MIKEMOXIEMAINE wrote:I'm still unsure that any of the MBTA's rail on the northside is rated above 263.
Fitchburg Line, Fitchburg-Ayer (PAS main): yes.
Lowell Line (PAR main), N. Chelmsford-Lowell: yes
Haverhill Line, Lowell Jct.-Lawrence (PAR main): yes. Ongoing construction to 3 Shawsheen River bridges, due for completion this year. Replacement of all remaining lightweight rail to state line occurring this year.
Haverhill Line, Lawrence-Haverhill (PAR main): pending (Merrimack River bridge replacement). In design, construction schedule TBD on funding.
Wildcat Branch: yes (no bridges, track is mostly 11-year-old Downeaster installation up to weight spec)
Lowell Line, Wilmington-Montvale: ?. No bridges between Wildcat and Cross St. Winchester. Tighe Warehouse could be 286K-rated if traffic comes from Lawrence via Wildcat. Rail not too old due to Downeaster traffic, probably up to weight spec.
Lowell Line, Lowell-Wilmington: no. Not needed for Billerica Shops customers.
Lowell Line, Woburn-Boston: no. Washington St. Somerville bridge deficient...due for replacement with Green Line extension. Unclear if Route 16/Mystic River stone arch bridge restricted. Unclear if any other misc. small-stream or road overpasses deficient. Very washout-prone...culvert work being done this year in Somerville-Medford in prep for Green Line extension. 286K not needed for current/likely Boston-area customers.
Fitchburg Line, Boston-Ayer: no (Route 62 Concord bridge). No freight except Global ethanol train and 1 small customer in Littleton.
Reading Line, Boston-Wilmington Jct.: no. No freight.
Eastern Route, Revere-all points north: no (Saugus Draw)
Eastern Route, Boston-Revere: ?. Mystic River bridge is mid-1980's construction...probably 286K-rated. 1 small bridge over Chelsea River...unknown. Stretches of older rail needing replacement. Possible 286K to E. Boston Branch, or very easy upgrade if Chelsea R. bridge is only holdup. 286K not needed for current/likely Boston-area customers, Lowell or Fitchburg Line must be upgraded first.
Reading, Fitchburg east of Ayer, and Eastern Route north of Saugus Draw are all width-restricted by high station platforms, so will never have 286K due to lack of clearances for substantial freight traffic. Reading also severely height-restricted. Only possible branchline addons to PAR 286K are the wide-clearance Lowell Line to Boston and Eastern Route to E. Boston Branch.