When ADA Compliance Runs Afoul of Seismology

Seismologists were recently upset by the loss of a curb at the corner of two streets in Hayward, California that displayed the power of the Hayward Fault. The city had repaired the curb to provide ADA access to the sidewalk and street.

1 minute read

July 10, 2016, 11:00 AM PDT

By James Brasuell @CasualBrasuell


Hayward Fault

The great power of the Hayward Fault was visible on the corner of Rose and Prospect streets in Hayward. | missyleone / Flickr

Rong-Ging Lin II reports on the outcry over a misunderstanding in the city of Hayward, California. Located there for many years, at the corner of Rose and Prospect streets, was a sidewalk pulled apart by the seismic activity of the Hayward Fault. According to Lin, the corner was considered by seismologists  as "a kind of Holy Grail, perfectly illustrating the seismic forces at work underneath this Bay Area neighborhood."

However, in early June, a city crew fixed the sidewalk, provoking the ire of seismologists. According to Kelly McAdoo, assistant city manager of Hayward, city crews did not realize that they had a seismological curiosity on their hands when they performed the ADA retrofit of the sidewalk. Nothing can be done about restoring the seismic timeline to the curb, but McAdoo acknowledges that the city will be happy to talk with seismologists about other potentially significant sites around town.

CBS San Francisco also covered the news about the contested curb in a television news segment.

Tuesday, July 5, 2016 in Los Angeles Times

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

September 23, 2026 - Zachary Whalen

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18, 2026 - Mass Transit

An Airo train driving towards the camera on a track. There is a forest behind it.

Northwest rail fans eager for Sept. 30 debut of Amtrak’s Airo fleet

Get ready for that new train smell and more seats. But they won’t go faster or run more frequently on the Cascades route in Washington and Oregon.

September 22, 2026 - Washington State Standard

Four cars of the LAX SkyLink. They are white, and there is no clear front or back. They have black windows.

LAX SkyLink opening delayed again, contractor won’t commit to new deadline

The project was supposed to open its doors to the public in 2023.

September 27 - LA Times

A Caltrain train picks up a large crowd of people at a station.

Caltrain may slash over one-third of its stations

If Bay Area voters reject two transit tax measures, Caltrain, BART and AC Transit will see steep service cuts.

September 27 - Mercury News

An aerial view of Interstate 77 crossing a body of water.

A 'dangerous' precedent: North Carolina successfully pressures communities into voting for toll roads

Two mayors resigned from the Charlotte Regional Transportation Planning Organization after it voted in favor of the toll roads.

September 27 - Spectrum Local News

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design