Getting the mix just right means different lighting options are still being trialled on Whanganui's historic Dublin St Bridge.
The idea to festoon the steelwork on the bridge came from Whanganui district councillor Rob Vinsen who said he saw a similar bridge adorned with lights "and it looked fantastic".
Mr Vinsen said that work was commissioned last year to light up the bridge through external fundraising.
The proposal has received the support of the public art strategy group and members of the Powerco Community Trust Board.
The trial will cost the district council about $5000, but Mr Vinsen said the $90,000 estimate for the lighting will come from fundraising. "It was decided to trial one span only and Strong Electrical installed fittings late last year. But there was an insufficient throw of light beams along the structure so further fittings were required," he said.