Fixing the Flood of Congestion at its Source

In pursuit of an honest conversation about congestion, Charles Marohn produces a comparison between roads and stormwater infrastructure.

2 minute read

October 20, 2015, 2:00 PM PDT

By James Brasuell @CasualBrasuell


Charles Marohn takes inspiration from U.S. Senator Chris Murphy (D-Connecticut), who shared his thoughts about commuting via Twitter and a live streaming event last week.

Looking for solutions to congestion, Senator Murphy produced the following, via Twitter: "We're running our transportation system on the same amt of money as 1993. That's not going to help us with the big projects we need #FedUp."

Marohn provides a critical response of that take, which he says is straight from the Infrastructure Cult's talking point memo. Marohn counters: "Federal gas tax receipts in 1993 were $19.6 billion. By 2013, that had climbed to $29.2 billion. To this, Congress annually adds billions more. Sure, the gas tax has not been increased since 1993, but let's not pretend that is the fundamental cause of our transportation woes or -- more importantly – that what we 'need' is more 'big projects.'"

Then Marohn shifts to a description of the common stormwater system, which collects rainwater into larger and larger streams. Planners and engineers have solved the problem of the flooding often produced by such a system by addressing the flow of rainwater at the source: "We don't allow people to fill their wetlands. We require developers to retain their runoff on site. We build retention systems to hold back runoff and feed stormwater into the natural systems more slowly so flooding does not occur. We take these steps and others at the source to mitigate the cumulative, negative impacts of stormwater runoff. Namely: flooding."

The description of stormwater systems is thus compared to the road system, but in this case, planners and engineers have yet to address the source of the problem in finding solutions for congestion:

"For automobile flooding (congestion), the only way to deal with it and still have a successful economy is to address it at the source. We need to absorb those trips locally before they become a flood. Instead of building lanes, we need to be building corner stores. We need local economic ecosystems that create jobs, opportunity and destinations for people as an alternative to those they can only get to by driving."

Monday, October 19, 2015 in Strong Towns

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

November 11, 2026 - Zachary Whalen

A road in north eastern Nebraska with power lines on either side, and grassy fields.

Eastern Nebraska is running out of electricity

Data centers and electrification are straining eastern Nebraska’s grid, throttling economic development.

November 6, 2026 - Grist

People walking in downtown St. Louis, walking past shops.

Move over, LA: St. Louis gears up for Olympics, invests millions in downtown redevelopment

The Missouri city will host the 2028 Olympic soccer group stage and knockout matches.

November 1, 2026 - Smart Cities Dive

Construction in Dallas. An aerial shot of a wooden frame of an apartment building.

Dallas releases zoning code overhaul to officials

The drafted overhaul is over 400 pages long.

November 11 - Dallas Morning News

Canal street, where pedestrians are packed shoulder to shoulder.

NYC renovations for dangerous, ‘mercilessly crammed’ street delayed until 2027

Construction was supposed to begin this fall.

November 11 - Gothamist

A rendering of Midway Rising that shows people mingling in a green space between apartment buildings.

San Diego’s Midway Rising project gets greenlight from city council

The project looks to become the largest affordable housing development in California's history.

November 11 - KPBS

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.