Suicides at the Hoover Dam Bypass Bridge

There's been a rash of suicides (4 since April) from the Hoover Dam Bypass Bridge:

http://www.8newsnow.com/story/19104102/deaths-at-hoover-dam-bypass-bridge-raise-concern

I especially "like" the last paragraph of the article:

"Transportation department officials decided there was no effective deterrent to stop people from jumping from the bridge."
Really?