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Originally Posted by eschaton
First, people often choose their living space based upon a short commute. This is probably more true for apartments than houses, as an apartment is almost always a short-term commitment. In contrast, people much less frequently have the ability to choose a job based upon having a short commute. Indeed, in many cases when a new office opens up, it is not a startup or a new branch, but a relocation within a metro area - which will obviously bring people with it who work all across the region.
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I think we need to view this very long term--the development pattern in East Liberty will likely last for many decades, and in that time there will be more than enough cycling of East Liberty workers to allow people to move to places with convenient access to East Liberty.
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Related to this, while East Liberty is a convenient location (especially via transit) for a large proportion of the East End, it is not for other parts of the metro - or even the city. Utilizing the transit system in these cases would often require a transfer in Downtown, which is enough of a hassle in terms of timing that few people who have cars would choose to ride rather than drive. Hence the transit utilization of any East Liberty office building will be by definition lower than in Downtown or Oakland.
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So first, I am actually not at all sure that transit access is better to Oakland specifically, versus Downtown. Oakland as yet has no actual rapid transit link, and is therefore a pain to get to from much of the transit footprint. [Edit: by the way, it is not just parts of the East End of the City that has better transit access to East Liberty--it is a big portion of the overall transit system extending out into the suburbs.]
Second, I think this argument proves too much. No doubt Downtown is the best single place for transit access in the metro area, but not every single new office unit to come over the next couple decades can be located in Downtown--there is not enough vacant land, and Downtown would be too expensive anyway for many possible employers. So, there will in fact be lots of new office space being built outside of Downtown in coming years.
And once you start thinking about locations other than Downtown to build new office space, then Downtown East Liberty starts looking as good or better than most possible locations from a transit perspective.
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Since a significant portion of people will drive to work anyway, putting it immediately adjacent to a busway station will lead to less transit utilization than if an apartment was placed on the same parcel.
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Undoubtedly some of the people living in East Liberty apartments are also going to drive to work rather than take transit.
Generally, I'm really not at all sure you can guarantee more apartments will always mean more transit use than more office, given that there are in fact a lot of people who would save a lot of time and/or money if they could use transit to access a job in East Liberty versus many other locations. And again, I would suggest you also have to factor in walking and biking commutes--which some of the East Liberty apartment dwellers could have if there were more office space in East Liberty.
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The bottom line is cities with polycentric job patterns are generally bad for transit planning.
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That seems inaccurate to me. The highest transit usage in the United States by far is in the NYC/NJ area, and there are many, many different job centers within that area, with the major ones typically having their own transit nodes. Next I believe is the Bay Area--same deal. A close third would be the DC area--same deal again.
And I think we need to keep in mind that ultimately, the East End of Pittsburgh is a small place. East Liberty in particular is only about 4 miles from Downtown--that is about the distance between the Financial District and Midtown in Manhattan.
So the idea there would be secondary jobs clusters around transit nodes that sort of distance from the main CBD is not at all innovative--that is how in fact the vast majority of cities with robust transit systems work.