Rosslyn slugline arlington va5/31/2023 ![]() And once that demand outstrips Metro’s ability to provide supply, Metro won’t be able to do anything (because the Yellow shares with the Green). With just a separated Blue, there would still be demand for a direct trip across the 14th Street Bridge. The problem is that Metro is bumping up against the absolute capacity of both subways. Right now, the Blue and Orange must be balanced based on ridership demand, as do the Green and Yellow. With the lines no longer sharing with each other, delays wouldn’t cascade across multiple lines if a train were to break down or some other mishap were to occur.īut the real issue is being able to have the flexibility to balance trains across the different lines. This would also have the advantage of reducing the amount of interlining in the system. In addition to the 26 trains per hour (TPH) running between Rosslyn and Downtown on the Orange/Silver subway, an a separated Blue Line to Georgetown and into downtown would allow 12-16 additional trains to cross the Potomac at Rosslyn. A likely path would take the line under the river to Georgetown and then east into the downtown core. That solution might work for a few years, but if Metro ridership continues to grow, the Rosslyn terminal would need to become the first phase of a new Potomac crossing.Ī separated Blue Line: Metro could easily expand a Rosslyn Terminal into a new line to DC. But it also means that all Blue Line riders going to DC would need to transfer at Rosslyn or Pentagon. This would allow more Orange and Silver trains from Tysons and the Rosslyn-Ballston corridor. The Rosslyn terminal would enable Blue Line trains to terminate at Rosslyn without interfering with the Orange or Silver Lines. Post-2025 solutions with a Rosslyn terminal But in the long run, Metro needs more capacity over the Potomac River. Metro could relieve the pressure for now by either building a new terminal for the Blue Line at Rosslyn, or a “wye” to let some trains from Tysons go to Arlington Cemetery and farther south in Virginia. Three lines vie for space in one tunnel from Rosslyn eastward, which limits trains on the Blue, Orange, and Silver Lines. Today, Rosslyn is the biggest bottleneck in the system, which will only get worse when the Silver Line opens. ![]() Today we’ll look at how a terminal for the Blue Line could fit into the picture. Yesterday, we discussed how Metro could grow its core capacity if it chooses to build a Rosslyn wye in the short run.
0 Comments
Leave a Reply. |