Dean and Jane Warburton were killed in the accident on the A49 between Dorrington and Bayston Hill on July 1.
Dean, 38, and Jane, 69, were from the Bucknell area.
Tributes have been paid to both victims, who were well-known across south Shropshire and Mid Wales.
Dean was a well-known artist, often working across the Welsh border in Llandrindod Wells.
The accident happened at about 10.50am, leading to the A49 being closed between Shrewsbury and Church Stretton into the evening while police conducted investigations.
The lorry driver was not injured.
Described as subversive, playful and original in his approach, Dean was known for scouring charity shops, salvage yards and skips in search of materials and "reclaiming" them in his work, from ladies' clothes and handbags to discarded pieces of bric-a-brac, as well as painting.
He also took part in mentoring programmes for artists with learning disabilities, mental health issues and from other socially excluded groups.
A statement on behalf of the Celf o Gwmpas Centre in Llandrindod Wells, where Dean worked, said it was "devastating news" and described him as "fabulous".
It added: "All staff and trustees would like to send their love and respect to the family at this most difficult time.
"Dean will be greatly missed by all at Celf. His enthusiasm, love of art and talent for performing was raw, natural and beautiful."
Speaking on the Celf o Gwmpas Facebook page, friend Richard Morgan said: "The one thing that always struck me about Dean was that although he had difficulties, he never let them hold him back.
"Celf gave him opportunities that he grasped and explored with an infectious enthusiasm that made him very likeable and endearing. He is a great loss. Rest in peace with your Mum."
Well-wisher Myk Gregory said: added: "My parents and I remember Dean well, especially from our trip to Scotland where we had a great opportunity to get to know him and his brother better.
"He is still the most spontaneously creative person we've ever met. Our thoughts are with his family."
Investigations into the accident were today continuing. Kieren Bodill, speaking for West Mercia Police, said: "We are still appealing for witnesses and would urge anyone with any information to get in touch."
Anyone with information should call 101 quoting 0216S of July 1.