demise of my horses

I had been away for a few days
visiting an aunt in Cascais
on returning home
my three stone horses are gone
a cheerless hole where they 
had been tethered
Widening the  road, they said
for this beauty must go
the enlarged road can carry
more and more cars
until the enlarged road is
too small, they decide to
build a motorway 
with toll booth
The other side of this new
the road will be impossible 
to cross on foot
Neighbors often visited
becomes strangers 
Sun or rain, spectacular
my horses were
before turning into grit