From Portland Parks and Recreation: 

The playground at Harney Park, SE 67th Avenue and Harney Street, will be closed for use this Friday, May 11, for geotechnical work.  This work will inform the design work for drainage improvements at this playground. Construction for these improvements will occur in summer – fall 2019. The nearest playground for use during this closure is Flavel Park at SE 75th Avenue and Flavel Street.

More info at: portlandoregon.gov/parks/76593.