The 2 km Auckland Harbour Bridge that connect the north and south shores in Auckland City New Zealand does not have any walking or cycling on it. It is for motorized vehicles only. Originally the paths were planed but were never built as the money was not available. The bridge was built with 4 lanes in 1959 and later in 1969 another 4 lanes were clipped on the original structure.
Since that time walkers and cyclists have advocated for a way across.
I am part of the current push to get this access.