AARoads Forum

Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: Aurora Bridge bus accident  (Read 2236 times)

Bruce

  • *
  • Offline Offline

  • Posts: 1624
  • Transit Commuter

  • Age: 21
  • Location: Snohomish County, WA
  • Last Login: Today at 01:28:33 PM
    • Wikipedia
Aurora Bridge bus accident
« on: September 24, 2015, 08:00:57 PM »

As you may know, there was a collision between a "Ride the Ducks" amphibious tour vehicle and a charter bus on the Aurora Bridge today. 4 dead, several critical injuries and a real tragedy all around.

The accident has sparked some talk of fixing the Aurora Bridge, which has very narrow lanes and no median barrier.

The best suggestion I've seen so far is to reduce the lanes to 5 and slightly widen the existing lanes as well as installing a barrier, leaving an extra lane on the side for exit lanes approaching each end of the bridge.

Bruce

  • *
  • Offline Offline

  • Posts: 1624
  • Transit Commuter

  • Age: 21
  • Location: Snohomish County, WA
  • Last Login: Today at 01:28:33 PM
    • Wikipedia
Re: Aurora Bridge bus accident
« Reply #1 on: September 24, 2015, 09:06:33 PM »

« Last Edit: September 24, 2015, 09:15:24 PM by Bruce »
Logged

kkt

  • *
  • Offline Offline

  • Posts: 4507
  • Location: Seattle, Washington
  • Last Login: September 19, 2018, 06:02:51 PM
Re: Aurora Bridge bus accident
« Reply #3 on: September 25, 2015, 07:20:23 PM »

NTSB will investigate.  That's good, we'll get a better investigation than emerges from the liability suits.
Logged

Big John

  • *
  • Online Online

  • Posts: 1613
  • Age: 51
  • Last Login: Today at 07:50:22 PM
Re: Aurora Bridge bus accident
« Reply #5 on: September 26, 2015, 04:39:25 PM »

And AASHTO has 9' as the minimum allowable lane width.
Logged

kkt

  • *
  • Offline Offline

  • Posts: 4507
  • Location: Seattle, Washington
  • Last Login: September 19, 2018, 06:02:51 PM
Re: Aurora Bridge bus accident
« Reply #6 on: September 26, 2015, 08:17:02 PM »

I'm confused about the geometry.  The Seattle Times says the lanes from curb to center are 10 feet, 9 feet, and 9 1/2 feet, and reversed the other direction.  But wikipedia says the bridge overall is 70 feet wide.  Are the walkways more than 5 feet each side?

I'm also surprised all the lanes weren't built 10 feet wide, that was typical for major bridges on US routes in the early 1930s.
Logged

jakeroot

  • *
  • Offline Offline

  • Posts: 8217
  • U/Wash - Urban Design

  • Age: 22
  • Location: WA BC DC
  • Last Login: Today at 05:24:07 PM
Re: Aurora Bridge bus accident
« Reply #7 on: September 26, 2015, 08:40:25 PM »

Nope. Nope. 9 foot lanes you can go about 35-40 mph, and that's pushing it. 10 foot lanes get you about 50-55 mph.
And AASHTO has 9' as the minimum allowable lane width.

People go about 50-55 over this bridge (people in Seattle actually drive really fast). But nonetheless, I understand both your points (particularly Big Johns) and I concede that my idea may not be so well thought out.

I'm confused about the geometry.  The Seattle Times says the lanes from curb to center are 10 feet, 9 feet, and 9 1/2 feet, and reversed the other direction.  But wikipedia says the bridge overall is 70 feet wide.  Are the walkways more than 5 feet each side?

That '70' number might be including the railings and suice
Logged

 


Opinions expressed here on belong solely to the poster and do not represent or reflect the opinions or beliefs of AARoads, its creators and/or associates.