Support for
has been provided by these organizations and individuals:

John Hennessy III,

Posts Tagged ‘New York City’

New York City: Invest in MTA Green Bonds

Monday, April 25th, 2016
New York City: Invest in MTA Green Bonds

Investors can now help the MTA system grow with MTA Green Bonds!

View this complete post...

RPA Assembly 2016: Join the Discussion to Ensure a Thriving NYC Metro Region

Monday, April 18th, 2016
Screen Shot 2016-04-18 at 11.04.00

Join the Regional Plan Association on May 6 for RPA’s Assembly, a day of engaging discussion about the best ways to address issues including the crisis of affordability, threats to our coastlines, deteriorating infrastructure and pressures on our quality of life.

View this complete post...

Greening Harlem

Tuesday, April 5th, 2016
New Harlem Lane Redesign Concept

Harlem, NY is a neighborhood that has many opportunities: it is vibrant, historic, rich in art and culture, and located in the nation’s financial and cultural capital. At the same time, poverty, unemployment, displacement, and a lack of green space are all challenges that need to be met.

View this complete post...

Streetfilms: Five Fabulous Questions for Streetfight’s Janette Sadik-Khan

Wednesday, March 23rd, 2016
Streetfilms: Five Fabulous Questions for Streetfight’s Janette Sadik-Khan

Just as former New York City Transportation Commissioner Janette Sadik-Khan launched her multi-city book tour for “Streetfight” (along with co-author Seth Solomonow) we were able to grab her for a few minutes in the pedestrian paradise of Washington Square Park to ask her what we thought were five eclectic questions.

View this complete post...

New York City: Chris Sickels and The Blowing Bowler

Wednesday, March 16th, 2016
New York City: Chris Sickels and The Blowing Bowler

Illustrator Chris Sickels talks about “The Blowing Bowler”, a stop-motion animation video, now screening at the Fulton Center. The animation depicts a brief history of New York City’s subway car designs as a man pursues his wind-tossed bowler hat in a subway station. –mtainfo on YouTube

View this complete post...

Worldwide Lessons: What NYC Can Learn From 5 Peer Cities

Friday, March 11th, 2016
Fig. 1 Change in Building Emissions per Capita

URBAN GREEN COUNCIL Introduction Frankfurt and other German cities are renowned for their commitment to quality construction and engineering. London is filled with historic and diverse buildings. Singapore is famous for its direct regulation of behavior. Sydney and the rest of Australia attempted to put a price on carbon. San Francisco is a legislative testing […]

View this complete post...

Lost in Transportation

Tuesday, March 8th, 2016
Fig. 1. Fastest and simplest paths in primal and dual networks. (A) In the primal network of the New York City (NYC) metropolitan system, a simplest path (light blue) from 125th Street on line 5 (dark green) to 121st Street on line J (brown) differs significantly from a fastest path (gray). There is only one connection for the above simplest path (Brooklyn Bridge–City Hall/Chambers Street) in Lower Manhattan. In contrast, the above fastest path needs three connections (5→F→E→J). We compute the duration of this path using travel times from the Metropolitan Transportation Authority (MTA) Data Feeds (see Materials and Methods). We neglect walking and waiting times. (B) In the dual space, nodes represent routes [where ACE, BDFM, and NQR are service names (49)], and edges represent connections. A “simplest path” in the primal space is defined as a shortest path with the minimal number of edges in the dual space (light-blue arrow). It has a length of C = 1 and occurs along the direct connection between line 5 (dark-green node) and line J (brown node). The above fastest path in the primal space has a length of C = 3 (gray arrows) in the dual space, as one has to change lines three times. [We extracted the schematic of the NYC metropolitan system from a map that is publicly available on Wikimedia Commons (45).]

Cities and their transportation systems become increasingly complex and multimodal as they grow, and it is natural to wonder whether it is possible to quantitatively characterize our difficulty navigating in them and whether such navigation exceeds our cognitive limits. A transition between different search strategies for navigating in metropolitan maps has been observed for large, complex metropolitan networks. This evidence suggests the existence of a limit associated with cognitive overload and caused by a large amount of information that needs to be processed. In this light, we analyzed the world’s 15 largest metropolitan networks and estimated the information limit for determining a trip in a transportation system to be on the order of 8 bits.

View this complete post...

New York City: Reimagining Underutilized Building Stock and Infrastructure

Thursday, February 18th, 2016
New York City: Reimagining Underutilized Building Stock and Infrastructure

A student summarizes her paper entitled “Reimagining New York City’s Underutilized Building Stock.”

View this complete post...

New York City: Jonas Blizzard 2016 Timelapse

Wednesday, January 27th, 2016
New York City: Jonas Blizzard 2016 Timelapse

We set out to cover New York City’s 2nd biggest snowstorm since 1869. Central Park total snow accumulation at the end of the winter storm was 26.8 inches.

View this complete post...

For-Hire Vehicle Transportation Study

Tuesday, January 19th, 2016
Annual paid trips by mode

New York City is committed to offering a reliable, safe, accessible, and comprehensive transportation system that promotes the public good and meets the needs of all New Yorkers across all five boroughs. The City must make sure that residents and visitors have a range of appealing transportation options, that the streets are safe, that passengers are protected from fraud and abuse, and that those who work to provide transportation have fair and sustainable working conditions and income opportunities. While doing so, the City must take steps to ensure that its transportation system is accessible to all, regardless of individual ability.

View this complete post...

Receive Infra Update, our email newsletter.

Follow InfraUSA on Twitter Facebook YouTube Flickr
Show us your infra! Show us your infra!

Video, stills and tales. Share images of the Infra in your community that demands attention. Post your ideas about national Infra issues. Go ahead. Show Us Your Infra!  Upload and instantly share your message.

Polls Polls

Is the administration moving fast enough on Infra issues? Are Americans prepared to pay more taxes for repairs? Should job creation be the guiding determination? Vote now!


What do the experts think? This is where the nation's public policy organizations, trade associations and think tanks weigh in with analysis on Infra issues. Tell them what you think.  Ask questions.  Share a different view.


The Infra Blog offers cutting edge perspective on a broad spectrum of Infra topics. Frequent updates and provocative posts highlight hot button topics -- essential ingredients of a national Infra dialogue.