The old brick archway, which was part of a cluster of structures linked to an old mill, has been almost entirely restored.
The archway was used as a bridge and was at risk of collapse last year when conservation experts started work to restore it.
Now the structure, and works to restore the riverbanks around the archway, are almost complete and are expected to open again in February.
Cllr Ian Carey said:
“It is really impressive what has been done here. I wasn’t sure what the works would look like as so much of the structure had been lost. The conservation builders have done a really good job and it bodes well for other structure in need of repair, in particular the arches at the edge of Usher’s Lake.”