• Portions of Yellowstone’s Northeast Entrance Road in Lamar Canyon (between Tower Junction and Lamar Valley) were successfully blasted on June 5, 7 and 8. 
• Due to the large clean up and removal of materials associated with the blasting, closures originally planned for today (Monday), June 12, and June 15 are cancelled.  
• Additional blasting is needed to complete the job.  
• Additional blasting / road closure windows will now occur on June 14, from 7–9 p.m., and June 21 and June 22 from 7–9 p.m.   
• There is a likelihood the contractor will not need the entire 2-hour closure window and may open it sooner depending on clean up.  
• We appreciate the public’s understanding as we continue to finish work on this critical section of road.

Original source can be found here