Exploring the Feasibility and Challenges of Underground Passenger Train Lines Under the Columbia River
Recently, there have been discussions about the potential for constructing underground passenger train lines under the Columbia River to connect between Vancouver, Washington, and Portland, Oregon. While the idea is intriguing, several factors pose significant challenges to its realization. This article explores the feasibility of this project, the current status, and the obstacles that must be overcome.
Current Status and Projections
The likelihood of constructing a tunnel under the Columbia River is considered remote. The existing interstate bridge needs to be replaced, as it is not earthquake-resistant. Additionally, Oregon and Washington are yet to agree on the funding and responsibility for the project. The most pressing issue is the light rail connection between Portland and Vancouver, which has been a long-standing wish in the region. However, the current political climate makes this project quite embarrassing, as Portland is hesitant to support it while Vancouver sees it as necessary.
Recently, funds have been allocated by both state and federal governments to begin the study and design of the I-5 bridge, the replacement for the existing interstate bridge. While multiple proposals were made to consider a tunnel, the current plan seems to favor the construction of a bridge.
Cost and Funding Concerns
The cost of constructing an underground tunnel is formidable. Finding federal money, private investors, and insurance willing to take on such a large-scale project in downtown Portland is challenging. While federal funds may be available, securing the necessary capital for a project of this scope is difficult due to political and economic complexities.
The current financial situation is precarious. Portland is struggling to keep basic infrastructure, like windows and doors, operational, making the concept of a massive construction project even more daunting. The project would likely require substantial federal and state support to move forward, but securing these funds is non-trivial, given the current financial environment.
Technical and Environmental Challenges
The topography of the region poses significant challenges for tunnel construction. The unstable coastline is prone to collapse during heavy rain, adding further complexity to the project. The cost of constructing and maintaining such a tunnel would make it prohibitive for many stakeholders.
Instead of tunnels, there have been suggestions to update the existing tracks to express train usage only, rather than leasing them from the BNSF freight companies. This would be a more cost-effective approach but still faces challenges in implementation.
Progress in Related Projects
In Seattle, progress is being made with the extension of light rail services to three counties, marking a significant improvement. SkyTrain and TriMet, the regional light rail systems, are also expanding their networks, providing further evidence that public transportation is a growing concern in the region.
The ongoing discussions around the Columbia River tunnel highlight the complex interplay between political, economic, and technical factors that must be navigated for such ambitious projects. While the idea remains captivating, the path forward remains uncertain and fraught with obstacles.
Conclusion
While the idea of an underground passenger train line under the Columbia River captures the imagination, the current political, technical, and financial obstacles make its realization a distant prospect. However, the discussions surrounding this project may yet lead to more practical solutions that provide the region with the transportation improvements it desperately needs.