[Grammar] walk along outside an industrial building

[Oceanlike]

Is this sentence incorrect? It sounds weird to use 'outside' next to 'along'

I happened to walk along outside an industrial building when I heard a scream.
(I meant 'along' a path outside the building, but would like to omit a path)

Thank you.

 

[bhaisahab]

Don't omit 'a path'. You could rewrite it like this: 'I happened to be walking by an industrial building when I heard a scream'.