Emailed this to Maureen Sullivan, Project Director for the SR 520 bridge replacement project on 9/14. As of 9/21, no response yet...
Dear Ms Sullivan:
As you may be aware, the Sound Transit board has directed its staff to work with the DOT to perform additional analysis on noise-reducing pavement options for the R-8A lane expansion on I-90.
Based on the numerous improvements to the technology and process for incorporating quiet pavement (see links below) we feel many of the old boilerplate arguments against the technology have been resolved. As you'll read, field performance for rubberized pavement has been "very good" and numerous noise level studies in the U.S. and abroad prove use of rubberized asphalt "reduces traffic noise levels dramatically."
As Ron Sims has said" "It's incumbent upon us to look at new technology and materials," "All [the community] is asking for is for us to do this work."
This echoes what the residents within earshot (and soon to be the expanded earshot) of the bridge feel about the current situation for 520 expansion. The fact that quiet pavement isn't even under consideration seems illogical especially based on the property value degradation anticipated.
Since all the arguments in favor of the I-90 study apply to the 520 corridor, we are asking for the 520 EIS discipline reports to please incorporate the results of this sound transit research.
Please let us know how we can get these studies into the process.
Asphalt Rubber Makes a Quiet Comeback
Left for dead in the early ’90s, rubberized asphalt is getting
star billing today as a thin-lift, noise-dampening friction course.