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 sustainablity, reliablity 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.
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2022 Tunnel Watch List
| TUNNEL | LOCATION | TYPE |
| Banks Lake Pumped Storage Project | Grand Coolee, WA | Energy |
| Connector Conveyance Tunnel, Ph IIIC | Providence, RI | Wastewater |
| Continental Rail Gateway (Detroit-Windsor Tunnel) | Detroit, MI | Railroad |
| CSO Control Parallel Interceptor | Newark, NJ | Wastewater |
| Delta Conveyance | Sacramento, CA | Water |
| Gateway Tunnel Project | NY/NJ | Transit |
| Gordon Butte Pumped Storage Hydro Project | Martinsdale, MT | Energy |
| Harlem River Drive Ramp | New York, NY | Highway |
| Horizontal Lateral Project | Las Vegas, NV | Water |
| Houston Flood Control Tunnels | Houston, TX | Wastewater |
| LA Westside Purple Line Extension - Phase 4 | Los Angeles, CA | Transit |
| Lowell Creek Flood Diversion | Seward, AK | Water |
| Ontario Int'l Airport and Cucamonga Station Tunnel | San Bernardino, CA | Transit |
| Red Line Blue Line Connector | Boston, MA | Transit |
| Sepulveda Pass | Los Angeles, CA | Transit |
| Silver Line Extension | Boston, MA | Transit |
| Steel Bridge Replacement Tunnel (Tri-met Tunnel) | Portland, OR | Transit |
| US 64 Corridor K Tunnel | Polk County, TN | Highway |
| Vermont Transit Corridor | Los Angeles, CA | Transit |
| West Seattle Project | Seattle, WA | Transit |
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
Erica Moonin, Moonin and Associates
Mike Rispin, Strata Worldwide
Michael Roach, Traylor Bros. Inc.
Jim Rush, Benjamin Media
Grover Vargas, Sika Corp.
Michael Vitale, Mott MacDonald
