I'm curious if there any steep grades on the MMA and how long they might be. In looking over the route on a map it seems like there might be but it's hard to tell as there are no contour lines on the map I'm using. By steep I mean around 2% or so. The only book I have that talks about the line doesn't seem to reference any tough grades or other operational concerns other than the cold winters.
On the old CP mainline the grades didn't get to 2% but were enough to warrent double-headed
steam on many freights. Westbound from Brownville Jct to Boundary was mostly uphill with Brownville
about 390 ft. elevation and Boundary above 1100 ft. Steepest westbound pulls were Brownville Jct. to
Barnard, westward from Onawa to Summit and Holeb up to Boundary with was a rise of about 600 ft.
Eastward trains had to climb from Megantic up to Boundary.