New Database Quantifies the Costs of Transit Construction in the United States

The Eno Center for Transportation launched the first institutional investigation of the cost of transit projects earlier this year and recently released its initial findings, with promises for more in-depth case studies to come.

1 minute read

December 15, 2020, 7:00 AM PST

By James Brasuell @CasualBrasuell


Purple Line Extension Construction

Tunneling costs extra if you're a U.S. transit agency, according to the Eno Center for Transportation's new transit capital construction database. | Walter Cicchetti / Shutterstock

The Eno Center for Transportation released the first product of an initiative launched in late 2019 to study the high cost of public transit projects in the United States, building on the momentum of new public and media attention to the problems of transit construction.

The initial public offering is a database of transit capital construction projects, including "construction cost and timeline data for a total of 171 domestic and international rail transit projects completed over the past 20 years," according to an article on the Eno website that shares insights into the database. "For each project, factors such as number of stations, grade alignment, station spacing, and mode allow for deeper comparisons."

The article lists five key takeaways from the new database:

  • Light rail is not necessarily cheaper than heavy rail. Grade alignment, rather than mode, is the major determinant of cost.
  • Many rail projects in the United States are relatively inexpensive
  • The United States pays a premium for tunneled projects
  • Cost variability increases significantly for tunneled projects
  • Stations are expensive, but international projects include more of them

More details for each of those takeaways are included in the source article, as well as promises for further research.

Monday, December 14, 2020 in Eno Center for Transportation

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

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

June 4, 2025 - Diana Ionescu

Metrorail train pulling into newly opened subterranean station in Washington, D.C. with crowd on platform taking photos.

Congressman Proposes Bill to Rename DC Metro “Trump Train”

The Make Autorail Great Again Act would withhold federal funding to the system until the Washington Metropolitan Area Transit Authority (WMATA), rebrands as the Washington Metropolitan Authority for Greater Access (WMAGA).

June 2, 2025 - The Hill

White and yellow DART light rail train in Dallas, Texas with brick building in background.

DARTSpace Platform Streamlines Dallas TOD Application Process

The Dallas transit agency hopes a shorter permitting timeline will boost transit-oriented development around rail stations.

May 28, 2025 - Mass Transit

Sun rising over downtown Los Angeles with tall palm trees visible in foreground. Image is bright orange-red indicating extreme heat.

LA County Creating Action Plan to Tackle Extreme Heat

Los Angeles County is creating a Heat Action Plan to help communities stay safe during extreme heat, with steps like adding more shade, improving buildings, and supporting the neighborhoods most at risk.

June 9 - Los Angeles County Chief Sustainability Office

Small silver car driving over wide soeed cushion on asphalt road.

Maryland Plans Quick-Build Complete Streets Projects

The state will use low-cost interventions to improve road safety in five Maryland counties.

June 9 - Fox Baltimore

Nighttime view of downtown Los Angeles through arches of new 6th Street Viaduct.

Downtown Los Angeles Gears Up for Growth

A new report highlights Downtown L.A.’s ongoing revival through major housing projects, adaptive reuse, hospitality growth, and preparations for global events in the years ahead.

June 9 - Los Angeles Downtown News

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.