Grand Junction Branch (The North/South Side Connection)

Discussion relating to commuter rail, light rail, and subway operations of the MBTA.

Moderators: CRail, sery2831

Re: Grand Junction Branch (The North/South Side Connection)

Postby WatertownCarBarn » Sat Jul 18, 2015 6:12 pm

Behind the MIT ROTC building (between Pacific and Vassar) the is an at grade pedestrian crossing of the GJ. Fairly well trafficed and lit.
WatertownCarBarn
 
Posts: 79
Joined: Mon May 30, 2011 8:56 am

Re: Grand Junction Branch (The North/South Side Connection)

Postby BostonUrbEx » Sat Jul 18, 2015 10:29 pm

GP40MC1118 wrote:B721 runs Sunday through Thursday. OD 130PM Framingham. . . .


Great info here. About what time do they look to leave Everett, and what time through Swift on the return? Or is it too wildly variable?
User avatar
BostonUrbEx
 
Posts: 3604
Joined: Thu Dec 03, 2009 9:55 pm
Location: Winn to MPT 8, Boston to MPN 38, and Hat to Bank

Re: Grand Junction Branch (The North/South Side Connection)

Postby GP40MC1118 » Sat Jul 18, 2015 10:54 pm

It's somewhat variable.

Thursday they were very early coming back, right after the rush hour parade.

Most of the time its anytime after 930PM-1030PM coming back.

D
GP40MC1118
 
Posts: 3314
Joined: Thu Mar 11, 2004 8:06 pm

Re: Grand Junction Branch (The North/South Side Connection)

Postby 130MM » Mon Jul 20, 2015 11:54 am

GP40MC1118 wrote:Given the current track throws necessitated by the GLX extension to Union Square, any redesign to
make a direct GJ connection to the FRML problematic.
D


Apparently, nobody here has seen the plans for the "new" Swift. The connection to the GJ will be a realigned track crossing the FML #2 on a moveable point frog, and connecting to the FML #1 with a standard #10 turnout(a la Beverly Jct - albeit with a smaller turnout). I've got the plans upstairs, if you want to see them, D.

DAW
130MM
 
Posts: 470
Joined: Mon Mar 15, 2004 1:57 pm
Location: Wakefield, MA

Re: Grand Junction Branch (The North/South Side Connection)

Postby GP40MC1118 » Mon Jul 20, 2015 12:17 pm

Sure DW....I heard about this disaster of epic proportions...

D
GP40MC1118
 
Posts: 3314
Joined: Thu Mar 11, 2004 8:06 pm

Re: Grand Junction Branch (The North/South Side Connection)

Postby BostonUrbEx » Mon Jul 20, 2015 10:40 pm

I keep hearing about this impending 'disaster' that will be a movable point frog at Swift. Is the one in Beverly really unreliable and terrible?
User avatar
BostonUrbEx
 
Posts: 3604
Joined: Thu Dec 03, 2009 9:55 pm
Location: Winn to MPT 8, Boston to MPN 38, and Hat to Bank

Re: Grand Junction Branch (The North/South Side Connection)

Postby sery2831 » Tue Jul 21, 2015 12:45 am

130MM wrote:
GP40MC1118 wrote:Given the current track throws necessitated by the GLX extension to Union Square, any redesign to
make a direct GJ connection to the FRML problematic.
D


Apparently, nobody here has seen the plans for the "new" Swift. The connection to the GJ will be a realigned track crossing the FML #2 on a moveable point frog, and connecting to the FML #1 with a standard #10 turnout(a la Beverly Jct - albeit with a smaller turnout). I've got the plans upstairs, if you want to see them, D.

DAW


Will this only lead to Tower A on the number one? Will you have to reverse West towards Porter(shuffle) to continue on the Grand Junction? Or is the switching lead on the west end of BET being reconfigured as well?
Moderator: MBTA Rail Operations
User avatar
sery2831
 
Posts: 5136
Joined: Fri Mar 12, 2004 2:15 pm
Location: Manchester, NH

Re: Grand Junction Branch (The North/South Side Connection)

Postby GP40MC1118 » Tue Jul 21, 2015 12:38 pm

Moveable point frogs are fine when the work, but a royal pain when they don't. At one
point, there was a directive requiring C&S personnel only to handthrow it when a failure
occurred. Never liked them and needlessly complicates things. A diamond with a single
power switch for No.2 Track would've sufficed.

As for the Swift caper, having not seen a recent rendering of plan, I understood that, by
example, for CSX to get off the GJ to the 4th Iron, would require coming across the
switching lead for BET. Duh...

D
GP40MC1118
 
Posts: 3314
Joined: Thu Mar 11, 2004 8:06 pm

Re: Grand Junction Branch (The North/South Side Connection)

Postby BandA » Tue Jul 21, 2015 11:25 pm

If the frog croaks, just blame Keolis :wink:
User avatar
BandA
 
Posts: 1901
Joined: Thu Oct 11, 2012 11:47 am

Re: Grand Junction Branch (The North/South Side Connection)

Postby sery2831 » Wed Jul 22, 2015 1:40 am

GP40MC1118 wrote:
As for the Swift caper, having not seen a recent rendering of plan, I understood that, by
example, for CSX to get off the GJ to the 4th Iron, would require coming across the
switching lead for BET. Duh...

D


So the switching lead gets connected to the Fitchburg? There isn't a whole lot of room to play with there. They will have to install more derails in BET. As the entire yard is downhill going west.
Moderator: MBTA Rail Operations
User avatar
sery2831
 
Posts: 5136
Joined: Fri Mar 12, 2004 2:15 pm
Location: Manchester, NH

Re: Grand Junction Branch (The North/South Side Connection)

Postby BostonUrbEx » Wed Jul 22, 2015 2:31 am

So what benefit does a movable frog point have versus a standard diamond? Higher speeds/smoother ride?
User avatar
BostonUrbEx
 
Posts: 3604
Joined: Thu Dec 03, 2009 9:55 pm
Location: Winn to MPT 8, Boston to MPN 38, and Hat to Bank

Re: Grand Junction Branch (The North/South Side Connection)

Postby MBTA3247 » Wed Jul 22, 2015 7:24 am

Yes, along with vastly less wear to the rails. Though I've never heard of a diamond with movable point frogs, just regular turnouts.
"The destination of this train is [BEEP BEEP]" -announcement on an Ashmont train.
User avatar
MBTA3247
 
Posts: 2609
Joined: Tue Jul 11, 2006 6:01 pm
Location: Milton

Re: Grand Junction Branch (The North/South Side Connection)

Postby butts260 » Wed Jul 22, 2015 12:26 pm

On the Eastern Rt. doesn't the diamond at Beverly Junction, where the Gloucester Branch joins, have moveable point frogs?
butts260
 
Posts: 155
Joined: Sun Apr 26, 2009 2:04 pm
Location: Rockport, MA

Re: Grand Junction Branch (The North/South Side Connection)

Postby typesix » Wed Jul 22, 2015 12:46 pm

BostonUrbEx wrote:So what benefit does a movable frog point have versus a standard diamond? Higher speeds/smoother ride?


Also less noise.
typesix
 
Posts: 629
Joined: Fri Mar 12, 2004 11:23 am
Location: Boston

Re: Grand Junction Branch (The North/South Side Connection)

Postby ExCon90 » Wed Jul 22, 2015 2:27 pm

MBTA3247 wrote:Yes, along with vastly less wear to the rails. Though I've never heard of a diamond with movable point frogs, just regular turnouts.

The Reading had a lot of them, and some still remain. They were fond of British-style double-track junctions with two turnouts and one diamond, and the diamonds mostly had movable-point frogs. There's one at CARMEL, where the Warminster line diverges from Lansdale-Doylestown, and I think the ones at 16th St. Junction, where the Norristown trains diverge, have movable-point frogs. The one at Jenkintown was recently removed and replaced by standard turnouts.
ExCon90
 
Posts: 3491
Joined: Thu Sep 18, 2008 1:22 pm

PreviousNext

Return to Massachusetts Bay Transportation Authority (MBTA)

Who is online

Users browsing this forum: Majestic-12 [Bot] and 7 guests