Town Square

Post a New Topic

New Bayshore Sound Wall

Original post made by Dick, Palo Verde, on Apr 18, 2007

The new 14-foot-high, 800-foot-long sound wall along Bayshore at the end of Loma Verde will undoubtedly reduce the noise level at the site of the new condominiums, but I wonder what effects it will have on the residents further away from Bayshore.

The sound patterns from similar walls have resulted in much greater noise levels at some locations. Has this been studied for this wall? The Weekly's article centered on how the wall is to be painted, but the noise issue could be of much greater concern.

Comments (3)

Like this comment
Posted by don't worry, be happy
a resident of Midtown
on Apr 18, 2007 at 7:18 pm

It's an interesting question. I spent a few minutes googling, and the closest to an emperical study that I could find was a 2002 science fair project that took various sound meter measurements at various distances from sound walls.

The basic conclusion appeared to be that one wall reduced db over no wall for those on the quiet side. The noisy side across the freeway, however, experienced significant reflected noise.

In our case, that's out towards the baylands.

The interesting case was two parallel sound walls. Due to the reflections and dispersion, the sound between 250-500 feet was noiser than no wall at all.

I think the conclusion is that unless you plan to live east of the wall, or Caltrans gets the crazy idea of lining both sides in this section, you'll be better off.

But two parallel walls

Like this comment
Posted by The Walled City
a resident of Another Palo Alto neighborhood
on Apr 19, 2007 at 2:03 am

1. Soundwalls reflect sound across the other side of the freeway as stated by DWBH. They may also increase sound volumes some distance away from the freeway, but that might be an effect of double sound walls (both sides of freeway).

2. There's a proposal to widen 101 between highway 84 and highway 85, and that might mean soundwalls for the length of Palo Alto.

3. My preference would be no art, just complete coverage with foliage. Foliage is most effective at reducing the reflections of sound from a soundwall.

Like this comment
Posted by joyce
a resident of Crescent Park
on Apr 22, 2007 at 1:11 am

Whatever happened to the gizmo someone was developing that was supposed to cancel sound in such situations.

Don't miss out on the discussion!
Sign up to be notified of new comments on this topic.


Post a comment

Posting an item on Town Square is simple and requires no registration. Just complete this form and hit "submit" and your topic will appear online. Please be respectful and truthful in your postings so Town Square will continue to be a thoughtful gathering place for sharing community information and opinion. All postings are subject to our TERMS OF USE, and may be deleted if deemed inappropriate by our staff.

We prefer that you use your real name, but you may use any "member" name you wish.

Name: *

Select your neighborhood or school community: * Not sure?

Comment: *

Verification code: *
Enter the verification code exactly as shown, using capital and lowercase letters, in the multi-colored box.

*Required Fields

Coming soon: Fire Oak & Barley in Palo Alto
By Elena Kadvany | 5 comments | 2,853 views

Meditation Before Medication for Better Mental Health
By Chandrama Anderson | 11 comments | 1,760 views

The Saddle Room – A True Friend of Kids
By Laura Stec | 2 comments | 1,683 views

July 27th: Colleges That Change Lives are Coming
By John Raftrey and Lori McCormick | 4 comments | 1,508 views

Moving Away - becoming long-distance friends
By Cheryl Bac | 6 comments | 902 views