Project Overview
Work for the Elwyn Road Drainage Improvements Project will replace the aging drainage system within Elwyn Road from Edgewood Road to Taft Road.
In addition to replacing the drainage system, work includes:
- Upgrading the water main on Grant Ave from Elwyn Road to Edgewood Road from a 2” pipe to an 8”
- Reconnecting water services (City owned side of the service only) to properties on Elwyn Road and Grant Ave from current undersized 2” water mains to new and existing 8” mains
- Installation of a fire hydrant at the corner of Elwyn Road and Grant Ave
- Final paving within the project’s construction limits
Work is expected to begin March 17, 2026 and conclude Fall of 2026.
Project Design is by CMA Engineers, Inc.
The Construction Contract for this project has been awarded to Granese & Sons Inc.
On-site Contact: John McCarthy
Resident Representative
(603) 498-0298
Area of Impact
Project Updates
Subscribe to UpdatesFor the week of June 22, 2026 Jun 22, 2026
All utility work and the base layer of pavement have been completed on Elwyn Road. The final surface layer of pavement will be placed later this fall from Taft to Lafayette and on Grant from Elwyn Road to Edgewood. Work on driveway aprons is scheduled for June 25 and June 26. This will include preparation and placement of the first layer of pavement. The final driveway apron surface will be completed in the fall in conjunction with the final paving of Elwyn Road. Final site restoration including loaming and seeding of disturbed areas will take place in the fall.
For the week of June 8, 2026 Jun 8, 2026
All underground utility work has been completed ahead of schedule. Road reconstruction activities between Taft and Edgewood Roads, including base course paving, are scheduled to begin the week of June 8 and continue through the week of June 22, 7 am to 6 pm. During this phase of work, westbound traffic on Elwyn Road will be detoured via Taft Road to Wilson Road, and then to Route 1 (Lafayette Road). Eastbound traffic from Route 1 (Lafayette Road) will be maintained with one lane of travel. Local traffic will be accommodated. Two-way traffic will be restored at the end of each workday. Signage, flaggers, and police details will be stationed at strategic locations along the detour route to direct and manage traffic through the Elwyn Park neighborhood. Final paving and restoration -- including loam and seeding of disturbed areas -- will take place in the fall. The Department of Public Works hosted an Elwyn Road Reconstruction Project Public Information Meeting in the DPW Training Room (680 Peverly Hill Road in Portsmouth) on Wednesday, March 11, 2026.
For the week of April 13,2026 Apr 13, 2026
Construction is currently underway, with alternating single-lane traffic between 7:00 AM and 6:00 PM. Flaggers are on site to direct vehicles. Motorists are encouraged to use alternate routes if possible.
For the week of April 6, 2026 Apr 6, 2026
Construction is currently underway, with alternating single-lane traffic between 7:00 AM and 6:00 PM. Flaggers are on site to direct vehicles. Motorists are encouraged to use alternate routes if possible.
For the week of March 30, 2026 Mar 30, 2026
Construction is currently underway, with alternating single-lane traffic between 7:00 AM and 6:00 PM. Flaggers are on site to direct vehicles. Motorists are encouraged to use alternate routes if possible.
For the week of March 23, 2026 Mar 23, 2026
Construction is in progress, with alternating single-lane traffic from 7 AM to 6 PM. Flaggers are in place to assist.
For the week of March 16, 2026 Mar 16, 2026
Construction is scheduled to start Tuesday, March 17, with alternating, single-lane traffic from 7 am to 6 pm. Flaggers will be in place to assist.
Project Documents
General
Project Video
3.11.2026 Elwyn Road Project Public Information Meeting
Project FAQ
Are there multiple projects on Elwyn Road?
Yes. There are multiple projects in the Elwyn Road area, and each has a different purpose and scope:
- The Elwyn Road Project focuses on drainage, water, and roadway improvements
- The Elwyn Park Sidewalks and Traffic Calming Project focuses on sidewalks and neighborhood traffic calming
- The Elwyn Road Side Path Project focuses on a shared-use path for pedestrians and bicyclists
These projects are planned and managed separately. Residents should refer to each project page for specific details about the work included and project timelines.
Elwyn Road Drainage Improvements Project?
The Elwyn Road project is a drainage and roadway improvement project that will replace the aging drainage system along Elwyn Road and include related water and roadway upgrades.
What work is included in the project?
The project includes:
- Replacement of the existing drainage system
- Upgrading the water main on Grant Avenue
- Reconnecting water services to properties
- Installation of a new fire hydrant
- Final paving within the project limits
Where is the work taking place?
The drainage improvements will occur on Elwyn Road from Edgewood Road to Taft Road, with related water main work on Grant Avenue between Elwyn Road and Edgewood Road.
How will traffic be managed during construction?
During construction, traffic on Elwyn Road will be reduced to alternating single-lane traffic, with flaggers present to assist and maintain safe travel through the work zone.