Third St. Bridge siren in San Francisco

[Daniel]

This bridge was constructed in the 1930’s and while the lift siren sounds like an STL-10, could it possibly be a six-port Bullard?

https://youtu.be/CLtKSGNJvak

[JasonC]

Wow, he's having a lot of fun with the siren. As far as I can see on Street View, there is a Model D at eye level on the north end of the bridge, a Model A on the south end (both mounted to street light poles), an ATI on a pole on the south end of the bridge, as well as a couple of large speakers on the operators tower. No sign of the STL10, although it does sound somewhat muffled

[archizackture]

This bridge was constructed in the 1930’s and while the lift siren sounds like an STL-10, could it possibly be a six-port Bullard?

https://youtu.be/CLtKSGNJvak

Where is the siren exactly? I looked around in street view taken in 2013 and saw the ATI speaker array (definitely not it) and the Models A and D (probably the high-pitched sound at the beginning of the video) but I couldn't find any others. It definitely sounds like an STL-10 to me though.

[coastalsyrolover]

It’s kind of hard to tell but maybe? I’d like to know more too.

[FSThunderboltfan1000]

I found it definitely not an STL-10.

[Synther]

It's a Bullard. I remember someone posted a picture of it a while ago, and I can't find it.

[siren_face2000]

I love how they use the classic "Train crossing bells" during the bridge lifting & dropping. And I like the siren usage too! I know one is used to warn people & vehicles that the bridge is about to lift, and another is used while the bridge is lifting & dropping. Neat video!!!

[Valra Bellkeys]

I found it definitely not an STL-10.

If that is the siren sounding, which I bet it is, that is absolutely amazing. Like Tristan suggested, appears to be a Bullard. The first recording of a Bullard, other than the news clip featuring the high pitch rotating one going off.

[JasonC]

Here's another video with the camera pointing toward the Bullard:

https://www.youtube.com/watch?v=ZA_e7AjL7iE

[siren fan]

Wow that is really cool!