Steepest Grades (Past & Present)

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

Moderators: CRail, sery2831

Steepest Grades (Past & Present)

Postby Eliphaz » Sat Aug 25, 2012 2:38 am

Where are the steepest grades on the light rail systems, and how steep are they?

Are there gradient diagrams of the routes available?
User avatar
Eliphaz
 
Posts: 446
Joined: Mon Nov 23, 2009 2:01 pm
Location: Amherst, MA

Re: steepest grades?

Postby diburning » Sat Aug 25, 2012 2:49 am

I think the steepest grade might be on the Green Line's B branch between Allston St and Washington St (it starts going up grade just before Warren St)
User avatar
diburning
 
Posts: 2963
Joined: Sat Feb 09, 2008 7:37 pm
Location: Practicing safe CSX by using Three-Step Protection

Re: steepest grades?

Postby typesix » Sat Aug 25, 2012 11:27 am

When the Lechmere line reopened, the T claimed in a newspaper article that the grade from North Station to Science Park was the steepest, but no figures were presented.
typesix
 
Posts: 627
Joined: Fri Mar 12, 2004 11:23 am
Location: Boston

Re: steepest grades?

Postby Gerry6309 » Sat Aug 25, 2012 12:04 pm

Eliphaz wrote:Where are the steepest grades on the light rail systems, and how steep are they?

Are there gradient diagrams of the routes available?


The steepest grade was traditionally the section of Commonwealth Av. between Warren St. and Summit Av. Someone once told me it was about 12%. The steepest grade on the subway was the former ramp from Haymarket Station to the Lechmere Viaduct and Charlestown El and the grade from the Pump Room to the surface on the East Boston Tunnel (all 5.0%). The new ramp at North Station is probably around that steep, but that is considered the limit for the subway routes.
Gerry. STM/BSRA

The next stop is Washington. Change for Forest Hills Trains on the Winter St. Platform, and Everett Trains on the Summer St. Platform. This is an Ashmont train, change for Braintree at Columbia.
User avatar
Gerry6309
 
Posts: 1484
Joined: Wed Jun 13, 2007 10:46 pm
Location: Boston

Re: steepest grades?

Postby MBTA F40PH-2C 1050 » Sat Aug 25, 2012 12:05 pm

since we are on the steepest grade topic....where is the steepest grade on the commuter rail? the Mystic River bridge on the Northside? the Back Bay tunnel on the South Side??
MBTA F40PH-2C 1050
 
Posts: 3498
Joined: Thu Mar 11, 2004 7:57 pm

Re: steepest grades?

Postby TomNelligan » Sat Aug 25, 2012 12:07 pm

If the big hill on Commonweath Avenue isn't the steepest on the Green Line, it's certainly the longest sustained grade on the system.

Underground, aside from the climb outbound from North Station, there's also the short but steep grade east of Kenmore Square where the tunnel dives under the Muddy River.
TomNelligan
 
Posts: 3180
Joined: Fri Mar 12, 2004 5:43 pm
Location: Massachusetts

Re: steepest grades?

Postby AEM7AC920 » Sat Aug 25, 2012 12:25 pm

MBTA F40PH-2C 1050 wrote:since we are on the steepest grade topic....where is the steepest grade on the commuter rail? the Mystic River bridge on the Northside? the Back Bay tunnel on the South Side??


The neponset river bridge on the south side would be my guess since its 3% and you have the hillll departing Sharon as well as the hill where the franklin branch begins.
AMTRAK HAWK DETECTOR TRACK 1 NOOO DEFECTS OUT!
AEM7AC920
 
Posts: 2582
Joined: Fri Mar 12, 2004 4:51 pm
Location: Unkown.....

Re: steepest grades?

Postby Eliphaz » Sun Aug 26, 2012 8:22 am

The east side of the East Boston Tunnel was going to be my guess, or the underpass by the airport.

No one has an actual route profile map though ? like the railroads generally have?
User avatar
Eliphaz
 
Posts: 446
Joined: Mon Nov 23, 2009 2:01 pm
Location: Amherst, MA

Re: steepest grades?

Postby The EGE » Sat Sep 08, 2012 11:16 pm

The original tunnel plans are available in some of the old documents - BTC reports and such. There's a nice one of the Washington Street Tunnel in the State Transportation Library.
"Give me an unobstructed right-of-way and I'll show them how to move the earth!"
User avatar
The EGE
 
Posts: 2452
Joined: Wed Feb 16, 2011 6:16 pm
Location: Waiting for the C Branch

Re: steepest grades?

Postby Austin023 » Thu Oct 11, 2012 3:34 pm

Even though this is abandoned, how about the grades where those tunnels lead south from Boylston Station and through the bellmouths under Tremont Street? Those seem to be rather steep---or perhaps at the bellmouths themselves? My guess would be for active lines, the incline by the Lechmere Viaduct would be the steepest now in the light rail system.
Austin023
 
Posts: 16
Joined: Fri Jun 29, 2012 5:29 am
Location: Massachuusetts

Re: steepest grades?

Postby ferroequinologist » Thu Oct 11, 2012 11:08 pm

Austin023 wrote:Even though this is abandoned, how about the grades where those tunnels lead south from Boylston Station and through the bellmouths under Tremont Street? Those seem to be rather steep---or perhaps at the bellmouths themselves? My guess would be for active lines, the incline by the Lechmere Viaduct would be the steepest now in the light rail system.


I've seen reference to the grades at the flying junction at the end of the tunnel being particularly steep, but I've never seen any numbers.
ferroequinologist
 
Posts: 118
Joined: Mon Dec 26, 2011 11:24 pm

Re: steepest grades?

Postby MBTA1016 » Tue Oct 16, 2012 8:29 pm

I wanna say the grade going on to the franklin line off the NEC is steep but its probably not the steepest on the southside.
Josh.W
Formally mbta fan
WE ARE BOSTON, WE ARE BOSTON STRONG


Flicker: http://www.flickr.com/photos/116905626@N06/
Blog: http://jpwilkinson2448.blogspot.com/?m=1
User avatar
MBTA1016
 
Posts: 1713
Joined: Wed Nov 24, 2010 12:16 pm
Location: Walpole MA

Re: steepest grades?

Postby MarkB » Wed Oct 17, 2012 7:40 pm

Here's a question. The old Dedham Line trolly stopped in the middle of Washington street and forked back to change directions and go back to Forest Hills. Did that line go up Bellevue Hill on Washington street, or did it branch off of the Charles River line at Spring st and stay on Centre and Grove sts to get to Washington st again?
MarkB
 
Posts: 105
Joined: Mon May 30, 2011 11:16 am

Re: steepest grades?

Postby MBTA3247 » Wed Oct 17, 2012 10:32 pm

The line went straight up Washington St.
"The destination of this train is [BEEP BEEP]" -announcement on an Ashmont train.
User avatar
MBTA3247
 
Posts: 2592
Joined: Tue Jul 11, 2006 6:01 pm
Location: Milton

Re: steepest grades?

Postby Arborwayfan » Thu Oct 18, 2012 12:02 pm

According the the Bicentennial history of Roslindale (a little book published 1975 or 1976), Washington St. above Roslindale Square was cut and filled to produce a more uniform grade for trolleys. This would be why the houses just downhill from the Pleasant Cafe have stairs down from the street into their yards.
Arborwayfan
 
Posts: 652
Joined: Thu Jul 15, 2004 11:27 am
Location: Terre Haute, Indiana

Next

Return to Massachusetts Bay Transportation Authority (MBTA)

Who is online

Users browsing this forum: BandA and 2 guests