Questions over origins of the Black Country Trail/Mudway in Dudley

I refer to the walking, wheeling and cycle path from Fens Pool Avenue, Brierley Hill, past Fens Pool at the Pensnett Nature Reserve, over Queen Street and on through Barrow Hill Nature Reserve towards Himley Hall/Park.  It is known as the 20 Kms Black Country Tourist Trail and as the Black Country Cycle-Walk Mudway because the mud is, as from this year, only found where the path runs through our borough.  In the last twelve months, the other two councils have worked hard and seem to have resolved the mud/waterlogged sections.  Dudley has not even tried.

When were the two disused railway lines turned into an official walking and cycling path/trail?

When was the railway bridge over Queen Street taken down?

What was the total cost of turning the two railway lines into a walking, wheeling and cycle path?

What was involved?

From many years ago, there remain obvious wooden edging boards to mark the path.  What was the designated width?

What was your chosen surface?

What is your inspection and maintenance regime for this path?

What was the design criteria for the path?

Many thanks