Construction of Marion Street Bridge in Salem, OR circa 1950's @ https://t.co/M1iTv8AhRP #ORhistory pic.twitter.com/0y5Ch3heoz
— OregonStateArchives (@OregonArchives) August 25, 2014
South Napa earthquake damage estimate could reach $1,000,000,000: http://t.co/qY7JMpSkNp pic.twitter.com/1ysWCxPDkIRemember earthquake ratings are on a log scale, so each integer, from 6 to 7, 7 to 8, and 8 to 9, represents a 10-fold increase in energy. From 6 to 9 is 10x10x10 = 1000 more energy!
— ABC News (@ABC) August 25, 2014
If earthquake prep is cited as a reason for a "third bridge," it's a lot cheaper to do a retrofit.
|A bare-bones seismic retrofit doesn't fit on the chart|
For the cost of three Wallace and Glen Creek widenings, we could reinforce both bridges.
Seriously, why is this even a debate?