
I’ve waited all day to discuss this. Basically, there are three arguments in this opinion piece:
1) No one uses transit here, so why bother spending money on it.
2) Trains across the I-90 bridge is dangerous. 3) Acquiring the center of the I-90 bridge for trains is not a good use of road-space, and may not be legal.
Few people use transit here because there is very poor transit here. The statistic “Transit ridership in Central Puget Sound amounts to less than 3 percent of the total daily travel” is not given in any context, so we do not know what counts as “daily travel.” Is it walking+biking+transit+driving? Does it count freight? How about airplanes and boats? Anyway, Metro buses have over 100 million rides per year, which is 58 for every resident of King county. Unless people average more than five trips per day, that number is more than 3 percent in King county. (Five trips per day would be 3.2% of travel done on transit, any fewer trips per person would increase that dramatically).
The argument here is sort of like before paved roads will built, saying “only 3 percent of daily travel is done with automobiles, why waste the money on the infrastructure? We need more horse paths!” The idea is that with better transit more people will ride it, and once a beginning infrastructure is built, more infrastructure will be added later. Transit makes cities more affordable to live in, because travel is enabled without a car. It makes them more environmental friendly, because of the above, but also because it enables higher density which reduces the number and distance of travel trips, which reduces fuel foot print. Transit also increase property values, and encourages tourism. There is a strong “network effect” on proper rail systems. To quote Calgary Transit: “Since the inception of LRT service, each new LRT line or LRT extension has produced a 15 to 20 percent increase in corridor ridership, resulting from the diversion of previous auto drivers to transit.”
If it is true that by 2030 only 4.5 of travel will be done with transit, I would say that is would have been a waste but, again, I don’t know where that stat came from, and if Ron Sims is talking about getting 50,000 commuters out of their cars by 2016, that would be mean trips in King County would be at least 6% transit by 2016 (50,000 people is 2.9% of the county’s population), even if people were making five trips a day. Anyway, even small reductions in volume reduce delays significantly for highways.

The second argument that putting trains across the I-90 bridge is dangerous I won’t argue with. I am sure Sound Transit won’t build anything knowing that it is not safe, and I trust their engineers more than pundits with an axe to grind.
The point that commandeering the center of the I-90 bridge is not a good use of road space is only obvious if you compare the number of trips across the bridge on the train and on the current center roadway. Any other comparison is apples-to-oranges. The argument that “The I-90 bridge would suffer a vehicle capacity loss of one-third compared with today” is pointless because we all know that the center HOV part does not actually carry one-third of traffic across the bridge! The vast majority goes in the other two lanes and the authors surely know that.
The piece asks:
Aside from the cost of converting the center corridor to light rail, one has to ask by what right would Sound Transit acquire this center corridor? This would constitute a “taking” of state highway property now belonging to all Washington taxpayers.
No, it wouldn’t. I-90 is an interstate and is thus owned by the federal government. The 18th Amendment (section 40) mentions money raised by special tax or levy, not money paid by the federal government. Thus this argument has no bearing. I don’t know the exact legality of acquiring this part of the bridge, but the 18th amendment has nothing to do with it. I will ask Sound Transit to respond to this today.
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