News

County reopens one lane of Stanley Boulevard eastbound after major trail erosion

Several square yards of pathway buckle, slide down embankment toward lake

A segment of the trail pathway adjacent to Stanley Boulevard collapses last weekend, leading to the closure of the eastbound side of the thoroughfare. (Photo courtesy City of Pleasanton)

Stanley Boulevard, a major east-west thoroughfare between Pleasanton and Livermore, had one eastbound lane reopened to vehicular traffic early Monday evening after both lanes were closed for more than a day as a result of serious trail erosion adjacent to that side of the roadway.

Another angle of the damage, looking toward Shadow Cliffs Lake. (Photo courtesy City of Pleasanton)

The eastbound direction was first shut down on Sunday near Shadow Cliffs Regional Recreation Area, and those lanes remained closed through the morning and afternoon commutes on Monday until one lane reopened that evening. The westbound lanes were not affected.

That portion of Stanley Boulevard is in Alameda County's jurisdiction. The Alameda County Public Works Agency reported its crews were reopening one lane between Valley Avenue and Lilienthal Road, while the city of Pleasanton would be concurrently closing 300 feet of roadway, making two turn lanes unusable.

A county engineering team was out at the scene assessing the situation, but the cause of the erosion had not yet been determined, county officials said late Monday afternoon.

According to photographs from the scene provided by city and county officials, several square yards of paved trail and adjacent natural landscape between Shadow Cliffs Lake and Stanley Boulevard buckled and fell down the embankment, leaving a large sinkhole. A significant crack also resulted across eastbound Stanley Boulevard.

Work has begun to address the sinkhole on the trail parallel to eastbound Stanley Boulevard. (Photo courtesy Alameda County)

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Jeremy Walsh
 
Jeremy Walsh, a Benicia native and American University alum, joined Embarcadero Media in November 2013. After serving as associate editor for the Pleasanton Weekly and DanvilleSanRamon.com, he was promoted to editor of the East Bay Division in February 2017. Read more >>

Follow PleasantonWeekly.com and the Pleasanton Weekly on Twitter @pleasantonnews, Facebook and on Instagram @pleasantonweekly for breaking news, local events, photos, videos and more.

County reopens one lane of Stanley Boulevard eastbound after major trail erosion

Several square yards of pathway buckle, slide down embankment toward lake

by / Pleasanton Weekly

Uploaded: Mon, Mar 13, 2023, 12:34 pm
Updated: Mon, Mar 13, 2023, 8:30 pm

Stanley Boulevard, a major east-west thoroughfare between Pleasanton and Livermore, had one eastbound lane reopened to vehicular traffic early Monday evening after both lanes were closed for more than a day as a result of serious trail erosion adjacent to that side of the roadway.

The eastbound direction was first shut down on Sunday near Shadow Cliffs Regional Recreation Area, and those lanes remained closed through the morning and afternoon commutes on Monday until one lane reopened that evening. The westbound lanes were not affected.

That portion of Stanley Boulevard is in Alameda County's jurisdiction. The Alameda County Public Works Agency reported its crews were reopening one lane between Valley Avenue and Lilienthal Road, while the city of Pleasanton would be concurrently closing 300 feet of roadway, making two turn lanes unusable.

A county engineering team was out at the scene assessing the situation, but the cause of the erosion had not yet been determined, county officials said late Monday afternoon.

According to photographs from the scene provided by city and county officials, several square yards of paved trail and adjacent natural landscape between Shadow Cliffs Lake and Stanley Boulevard buckled and fell down the embankment, leaving a large sinkhole. A significant crack also resulted across eastbound Stanley Boulevard.

Comments

Longtime Resident
Registered user
Amador Valley High School
on Mar 13, 2023 at 8:46 pm
Longtime Resident, Amador Valley High School
Registered user
on Mar 13, 2023 at 8:46 pm

Not the first time this has happened. Not surprised.


Becky
Registered user
Livermore
on Mar 14, 2023 at 7:39 am
Becky, Livermore
Registered user
on Mar 14, 2023 at 7:39 am

I would not trust that eastbound lane. I won't be using Stanley, probably ever again.


keeknlinda
Registered user
Vintage Hills
on Mar 14, 2023 at 11:51 am
keeknlinda, Vintage Hills
Registered user
on Mar 14, 2023 at 11:51 am

Amid the hue and cry for Shadow Cliffs to be filled up once more, this should make folks think about the last time Stanley was closed for what, nearly a year? Maybe there is a hydrologic/geologic reason for not pumping from the Arroyo.


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