Arroyo Mocho Medeiros Project

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About the Project

The Medeiros Reach Project will reconnect the Oak Grove Nature Reserve to the Arroyo Mocho Creek to act as a floodplain during high flow events.

Zone 7  awarded a construction contract for the Arroyo Mocho Medeiros Reach Floodplain Reconnection Project and construction will commence in approximately May 2022 to August 2022. With minimal trail impacts, non-native and invasive species control work will continue once a quarter until October 2023.

The project is located within the Medeiros Reach (N/S College Ave to Anza Way and E/W Arroyo Rd to Holmes St).

Zone 7 will do its best to minimize construction impacts as much as practical and in accordance with County and City ordinances.

Please be aware of construction activities over the duration of the construction period and please use caution while traveling in this area.

Construction Schedule & Updates

Expect typical construction noise during work hours (Monday - Friday, 8 am – 5 pm).

Arroyo Mocho Bike Trail will be closed for up to 6 weeks. Trail will be opened as soon as practical. Detour available.

Oak Grove Nature reserve will be closed for up to 3 months. Walking trails will be opened as soon as practical. Detour available.

Traffic control measures will be implemented to minimize impacts to vehicles, bicyclists, and pedestrians as much as possible. Site will be posted 14 days before mobilization.

Construction vehicles will be staged and parked off of College Blvd, please anticipate additional traffic on College Blvd.

For updated work locations and maintenance road/trail closures visit the Zone 7 Interactive Trail Maintenance Map.

Contact our Project Team

You may call (925) 454‐5021 with any concerns.

Please pardon any inconvenience this work might cause you.  We ask for your patience as we coordinate construction activities with the City of Livermore. We thank you, in advance, for your cooperation in this matter as we work to maintain and improve your flood protection channels.