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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

More Contact Info

I-5, SW Barbur, SW 26th Stormwater Management

Read tje Terraced Rain Gardens project fact sheetTerraced Rain Gardens Project

Barbur Court Off-Ramp Closure

CONTACT: Joe Annett, 503-823-2934

Construction has started on a series of terraced stormwater rain gardens and collection pipes to protect Tryon Creek water quality and prevent stream bank erosion. Daytime closures of the SW Barbur Court off-ramp began August 19 to allow construction crews to unload and install prefabricated, concrete vaults.

The off-ramp closes from 7:00 a.m. to 4:00 p.m. Monday through Thursday and re-opens to traffic after work hours. This phase of the project should be completed in early September 2014. See the map below and the reference number 3 for the location of the work. Please be aware that this schedule is subject to change due to conditions underground, weather, traffic impacts, subcontractor schedules and availability of materials.

Project Schedule and Closures

As the contractor installs pipe over the next few months, there will be lane restrictions and closures at the following locations (see numbered locations on map):

  • 1: I-5 northbound shoulder and lane closure 8:00 p.m. - 5:30 a.m. Monday through Friday, 8:00 p.m. – 8:00 a.m. Saturdays, 9:00 a.m. – 8:00 p.m. Sundays. Tentatively schedule the week of October 6 and lasting three weeks.
  • 2: - SW Barbur Boulevard northbound crossing will restrict lanes 9:00 a.m. – 6:00 p.m. Monday through Friday. Tentatively scheduled the week of September 15 and lasting two weeks.
  • 2: - SW Barbur Boulevard southbound crossing will restrict lanes 7:00 a.m. – 3:00 p.m. Monday through Friday. Tentatively scheduled the week of September 15 and lasting two weeks.
  • 3: – SW Barbur Court off-ramp closed 7:00 a.m. – 4:00 p.m. Monday through Thursday August 19 through August 27.
  • 4: – SW 26th Avenue and SW 26th Way crossing will restrict lanes. Flaggers will maintain two-way traffic. Tentatively scheduled the week of September 8 and lasting one week.

You will be notified before works starts at each location.

Project Information

When it rains, stormwater runoff from I- 5, SW Barbur Boulevard and SW 26th Avenue drains directly to Tryon Creek. Stormwater runoff carries pollutants to the creek, and high runoff volume and velocities erode stream banks. The rain gardens will collect sediments and pollutants before the water enters Tryon Creek. This project also includes installing new pipes that will direct stormwater from various locations into these facilities for filtration. This project will protect Tryon Creek water quality and help prevent stream bank erosion.

What to Expect During Construction

  • There will be noise, vibration, dust, traffic congestion, temporary parking loss, lane reductions, street closures in the construction zone, and disruption to normal neighborhood activity.
  • Daytime work hours are 7:00 a.m. to 6:00 p.m. Monday through Friday. The contractor may schedule work during the same hours on Saturdays.
  • Night work hours are 8:00 p.m. to 5:30 a.m. Monday through Friday. You will receive notification before overnight construction begins.
  • Some streets will close to through traffic during work hours, but the contractor will maintain local access. You may experience delays getting to your home or business.
  • Parking is prohibited in work zones during work hours.
  • TriMet will relocate some bus routes and bus stops during construction phases. Go to to see schedule changes or call 503-238-7433.
  • Construction will not interrupt other utilities.
  • A city construction inspector is on-site during work hours. The on-site inspector may be able to help you with any immediate needs.Equipment and materials will be secured on the street after work hours.
  • Please contact me if you have concerns such as maintaining driveway access, business operations, medical deliveries, etc.

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