Depending on how dense the urban area the cost of moving utilities even before construction is astronomical. If it can be done to coincide with cut and cover it

Depending on how dense the urban area the cost of moving utilities even before construction is astronomical. If it can be done to coincide with cut and cover it can still be financial effective. It is highly disruptive to the entire area so it really depends on where the tunnel is being placed. Appropriate traffic and pedestrian accommodation plans are essential.