Visit City of Portland, Maine Homepage
Project

Project Scheduling and Traffic Updates

Commercial Street Storm Drain Project – Traffic Pattern Update


Work is underway to prepare for the upcoming storm drain improvements on Commercial Street. Over the next several days, Chase Excavating will be installing traffic control devices and making preliminary changes to traffic patterns in preparation for the next phase of construction.


The transition to one-way alternating traffic on Commercial Street will take place once the contractor's slide rail shoring system is delivered and on-site, allowing storm drain work to resume. The contractor is taking a phased approach to implementing the traffic changes.


Upcoming Traffic Impacts and Schedule


Thursday, November 12, 2026 – Parking Restrictions

  • Temporary fencing will be installed in parking spaces along the west side of Commercial Street between Maple Street and Center Street.
  • No parking will be permitted in this area.

Monday, November 16, 2026 – Maple Street and Center Street Traffic Changes**

  • Maple Street and Center Street will be converted to one-way westbound traffic.
  • Additional traffic control signs will be installed and activated at affected intersections.

Commercial Street Traffic Pattern Change – Date To Be Determined

  • Jersey barriers will be installed along Commercial Street between Maple Street and Center Street.
  • Temporary traffic signals will be installed to manage alternating one-way traffic through the construction zone.
  • Temporary pavement markings will be installed, weather permitting.
  • Existing traffic signals within the work zone will be covered.
  • Once implemented, Commercial Street will operate under a 24-hour, 7-day-a-week alternating one-way traffic pattern through the construction area.

The timing of the Commercial Street traffic change remains dependent on the delivery and mobilization of the contractor's shoring equipment. The contractor will provide an updated schedule once the equipment is on-site and ready for use.


Motorists are encouraged to use caution when traveling through the area, follow posted signage, and allow additional travel time.


Thank you for your patience and cooperation as this important infrastructure improvement moves forward.

Commercial Street and Portland Fish Pier Storm Drain Outfall Project

Contact Us

Call 207-874-8881

Proposed Commercial Street Traffic Control Plan

Alternating One-Way Traffic Flow

Stay Informed

Stay in the loop with all the latest updates on upcoming engagements and project news by signing up for notifications.