Oakland Heritage Alliance is offering a tour of the Posey Tube Oakland Portal with CalTrans. The tour is limited to 10 people and will be on a first-come first-served basis, because space in the Portal is very limited, and because we must adhere to CalTrans regulations. The tour is not ADA compliant.

It is likely that more tours will be offered this year and possibly next year. The California Preservation Foundation held a webinar which covers much of the same material

• Webinar and tour: https://www.youtube.com/watch?v=WiY0HnDnOdI (106 minutes)

• Tour only: https://www.youtube.com/watch?v=hRMllGYtdBY (26 minutes)

To sign up for the tour, please visit the tickets page.

This tour is offered as part of a mitigation program due to planned changes to the area around the Portal, which is a historic resource covered by the California Environmental Quality Act.

Learn more about this tour via Oaklandside.

Read the Historic American Engineering Record, prepared by JRP Historical Consulting.

Oakland Heritage Alliance is offering a tour of the Posey Tube Oakland Portal with CalTrans. The tour is limited to 10 people and will be on a first-come first-served basis, because space in the Portal is very limited, and because we must adhere to CalTrans regulations. The tour is not ADA compliant.

It is likely that more tours will be offered this year and possibly next year. The California Preservation Foundation held a webinar which covers much of the same material

• Webinar and tour: https://www.youtube.com/watch?v=WiY0HnDnOdI (106 minutes)

• Tour only: https://www.youtube.com/watch?v=hRMllGYtdBY (26 minutes)

To sign up for the tour, please visit the tickets page.

This tour is offered as part of a mitigation program due to planned changes to the area around the Portal, which is a historic resource covered by the California Environmental Quality Act.

Learn more about this tour via Oaklandside.

Read the Historic American Engineering Record, prepared by JRP Historical Consulting.