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New York City's High Bridge to Reopen After More Than 40 Years

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The New York Times calls the High Bridge "the greatest public work in New York City’s history." Today that feat of 19th century engineering—the oldest existing bridge in the city—will reopen after more than 40 years of disuse.

When it first opened in 1848, the Bridge, which connected 173rd Street in the Bronx to 170th Street in Upper Manhattan, served as the final leg of a 40-mile journey south for clean water from upstate. The bridge was part of the Croton Aqueduct system designed by John Jervis. It relied on gravity and a carefully engineered track that dropped 13.25 inches every mile to transport usable water to Manhattan's upper stretches. From there, the water flowed into two reservoirs that made the 19th century expansion of the city possible.

In 1864, a pedestrian path was added to the beautiful 1,200-foot bridge, which stands 116 feet above the Harlem River and drew New Yorkers and tourists north for day trips and boat rides around what was then the country. When the the aqueduct was closed in 1958, the High Bridge remained opened under the jurisdiction of the city’s Parks Department. That lasted about a decade, until rising crime in neighborhoods on both sides of the bridge drove city officials to close it indefinitely.

About 20 years ago, 10-year-old Maaret Klaber gave a presentation to the local community board’s park committee requesting that the bike path along the Harlem shoreline be reopened. After editorials echoing her cry began appearing in papers around the city, a restoration project was launched. In the decades since, portions of the path have been cleared and reopened at various times. The High Bridge portion has been the most involved.

Three mayoral administrations (and $61.77 million) later, the project is complete, and the only exclusively pedestrian bridge connecting Manhattan to the mainland will open to the public today. To get a sense of what the walk will look like, check out this video shot back in 2009:

To find out more about visiting the High Bridge, click here.

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Courtesy Umbrellium
These LED Crosswalks Adapt to Whoever Is Crossing
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Courtesy Umbrellium

Crosswalks are an often-neglected part of urban design; they’re usually just white stripes on dark asphalt. But recently, they’re getting more exciting—and safer—makeovers. In the Netherlands, there is a glow-in-the-dark crosswalk. In western India, there is a 3D crosswalk. And now, in London, there’s an interactive LED crosswalk that changes its configuration based on the situation, as Fast Company reports.

Created by the London-based design studio Umbrellium, the Starling Crossing (short for the much more tongue-twisting STigmergic Adaptive Responsive LearnING Crossing) changes its layout, size, configuration, and other design factors based on who’s waiting to cross and where they’re going.

“The Starling Crossing is a pedestrian crossing, built on today’s technology, that puts people first, enabling them to cross safely the way they want to cross, rather than one that tells them they can only cross in one place or a fixed way,” the company writes. That means that the system—which relies on cameras and artificial intelligence to monitor both pedestrian and vehicle traffic—adapts based on road conditions and where it thinks a pedestrian is going to go.

Starling Crossing - overview from Umbrellium on Vimeo.

If a bike is coming down the street, for example, it will project a place for the cyclist to wait for the light in the crosswalk. If the person is veering left like they’re going to cross diagonally, it will move the light-up crosswalk that way. During rush hour, when there are more pedestrians trying to get across the street, it will widen to accommodate them. It can also detect wet or dark conditions, making the crosswalk path wider to give pedestrians more of a buffer zone. Though the neural network can calculate people’s trajectories and velocity, it can also trigger a pattern of warning lights to alert people that they’re about to walk right into an oncoming bike or other unexpected hazard.

All this is to say that the system adapts to the reality of the road and traffic patterns, rather than forcing pedestrians to stay within the confines of a crosswalk system that was designed for car traffic.

The prototype is currently installed on a TV studio set in London, not a real road, and it still has plenty of safety testing to go through before it will appear on a road near you. But hopefully this is the kind of road infrastructure we’ll soon be able to see out in the real world.

[h/t Fast Company]

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Tokyo Tops List of Safest Cities in the World, New Report Says
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When choosing a city to call home, some might weigh factors like affordability, potential for job growth, and even the number of bookstores and libraries. But for many aspiring urbanites, safety is a top concern. This list of the world’s safest cities from the Economist Intelligence Unit (EIU) proves you don’t need to trade your sense of welfare for the hustle and bustle of city life—especially if you're headed to Tokyo.

As Quartz reports, the EIU assessed the overall safety of 60 major cities using categories like health safety, infrastructure safety, personal safety, and the cybersecurity of smart city technology. With an overall score in 89.80 out of 100 points, Tokyo is the 2017 Safe Cities Index's highest-ranking city for the third year in a row.

While it was rated in the top five places for cybersecurity, health security, and personal security, Tokyo's No. 12 spot in the infrastructure security category kept it from receiving an even higher score. The next two spots on the EIU list also belong to East Asian cities, with Singapore snagging second place with a score of 89.64 and Osaka coming in third with 88.67. Toronto and Melbourne round out the top five. View more from the list below.

1. Tokyo
2. Singapore
3. Osaka
4. Toronto
5. Melbourne
6. Amsterdam
7. Sydney
8. Stockholm
9. Hong Kong
10. Zurich

You may have noticed that no U.S. cities broke into the top 10. The best-rated American metropolis is San Francisco, which came in 15th place with a score of 83.55. Meanwhile, New York, which used to hold the No. 10 slot, fell to No. 21 this year. The report blames the U.S.'s poor performance in part on America's aging infrastructure, which regularly receives failing grades from reports like these due to lack of maintenance and upgrades.

Surprised by your city's rank? For an idea of how other countries view the U.S. in terms of safety, check out this list of travel warnings to foreign visitors.

[h/t Quartz]


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