"The stop comes in a short time."
Translation:Oprirea vine în scurt timp.
"În scurt timp" is a fixed expression, you have to learn it the way it is.
Keep in mind that Romanian adjectives may come either after or before the noun they modify. More often than not, they are placed after the noun, but there are instances (such as fixed phrases like this, poetry or even avoiding cacophony) in which adjectives appear before the noun.