11. HD-23-187 Ratify Change Order No. 4 in the amount of $80,500, Ratify Change Order No. 5 in the amount of $5,947, Authorize Change Order No. 6 in the amount of $191,739 and restore the Executive Director's authority for change orders to $200,000 for the Gerald Desmond Bridge Demolition Project, Kiewit Infrastructure West Co. (Construction Management - D. Lambrigger)