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Manchester, NH: City
Monday August 10th, 2026 :: 09:30 a.m. EDT

Advisory

Mammoth Road Traffic Impact Notice: Starting August 24th, 2026

As part of the Cemetery Brook Drain Tunnel Project, a portion of Mammoth Road between Porter Street and Nelson Street will be reduced to alternating one way traffic. 

  • Closure begins:  August 24th  
  • Anticipated reopening: August 29th  
 
What to Expect: 
  • One-way alternating traffic or two-way shifted traffic 
  • Driveway access to local businesses and homes within closures will be maintained and closely coordinated by the Contractor.  
  • Please plan ahead and utilize alternate travel routes. 
 
We appreciate your patience and cooperation as we work to enhance our community’s infrastructure. 
 
Sincerely, 
 
Environmental Protection Division 
Department of Public Works 
City of Manchester 
 

Address/Location
Manchester, NH: City

Manchester, NH 03101

Contact
Emergency: 9-1-1

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