Committee hears pleas to preserve street trees as city explains limits of reconstruction work

Summary

Committee members, the city forester and engineering staff discussed why many street trees are removed during full street reconstruction, described the design constraints that force removals, and heard alder and resident calls to adopt stronger preservation processes and to reengage experts who helped other cities conserve trees.

The Infrastructure and Facilities Committee on June 12 held an extended discussion on tree preservation during street reconstruction projects, with alder members and residents urging the city to adopt more rigorous protections and staff explaining engineering and utility constraints that often require tree removal.

TJ (engineering staff) outlined the design process used for reconstruction projects and said decisions about curb-to-curb width (typically 33 to 37 feet) and the need to replace underground utilities drive how much terrace/boulevard remains for trees. He noted water mains are typically about 8 feet deep, sanitary sewers can run 8—2 feet or deeper (and in some locations reach 20 feet), and required separations between utilities and large excavations often leave little unexcavated soil in the terrace for tree roots. The engineering presentation emphasized that "once we do finish our design, we hand that…

Committee hears pleas to preserve street trees as city explains limits of reconstruction work

Summary

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