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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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Tree Trimming and Protection

To protect trees from damage by large construction equipment, it is necessary to trim tree branches at appropriate clearance levels from the street and curb where construction will occur. A general rule is 15 feet at each curbside and 20 feet in the center of the street. Typically, branches hanging over the sidewalk will not be trimmed.

During the design of a sewer or stormwater project, a certified arborist will tour the project area to determine where trees will need to be trimmed before construction can occur on that street. All tree trimming work will be supervised by a certified arborist and will be done at the city's expense.  

Before construction begins on a street, crews will install tree protective fencing where necessary to protect tree trunks, roots, and branches from damage. The orange fencing will remain in place until construction is completed.