That map shows the next closure zone on 35th SW as the Arbor Heights sidewalk project continues. The section between 104th and 106th is expected to reopen before the holiday, while the new closure between 102nd and 104th starts right after. From the newest SDOT project bulletin:

(Last) week, our crews continued detention pipe repair and testing work and began sidewalk construction on the west side of 35th Ave SW, between SW 104th St and SW 106th St. Unfortunately, our concrete provider was not able to deliver (Friday). However, the sidewalk is formed and we will complete the sidewalk concrete pours Monday, July 2 and Tuesday, July 3. This segment of 35th Ave SW will reopen to vehicular traffic by the end of the day on Tuesday, July 3. The new sidewalks on the west side of the street will remain closed until Thursday, July 5. For pedestrian access, please use sidewalk on the east side of the street.

Our crews will (next) begin sidewalk and driveway construction on the west side of 35th Ave SW, between SW 102nd St and SW 104th St. Beginning on Thursday, July 5, 35th Ave SW will be closed to through traffic between SW 102nd St and SW 104th St for two weeks so our crews can complete this work. Access will be maintained for residents located on these two blocks.* A detour will be in place beginning next Thursday, July 5.

More project details are here.