Singapore Addresses Format

I was always confounded by the format of Singapore addresses. For the uninitiated, the format is as such:

Name
Block Number Road Name
Apartment Number
Postal Code

What I don't get is how it is ordered, i.e., the endian-ness. If I had a say I would have ordered it with the major address elements first, like the road name, followed by the block number then the apartment number. It only makes sense; it mimics how humans find their way around. One doesn't try to find the apartment block without knowing which bloody road it is located!