Uniting Hart and Spirit Plazas: Bridge or Tunnel?

[Hypestyles]

so what is the least expensive option? What time of day/night would such a structure be open/closed?
What are the law enforcement implications for either? [[For the underground option in particular, a permanent officer on duty?)
Even in terms of the costs, how is it paid for? Another bond proposal? Uh-oh. City residents who rightly feel that many city services are dysfunctional will not be on board. Tread carefully.