UCA Tunnel Watch List

The UCA Tunnel Watch List spotlights the most important tunneling and underground construction projects in the United States, illustrating the positive impact these projects bring the public. Tunnels bring remarkable benefits to infrastructure projects, including sustainability, reliability and safety.


These 20 projects include well-known multi-billion dollar transportation projects that will eventually carry millions of people underground, as well as combined overflow sewage projects that very few people will ever see in the inside of.


2023 Tunnel Watch List

Gateway Tunnel Project NY/NJ Transit
US 64 Corridor K Tunnel Polk County, TN Highway
Delta Conveyance Sacramento, CA Water
Sepulveda Pass Los Angeles, CA Transit
Eastside Transit Corridor - Phase 2 Los Angeles, CA Transit
Silver Line Extension Boston, MA Transit
Austin Connect Project - Public Transit Downtown Tunnel Austin, TX Transit
West Santa Ana Branch Transit Corridor - Phase 2 Los Angeles, CA Transit
Red Line Blue Line Connector Boston, MA Transit
Ontario Int'l Airport and Cucamonga Station Tunnel San Bernardino, CA Transit
Horizontal Lateral Project Las Vegas, NV Water
White Pine Pump Storage Hydropower Project Ely, NY Energy
CSO Control Parallel Interceptor Newark, NJ Wastewater
California High Speed Rail Los Angeles, CA - San
Fransisco, CA
Lowell Creek Flood Diversion Seward, AK Water
Ballard Extension Seattle, WA Transit
West Seattle Extension Seattle, WA Transit
Steel Bridge Replacement Tunnel (Tri-met Tunnel) Portland, OR Transit
Amtrak Hub - Redevelopment Chicago, IL Transit
Houston Flood Control Tunnels Houston, TX Wastewater

Selection Criteria

A number of factors were considered when selecting projects for the Tunnel Watch List including the cumulative benefits of the project both regionally and nationally with an emphasis on societal and environmental benefits and not just economic benefits. Geography was a factor as well as the need to help promote projects that may need funding or are particularly important to their local community, or any other reason to justify why the public needs to be aware of the need for this infrastructure.


Tunnel Watch List Selection Committee

Greg Hallet, Amalgamated Mining & Tunneling, Inc.
Greg Hauser, JCK Underground Inc.
Robert Goodfellow, Aldea Services Inc.
Mark Johnson, Jacobs
Erika Moonin, Moonin and Associates
Mike Rispin, Strata Worldwide
Michael Roach, Traylor Bros. Inc.
Jim Rush, Benjamin Media 
Grover Vargas, Strata Worldwide
Michael Vitale, Mott MacDonald