In order to ask a question, we normally invert the subject and verb after the question word. But when we use a question word in a statement, we normally follow it with first the subject and then the verb. Consider these two examples
Where is the bus stop?
I don't know where the bus stop is.
The first sentence is a simple question, and we put the verb(is) before the noun(bus stop). The second sentence is a statement and we follow the question word with the subject and verb. If the sentence is not a question, make sure that the verb follows the noun.