When you drive,
bike, or walk into different neighborhoods of cities you may sense
something like: I belong here or in some cases, what am I doing
here!? This episode discusses the human scale of neighborhoods in
Delft. Later, I'll then compare these improvements to what's been
established in Portland and remark on a opportunity area in Portland.
Delft
has deliberately been experimenting with human scale neighborhoods
since the 1980s. Designs have been made where only pedestrians and
bicyclists can traverse the area either by constraining the width of
the path or discouraging through traffic. In this case, the Dutch
have allowed pedestrian access all around the house by way of alleys
and paths.
Pedestrian Alleys and Ways:
The 1980 and 2000
developments had alleys behind residences which are also spaces used
by the residences to park their bikes.
The width of some
of these alleys are approximately 5 feet with walls all around, which
even makes cycling uncomfortable. These passageways are useful
because some housing blocks are approximately 100 feet long, which
provides a residence an opportunity to cut the extra walking distance
in half (on average).
Next, these
cut-throughs are often combined with pedestrian only bridges over the
canals, adding another level of connectivity.
Such a pretty back
yard eh!? I've learned everyone
wants to have a canal on their property, go figure! These canals also
add value to their property. Furthermore, these bridges are meant for
pedestrians only and prevent any possibility of vehicles entering.
Lastly, pedestrian bridges are less expensive than vehicular bridges.
So in this situation, the pedestrian bridge was a win-win.
Also
see below a more modern pedestrian bridge.
Note
the bridge has clearly indicated where the pedestrians and bicyclists
should be (Black color for pedestrians and red color for bicyclists).
So,
what does Portland do in these situations? We do have alleys in
Ladd's and in northeast Portland. But where else are there
opportunities?
The
biggest problem with Portland are the lack of large open lots of
developable land in the inner City. The Delft developments were
constructed in the
1960s+, whereas some Portland developments were erected in the early
1900s. So, we must be innovative, yes?
I
glance at NE Portland for opportunities to install alleys in the
vicinity of the Alberta Street business district... But
unfortunately, I doubt residences would allow a east-west alleyway
through their block. So, I think scaling back the improvement from a
pedestrian only improvement to an auto-light improvement could be
appropriate.
I
think SE Yamhill street between 34th
and 39th
could be an opportunity to lighten traffic. I'm thinking woonerf
style like the following picture.
One
key aspect of this street is the alternating through-way of the
street. You can see the parking on the left in the foreground and
parking on the right in the background. Vehicles must turn to
continue through the street. In the case of Yamhill, the
cross-section is much wider than on this street. The woonerf style
could be achieved by adding green space in the existing road to
create deliberate obstructions and thereby reduce speed.
Ideally,
the addition of obstructions would not eliminate parking spaces. If
need be, the existing parallel parking could be changed to
perpendicular parking to increase the number of parking spaces while
simultaneously creating obstructions to reduce speed.
I'm
sorry for the reader for taking quite a turn from the pedestrian
level environment to then suggesting woonerfs. However, I believe
there is difficulty with acquiring right of way for alleys in
existing neighborhoods. Lastly, visioning more auto-light streets may
help create the human scale developments such as depicted in Delft.
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