sentences:  NZTA's traffic modelling indicated that two-lane tunnels would reach capacity within 10 years of operation.Map of Tunnel Route
  
  Transit NZ's board resolved to seek a designation over land for a $1.89 billion pair of motorway tunnels through Waterview.The board called for a report from officials on managing fumes from the tunnel "to benchmark the proposed approach incorporated in the design work to date against current international best practice".