State Highway 1 passes through Balclutha's town centre on Clyde St and heavy traffic uses two bypass routes - Charlotte St for northbound traffic and James St for southbound.
Charlotte St houses many businesses, council-owned flats, bowling club, a playcentre and a popular park, as well as the Balclutha Motor Camp.
Mr Bradshaw said it was only a matter of time before someone was hurt crossing the busy street.
"They [trucks] just race up the road. There are no pedestrian crossings along the whole street. It's not a very good situation."
Mr Bradshaw became fully blind about 12 months ago and relies on his hearing and a stick to cross the road.
Mrs Bradshaw said she saw a small child on a bike involved in a near-miss.
"Just the other week I saw a child - she was quite small - biking across the road from Pearson's Lane. She did not see the truck coming and the driver had to slam on his brakes. It wasn't the driver's fault but there is nowhere to cross the road."
Mrs Bradshaw said she used a walker when she was out and about, and would check both ways before crossing the road but found traffic would "suddenly appear out of nowhere", travelling in either direction.
Mr Bradshaw said he wanted the council to discuss the issue in "all seriousness".
"We do want a proper bypass. We don't want to wait when people's lives are in danger. It's very frustrating."
Council district assets manager Jules Witt said the bylaw did not mean that heavy traffic could not use the bypass for both directions.
"On both of these bypasses there are a number of businesses where heavy traffic may have valid reasons to use the opposite bypass in order to reach them."
The bypass was created to keep heavy traffic off the main street, he said.
Mr Witt said the council was not considering adding safety features to either of the bypass routes, and said there had been no issues on either street. Some residents had contacted the council, but staff needed to know the specific issues.
Mr Witt said anyone with traffic concerns should contact the council.
The council would be discussing traffic bypasses next year, and would consider any issues arising on either route.
The council began the first stage of public consultation in July and August this year.
A traffic management study group was formed to discuss the Balclutha streetscape, including the bypasses, and would look at the future of traffic flow in the town.
