Tag Archives: transportation

Bridges of Pittsburgh – never the same bridge twice

9 Nov

This is a fun CMU affiliated project that attempts to “discover how many of Pittsburgh’s 446 bridges can be traversed without crossing the same bridge twice.”

From the organizers:

In 1736, mathematician Leonard Euler proved it was impossible to walk through the German city of Königsberg crossing each of the city’s seven bridges exactly once. His work, famously dubbed the “Bridges of Königsberg” problem, laid the foundation for graph theory and network analysis, and foreshadowed the invention of topology. We intend to create an expanded, more complex version of this famous study using Pittsburgh’s 446 bridges (Regan 2006).

Check it out here.

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The Major Street System, 1941 Master Plan

11 Oct

Click to make BIG

From Pittsburgh City Archives, a good twitter follow.

U.S. Aviation and Highway Noise Map

31 Aug

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Pretty fascinating map of a different kind of pollution: noise. This shows the relative decibels surrounding airports and highways. Yellow to red to blue gets louder and louder.

See the whole map of the entire United States here.

Basically, only Maine looks cool.

Port Authority System Wide Map, Summer 2018

31 Aug

Finally.

Port Authority releases a system wide map.

View it here.

I really got nothing more to say, other than finally.

Also coming soon: real time data, that may or may not be better than Transit App.

1897: Press Popular Bicycle Route no. 8 – Pleasant Century Run

30 Aug

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During the bike boom of the late 1800s, the Pittsburgh Press apparently published some recommended bicycle routes and maps to get people riding these new velocipedes. This one is a century ride from Pittsburgh to New Castle along the Ohio River.

Looking forward tracking down the other “Popular Bicycle Routes” of the 1800s.

Trolley lines that survived to the end of 1957

28 Aug

Someone made a Google Map of every trolley line in the US that survived to the end of 1957.

Here’s a screencap of Pittsburgh.

In 1956, the Pa. General Assembly consolidated the companies by creating the Port Authority of Allegheny County, which transitioned from streetcars to buses, mainly to save money in operations and maintenance, per WESA.

See the full map here.

Once there, you can click on a line for more info and abandonment dates.

Then you can cry.

A 1978 Allegheny County 171-Mile bicycle network that never happened

18 Jul

171 miles of bikeway that never happened, 1978. Click to make BIG.

So it looks there was once a plan to connect large swaths of Allegheny County with a connected 171-mile bikeway network, linking 25 communities. The bikeways went through the City and connected to the major County Parks of South Park, North Park, and Boyce Park. The County was ready to spend $5.6M on the network. The plan even called for “coin-operated bike locks stationed periodically along the route or lockers where commuters could stash their bicycles, then walk to work.”

According to the article, “it would be possible to commute to work, pedal to three corners of the County, or visit major parks along safe, well-marked lighted bikeways.” At the time, the project manager, David O’Loughlin claimed that there were 650,000 bicyclists in Allegheny County.

To repeat, there was once a plan to for 171 miles of bikeways for Allegheny County. They were ready to install it for $5.6M.

Does anyone know what the hell happened?

Click here for the October 4, 1978 Pittsburgh Press article.

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