Thursday, January 12, 2017




Effective January 12, 2017, a full closure of Calaveras Road to all types of thru traffic 7 days a week, 24 hours a day between Geary Road and Oakridge Road – near the Alameda/Santa Clara County line. 
This is due to storm damage along this stretch of road. Under normal conditions and the construction schedule, Calaveras Road would be open to thru traffic on weekends and holidays. However, this is no longer the case, and the road will remain closed every day to all traffic until further notice. 
Please avoid this area and use alternative routes.

The portion of Calaveras Road just south of Geary Road (location of entrance to Sunol Regional Wilderness) to Oakridge Road – near the Alameda/Santa Clara County line.

The closure will take place 7 days a week starting on January 12, 2017 and will remain in place until further notice. We are working with local responding agencies on this issue, and will keep you informed as we get additional information.

Please note: the entrance to East Bay Regional Park District’s Sunol Regional Wilderness will be open at all times from the north.

If you have any further questions, feel free to call our toll-free 24 hour answer line at
(866) 973-1476.

Wednesday, December 14, 2016

Holiday Construction Schedule and Calaveras Road Closure for Sunol Valley

Happy Holidays, Sunol Valley!

Here’s a schedule of where we’ll be working over the holiday season.

Calaveras Road Closure Holiday Schedule:

The portion of Calaveras Road Currently Closed to the public on weekdays will be:
  • Thursday, December 22, 2016 at 8:00 PM through Monday, December 26, 2016   OPEN to the public 
  • Tuesday, December 27, 2016 at 4:00 a.m. through  Friday, December 30, 2016:  CLOSED
  • Saturday, December 31, 2016 at 5:00 AM through Monday, January 2, 2017: OPEN to the public
  • Tuesday, January 3, 2017 at 4:00 a.m. – Friday, January 6, 2017: CLOSED
Prior to the road opening to the public, the road will be swept of debris.

Weekday closures will continue as planned Monday- Friday through December 31, 2017

Fish Passage Facilities Project within the Alameda Creek
Located in Sunol Regional Wilderness:

The project team will NOT be working:

December 24, 2016  to December 26, 2016

December 31, 2016 to January 2, 2017

As always please don’t hesitate to contact us at 866-973-1476, or or with any questions.

Tuesday, November 22, 2016

Sunol Valley Construction Updates for the Thanksgiving Weekend

The wild turkeys are out and about at the Calaveras Dam Replacement Project. For the upcoming Thanksgiving Holiday weekend, we wanted to share with you some reminders for our projects:

Calaveras Road Users:
The closed portion of Calaveras Road will be OPEN to the public this Thanksgiving Holiday on November 24, 2016 and the day after Thanksgiving on November 25, 2016. The road will be closed again on Sunday, November 27, 2016 at 11:00 p.m.

Please see more details by visiting
Thank you for your ongoing patience during our road closure.

Calaveras Dam Replacement Project
Constructions crews are off on the Thanksgiving  Holiday on November 24, 2016 and the day after Thanksgiving on November 25, 2016. Regular work will resume on November 28th.

Fish Passage Project within Alameda Creek Watershed
Constructions crews are off this week and there will be no construction activity at the Fish Passage project site located in Sunol Regional Wilderness Park. Regular work will resume on November 28th.

From all of the construction teams, we hope you have a wonderful holiday weekend!

Friday, November 18, 2016

Fish Passage Facilities Project Celebrates Milestone for the Season

This week, the construction teams for the Fish Passage Facilities within Alameda Creek Watershed Project celebrated a few milestones. In preparation for the winter, much work must be completed within the stream. They have completed critical in-water work within the stream bed for the season. This work included completion of the conveyance structure. We also completed a concrete slab for the intake structure. The new intake structure will be constructed next year. All of this was work was completed while maintaining a safety record with zero recordable incidents this year.

View of conveyance structure completed with the Alameda Creek Diversion Dam in the background. The stream channel was also backfilled with river rock to winterize the site.

The construction teams took a break for a photo today
to celebrate maintaing a safety record for the project

Thursday, November 10, 2016

Building the Calaveras Dam Replacement Project Safely

Today, the Calaveras Dam Replacement Project took a moment to celebrate another safety milestone. We have reached over 105,000 safety hours with zero recordable incidents for this quarter. 

Our crews from the joint venture of Dragados USA, Flatiron and Sukut Construction have been working both day and night shifts in Sunol Valley. This safety record is very impressive with all the major work that has involved operating heavy machinery, prepping the foundation for the new dam, importing of materials to the site and placing materials to build the replacement dam. Along with a great safety record, we have also brought on over 280 new local hires to the project this quarter. 

Since construction began in 2011, we have reached over 1.4 million total working hours on the job. Our project has not had any lost time recordable incidents since 2012. We strive to maintain our safety culture here at the Calaveras Dam Replacement Project as we continue the critical work ahead to construct the replacement dam. 

Calaveras Dam workers pose for a photo today at the Safety Milestone celebration

Our workers have been working in tight areas where safety is always a priority

Friday, November 4, 2016

Photo Friday Fall Back

It is that wonderful weekend of the year when we gain an extra hour of sleep as daylight saving time ends. 

Thinking about those lighter mornings, here's a photo of dawn at San Antonio Reservoir in our Alameda Creek Watershed. 

See you around the Valley! And don't forget to set your clocks back one hour at 2:00 a.m. this Sunday!

Thursday, October 27, 2016

Spooky Old Adits

We wanted to share a spooky tale from the Calaveras Dam Replacement Project. It seems even state-of-the-art construction projects aren’t without their spooky places.

While moving the rock and soil to make space for the new replacement Calaveras Dam, workers uncovered what looked like holes dug into the area surrounding the existing dam.
The holes are actually adits excavated by the builders of the first Calaveras Dam. 

Technically, an adit is an entrance or tunnel into a mine. Back in the early 1900’s the best way engineers had to explore the rock and soil for a damsite was to excavate adits to look at the underground geology. There are 16 total adits that were uncovered at the site.

We knew about the presence of these adits before we started to dig for the new dam foundation. However, it didn’t ease the creepy feeling workers had when they uncovered them. And some even claim equipment broke down and didn’t work properly while they were working around the adits, as if they were haunted.

The adits are mapped and filled in with concrete or rock to stabilize the ground prior to constructing the new dam on top, and to seal in any spooks that might be still be there…just in time for Halloween!