Council on Tuesday agreed to spend $7.4 million to finalize the tunnel project design and then seek additional funding to cover the construction shortfall, estimated at $34 million to $43 million, according to Public Works Director Azalea Mitch. The city has $22 million set aside for the Middle Avenue tunnel. Residents who were for and against the $62 million project spoke to council at the hearing. The city hasn’t considered the cost of maintaining the tunnel and of police patrolling the area, Kayton said. The idea to build a tunnel under the railroad tracks has bounced around for decades, but the most recent plans started in 2016.