The blessing itself was led by local kaumatua Hōri (George) Reti.
"Christie has transformed the site beyond our expectations and produced a wonderful mural that everyone cycling or walking along the underpass will appreciate," regional transport systems manager Oliver Postings said.
"The Ahuriri Estuary is one of the most significant bird habitats of its type on the east coast of the North Island."
More than 70 resident and migratory bird species feed and rest in the area, including the pied stilt.
"Over the years the Ahuriri Estuary bridge has been marred by vandalism and graffiti, so we're pleased to be able to brighten it up with beautiful artwork that truly reflects the area, including the birds that inhabit the estuary," Postings said.
Those who attended the special blessing were (as in the photograph L-R) artist Christie Wright, Hōri (George) Reti (kaumatua and chairman of Te Taiwhenua o Te Whanganui-a-Orotū), Vicki Butterworth from the Hawke's Bay Regional Council, Jennifer Wilson-Kaio (NZTA), Tania Eden (general manager, Te Taiwhenua o Te Whanganui-a-Orotū), Oliver Postings (NZTA) and Larry Weller (NZTA).