Kendal Green station
Down past the end of the outbound platform, there's some broken, rusty rail sitting on the right-of-way, and clearly enough room to make this a standard full-length platform if this station served enough passengers to justify any investment at all, which it does not. A better plan would involve building new platforms eastward toward the Mass Central Rail Trail.
Hastings "station"
So the story here is that Hastings is not in fact a station: it was a grade crossing where passengers could board and alight in the middle of the road while the train was stopped. It's only ¾ mile from Kendal Green, so hopefully the temporary suspension will be made permanent: this stop has no reason to exist.
Silver Hill station
Silver Hill, the other Weston station that has been closed, is a bit more 'real" than Hastings: it at least has a parking lot that holds a few vehicles, and there's a real station and platform down there in the open cut. Unfortunately, the surrounding land use is Weston-typical low-density single-family housing, so there's no prospect of ever having a reasonable walkshed.
Silver Hill station
Merriam Street crosses the line on a wood-deck bridge; I'm guessing that the abutment on the left (south) side is original, and that the right-hand abutment is newer. On the plus side, the tracks being down in a trench here means that constructing a high-level platform here would be comparatively east, especially if it only needed to be a 300-foot platform for a single FLIRT DMU. On the minus side, there will never be enough foot traffic here to justify investing a dollar in new platforms, so this closure is probably permanent as well, unless the town wants to spend the money.
Lincoln station
How did you guess? This, it turns out, is just the inbound platform; the outbound platform is actually across the street. Totally inaccessible, of course, although at least here they used rubberized grade-crossing protectors rather than just dumping hot-mix between the outbound rails.
Lincoln station
Having crossed Lincoln Road, I'm standing in the town-owned commuter parking lot looking at the outbound platform. I guess it makes sense to have the outbound platform close to people's cars so they can head right home — but not nearly as much sense as it would make to have both platforms on the same side of the street, for which there is clearly adequate room.
Lincoln station
This platform is only 390 feet long, but there's clearly sufficient room parallel to the west end of the parknig lot to make it 500 feet at least. More would potentially be problematic, but building a high-level platform here is entirely trivial with no accessibility concerns (just ramp down into the parking lot).
Concord station
Moving on to Concord, the station at Concord Center is surrounded by parking lots, but most of them belong to private businesses and are not available to train passengers. A small number of permit spaces in this lot are available to Concord residents for $400 a year or to nonresidents for $800 — there is a long waiting list.
Concord station
I assume this is the, or at least an, original station building, albeit heavily modified for its current retail-store tenants. The mural was designed and painted by David Moore in 1997. The building being so close to the tracks here is actually a problem for high-level platforms, because there's not enough width for a platform and a ramp here.
West Concord station
West Concord was where the old Framingham & Lowell crossed the Fitchburg. These railroads were never under common ownership — the F&L was ultimately abandoned under Conrail ownership after having been a part of the Old Colony/New Haven system, and the Fitchburg became part of the B&M. There's more parking here than at Concord Center, including some daily spaces, and both residential and business districts are within easy walking distance as well.
South Acton station
Looking back at the outbound platform from the inbound side. There seems to be a fairly consistent preference for having the parking closer to the outbound platform on this line: Brandeis/Roberts, Silver Hill, Lincoln, Concord, West Concord, South Acton, Ayer, and Fitchburg all share that design feature.
Littleton/495 station
South of Foster Street, a full crossover allows trains to be turned. In the foreground, Littleton/495 station has only bike racks, rather than lockers, although it's about the same age as South Acton. There are other significant design differences as well, owing to the location of the headhouse far to the east of the actual platform.
Littleton/495 station
Unlike South Acton, Littleton/495 is a center-platform station. I'm looking down the 400-foot-long straight ramp that connects the headhouse with the actual station platforms. Building the station this way allowed the MBTA to avoid having to put in an elevator; the platform location is determined by the ADA-allowable maximum ramp slope.
Littleton/495 station
Another common theme of this excusion has been platforms absolutely covered in deicing salt. This is clearly a combination of dramatically reduced footfall due to the COVID-19 pandemic, the suspension of weekend service, and the total suspension of service inbound of Littleton for a two-month construction acceleration program.
Littleton/495 station
Looking west along the outbound side of the center platform. Seems to be holding up pretty well, despite the excessive salt application. Inbound of here, Pan Am Railways maintains trackage rights, but as the clearances are limited to AAR Plate E, there is little if any traffic. (The state owns the entire route east of Ayer.)
Old Littleton station
The station is located at the intersection of King St., Harwood Ave., Sanderson Rd., Taylor St., and Harvard Rd. It's a very well-known location among the cycling community, because the "Harvard to Harvard" route from Harvard Square to the town of Harvard runs up Harwood Ave. to turn left across the King St. grade crossing.