Awfully pleased about a new walkway (9)
I believe the answer is:
esplanade
'walkway' is the definition.
(I know that esplanade is a type of Promenade)
'awfully pleased about a new' is the wordplay.
'awfully' indicates an anagram.
'about' means one lot of letters goes inside another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'pleased' anagrammed gives 'esplade'.
'a'+'n'='an'
'esplade' going around 'an' is 'ESPLANADE'.
(Other definitions for esplanade that I've seen before include "place for a stroll" , "Space for a stroll by the seaside" , "Level seashore walkway" , "Walkway by the sea" , "Seafront walk" .)