JULY 17, 2014
The Grant Park Sewer Repair Project will replace or repair about 11,500 feet of public sewer pipes that are between 89 and 104 years old and failing due to age. This project will increase sewer capacity and reduce the risks of street flooding and sewage releases to homes, businesses and streets. Construction should be completed by March 2015.
Night Construction on NE Broadway at 33rd Avenue
- Overnight sewer construction continues at the intersection of NE Broadway and NE 33rd Avenue. Work hours are 8:00 p.m. to 6:00 a.m.
- The nighttime work at that intersection detours traffic to I-84 westbound and to 33rd Avenue southbound when all southbound travel lanes on 33rd are closed at Broadway.
- By Wednesday, July 23, the crew is expected to transition to day work on NE Broadway and return in about a week for one final night to repave the intersection.
Daytime Construction expected to begin on NE Broadway on Wednesday, July 23
- After repairs are completed at the intersection with 33rd Avenue, work on NE Broadway will move west toward NE 27th Avenue, with daytime work hours from 7:00 a.m. to 6:00 p.m. Monday through Saturday.
- Motorists should expect delays on NE Broadway, but there will be one lane in each direction at all times and two lanes in each direction by the afternoon commute. Work on NE Broadway should be completed in September.
- There will be intersection closures at NE 32nd, 30th and 28th avenues. The closures will not occur at the same time. The temporary closure at NE 32nd Avenue should occur in the next two weeks. Watch for signs.
- TriMet will temporarily relocate bus stops along NE Broadway as needed during the summer.
- The contractor is scheduling work on residential streets, including pavement restoration work on US Grant Place and returning to complete the work started on NE Hancock Street. The work on these streets will likely occur after work in NE Broadway is compete.
What to Expect During Construction
Work hours are 7:00 a.m. to 6:00 p.m. Monday through Friday, but the contractor may schedule work during the same hours on Saturdays. There will be night work on NE Broadway at 33rd Avenue in July.
Construction will create noise, vibration and dust and will disrupt normal neighborhood activity.
Traffic control signs will be set up, and flaggers may direct traffic on higher-volume streets.
On-street parking in or near active work areas is prohibited during construction hours. Please plan to move your vehicle by 7:00 a.m. in work zones.
Equipment and materials may be stored on nearby streets overnight.
There may be periods of inactivity between construction phases.
A city inspector will be on-site during work hours and may be able to assist you with construction concerns. Inspectors typically wear a green safety vest with “City of Portland” across the back and a hard hat.
Please stay clear of all construction activities and keep children and pets out of construction areas.
You should receive a doorhanger notice a few days before work starts on your street.
Sewer Construction Methods
The city will use a combination of open trench construction, cured-in-place-pipe lining (CIPP), and pipe bursting for this project. The contractor may use more than one construction method in some areas. For example, the contractor may use CIPP on the main public sewer pipe and open trench construction to repair or replace laterals that connect private sewers from the curb to the public sewer in the street.
Open trench installation is done in phases:
- Saw cut pavement along the width of the trench
- Remove pavement and existing material
- Install public sewer pipe in the street
- Backfill trench with sand or gravel
- Replace laterals that connect private sewers to the system (from the curb to the street)
- Restore surface temporarily with an asphalt patch
- Complete final paving
- Restore other areas disturbed by construction, such as sidewalks, driveway aprons and planting strips
Cured-in-place-pipe lining (CIPP) doesn’t require digging a trench. Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. Hot water or steam inflates and cures the liner, which gradually hardens to form a rigid, smooth surface that seals cracks and restores the pipe to near-new condition. People who live and work near a CIPP repair project sometimes smell a chemical odor during the pipe-lining work. The odor is from the chemical styrene, which is in the resin liner installed inside the pipe. The odor dissipates quickly once the installation process is complete. The amount of airborne styrene produced is not a human health risk.
Pipe bursting involves digging an access pit and inserting a bursting head into the existing sewer line. The bursting head breaks the old pipe apart and pulls the new pipe into place behind it. Construction crews retrieve the bursting head from a second access pit.
Thank you in advance for your cooperation during this project. Please let us know if you have concerns such as business operations, disability issues, or medical or business deliveries. As always, we’ll strive to provide quick response to your concerns, minimal disruption near your residence or business, and open and clear communication with you throughout the project.
For More Information
Contact Kristen Kibler with JLA Public Involvement at 503-235-5881, extension 106, if you have concerns, such as maintaining driveway access, business operations, or medical deliveries, during construction.
Email Kristen with "Grant Park" in the subject line to receive project updates by email. During construction, we will be sending regular email updates to keep you posted about the schedulem, construction activities, possible traffic detours and delays, parking restrictions and other impacts.