According to its long-range plan, the WSDOT Rail Office plans eventual service of 13 daily round trips between Seattle and Portland and 4–6 round trips between Seattle and Bellingham, with four of those extending to Vancouver, BC. Amtrak Cascades travels along the entirety of the proposed Pacific Northwest High Speed Rail Corridor; the incremental improvements are designed to result in eventual higher-speed service. According to WSDOT, the "hundreds of curves" in the current route and "the cost of acquiring land and constructing a brand new route" make upgrades so cost-prohibitive that, at most, speeds of 110 mph (177 km/h) can be achieved.