Coordinate phrase

[Alexxey]

There is a construction of coordinate phrase when it relates to nouns, such as:

- you young boys
- the writer Wilson
- a child the same age
He is a child the same age -> 1) He is a child 2) He is the same age

However, I can not find a description of a construction with noun and adjective, such as:

- five pages long
- one-mile wide

I suspect here coordinate phrase also, because I can perform a similar transformation:

The letters is a five pages long -> 1) The letters is of five pages 2) The letters is long
The river is one-mile wide -> 1) The river is of one-mile 2) The river is wide

Are my thoughts right, and where to read a description of the such construction?