Greg Moore wrote:george matthews wrote:In Europe high speed lines are often built alongside motorways. There may well be land either alongside or over roads that would be useful. That would reduce the cost.
Not a whole lot. I-95 for example, the most obvious route permits higher grades and sharper curves than are practical for a HSR.
In at least some areas there are available lines. Between Trenton and New Brunswick you have US 1, which is perfectly straight and slowly being turned into a freeway. There's also a former interurban to the east, now power lines (and part of US 1's bypass around New Brunswick). However, that part of the NEC is also straight, and probably one of the newest parts of the line (having replaced a much curvier line along the D&R Canal in the 1860s). North of New Brunswick, the New Jersey Turnpike might provide an adequate alignment. Maybe the Turnpike could be used into South Jersey, where it would branch off (along Route 38? Or the old PRR line through Moorestown?) and cross the Delaware to Philly. Beyond Philly they could probably use the ex-Reading line past the airport, and then follow I-95 through Chester. Wilmington would probably need a bit of new right-of-way, but for the most part the parallel I-95 and ex-B&O ROWs should be good. I-95 gets curvier in Maryland, but there's still a fair amount of farmland to use. Beyond Baltimore the power line ROW between US 29 and I-95 might be best, right up to the DC border (this was considered for taking I-95 inside the Beltway before the freeway revolts).
There are certainly places that will require condemnation, but it can probably be kept to a minimum by using existing ROWs.
MudLake wrote:Kaback9 wrote:Wait are you suggesting building a new ROW in Conn? Why?
This is covering old ground but Amtrak has solutions to the NYP - WAS corridor. With enough money the line could be upgraded to 150 mph speed over significant sections. Change the wires and signalling, build a new tunnel in Baltimore, straighten some curves in Philadelphia (side benefit - N. Philly would improve with some demolition). By contrast, the ROW is southwest Connecticut is hopeless as is for achieving anything reasonable for speedy operation.
One possibility north of NYC would be to use the LIRR and build a "Sunnel" across Long Island Sound. It would certainly be expensive, but perhaps less so than building a line across southern Connecticut to the same standards.