architecture

Visiting the 9/11 Memorial in New York

My trip to New York included a visit to the to 9/11 Memorial. As stated on the website, the memorial is “A national tribute of remembrance and honor to the men, women and children killed in the terror attacks of September 11, 2001 and February 26, 1993.” At its most essential level, it is a space rooted in tragedy and loss and remembrance. But it also is a positive space, in harmony with the modern urban landscape, the changes happening as the area is rebuilt, and a prototype for ways to think about public urban spaces for the future.

The memorial is located on the World Trade Center complex, and occupies a large portion of the original site. It is anchored by two large square waterfalls and reflecting pools, each approximately the size and location of the footprints of the original twin towers.

In this photo, one can see how the pools are situated with respect to the other architectural features of the landscape. Behind this pool on the footprint of the original south tower are (from left to right), the existing buildings from the World Financial Center in Battery Park City, the new One World Trade Center building still under construction, and the September 11 Museum (also still under construction).

At the center of each reflecting pool is a dark square hole whose bottom cannot be seen from the sides and into which water from the pool falls.

The trees visible in the above photo are swamp oaks, and form an important part of the memorial. Although orange and rather spare in late November, they form a green canopy that will shade much of the space during the spring and summer and add a sense of life to the space. They are also an integral part of the green design, with the shade helping to reduce stress and energy on the underground parts of the complex (including the major transit hub at the site). Conversely, the paved walkways are designed in such a way as to support the trees and not put undue stress on them or their roots (visit the website for more detail on how that works).

The sides of pools are lined with bronze onto which are inscribed the names of all the people who died in the attacks on September 11, 2001, as well as the six people who died in an earlier attack on the World Trade Center in 1993.

It is somewhat reminiscent of the names on the Vietnam Memorial in Washington, DC, and indeed I did see some people making rubbings of particular names.

The architecture of the pools, with the concentric squares and footprints, grounds the memorial in the architecture of the original site. The museum facade also takes on elements from the long lines of glass and steel structure of the original towers. Even the cascading water into the pools seems to have been designed to reflect the original architecture. The pattern of the water as it cascades over the edge strongly reminds me of the two-story lobbies of the original towers.

Visits to the memorial is still very controlled, and one has to book passes for a particular date and time well in advance. But we were able to get a good time during what is presumably a busy week. I am glad I had a chance to visit at this time, with the overall site still in progress. I would like to see it again in the future as the buildings and the museum move forward.

Fun with Highways: The Bay Bridge Turns 75

This past Saturday, November 12, marked the 75th anniversary of the opening of the San Francisco – Oakland Bay Bridge, known conventionally as “The Bay Bridge.” It is a regular part of life for many of us here, one of our main connections to the communities across the bay and a principal landmark during walks in my part of the city. It has been featured in many previous articles here on CatSynth.

The Bay Bridge is a workhorse, spanning over 4 miles and carrying an estimated 270,000 vehicles a day, making it second busiest in the U.S. after the George Washington Bridge in New York. But the western double-span is quite a beautiful structure, both as seen from the hills of San Francisco and from up close.


[Click to enlarge]

[Click to enlarge.]

Don’t let that last photograph fool you. Even though it may look like it was taken 75 years ago, it was actually taken yesterday using the iPhone Hipstamatic app during an early afternoon walk by the bridge.

It was quite an engineering feat when it was built, the longest bridge of its time and built in challenging geography of the bay.

[Image from Wikimedia Commons.]

This video (as seen on the official Bay Bridge info site) captures both the era and the engineering:

Much like the Brooklyn bridge when it was first built, the Bay Bridge towered over the surrounding architecture of the cities it connected. It is anchored in the middle to Yerba Buena island with tunnels connecting the two spans of the bridges. On the the San Francisco side, it is anchored to Rincon Hill, once an upscale neighborhood in the late 1800s that fell into rapid decline and largely destroyed in the 1906 quake. The eastern bridge was built resting on mud rather than bedrock. It was the most expensive bridge built to date.

The idea of a bridge crossing the bay has been around since the 1800s. Indeed, such a bridge was proposed by Emperor Norton in the 1870s (I think this even made it into Gino Robair’s opera I Norton). But unlike his other proclamations, this one seemed like a good idea. After that, there were many proposals, such as this one that in some ways resembles the bridge that was actually built.

The bridge proposed in this drawing connected to Telegraph Hill rather than Rincon Hill, and has suspension bridges on both sides of Yerba Buena island.  The spires also make it look like some of the older suspension bridges on the East River in New York.

When bridge first opened, it carried US Highways 40 and 50 as well as the trains from the Key System in the East Bay. The upper deck had longer ramps leading to Harrison and Bryant Streets at 5th, roughly the same as the rather long ramps at those streets today. On the Oakland side, the bridge had viaducts from Cypress Street (Highway 17) as well as San Pablo Avenue and the Eastshore Highway (US 40). The bridge now carries Interstate 80 across the bay. The railway is long gone. Gone also are the connections to the old Transbay Terminal and Embarcadero Freeway, both of which have been demolished. The area under the bridge on the San Francisco side, once a gritty industrial waterfront, is now a picturesque boulevard that is great for walking. Through all of the changes, the bridge itself has not changed very much at all…

[Bay Bridge approach, 1940s]

[Bay Bridge and Embarcadero, 1970s and 1980s. Photos from Wikimedia Commons.]

[Present day, Bay Bridge and southern Embarcadero. Photo by CatSynth]

…until now. The eastern truss span, which was badly damaged in the 1989 earthquake, is now being replaced with a new more graceful cable-stayed span. The construction has progressed to the point where the tower is in place and the cables are being hung. It is indeed a bit distracting when traveling the bridge. But I am looking forward to seeing it completed, probably around the 77th anniversary in 2013.