The north and south bridges in Coles Island are going to be replaced with two levels of government footing the bill.
The province and the feds are kicking in nearly $45-million over the next four years for the project.
The government says Route 10 is a trade corridor for the forest industry which employs almost 22,000 people in New Brunswick.
The aging bridges are currently reduced to one lane of traffic.
The federal government is funding up to $22-million while the province is going to fund nearly $23-million for the project.