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Welcome to the McKinley Water Vault construction website. Here you can find information about the Vault's construction impacts and progress.


The McKinley Water Vault is an underground storage tank that will hold combined storm water and wastewater during big storms when the combined sewer system is at capacity. It will be located underneath the George “Butter” Cole Field in McKinley Park and protects property and people by reducing street flooding and combined sewer system outflows. The project’s construction includes $1 million of enhancements to McKinley Park including new shade structures, replanting trees, new bathrooms and enhancing some of the running track.




The McKinley Water Vault construction is nearing completion. The FILL phase is now 100% complete and the ENHANCE phase has started and is anticipated to be completed in October. Some activity to expect include temporary sidewalk closures, temporary street closure, pedestrian and jogging path detours and increased truck traffic. We will continue to update the community about any anticipated construction impacts, as the ENHANCE phase comes to an end.

Construction updates will be sent through e-blasts - social media and this website will also be kept up to date. Sign up for construction email alerts to be notified of ongoing updates or changes.

33rd Street from Park Way to McKinley Blvd. is Closed (Starting Monday, June 17, 2019)
33rd Street from Park Way to McKinley Blvd. will be closed during the project’s construction. Below is a map of possible routes to consider. Please continue to use traffic safety precautions and be aware of your surroundings when driving, walking, jogging and biking in Sacramento.

Updated Traffic Route

 Detour Map



*Timeline subject to change.



The McKinley Water Vault construction is broken into four phases. The phases outline what’s being completed, anticipated impacts and planned mitigation efforts to reduce the impact on the community’s day-to-day life.


The dig phase involved mobilizing to the construction site, traffic control, prep and excavation. 


BUILD is the second construction phase, when the contractor built the concrete vault. It took place fall 2019 to fall 2020.

Community Impacts

  • Truck traffic (concrete trucks arriving on site, early morning to early afternoon two to three days a week; this is 70% less than the DIG phase)

  • Dust

  • Noise

  • Parking 


The contractor will import dirt to bury the newly constructed vault.

Anticipated Community Impacts

  • Truck traffic

  • Dust

  • Noise

  • Parking impacts


Throughout the project, Utilities coordinated with stakeholders, the public and the Department of Youth, Parks and Community Enrichment to obtain feedback and input about the type of park enhancements they want to experience. Enhancements will include:

  • Jogging path improvements

  • New restrooms

  • New picnic area tables, benches and BBQ pits

  • New shade structures

  • Estimated 60+ trees

  • New landscaping

Review park enhancement FAQs.

Review the park enhancement renderings. 


Review construction FAQs.

Check out this video that explains how the McKinley Water Vault works.

Check out this video that explains how the Combined Sewer System works.