation (well the result).