Meanwhile, approaching the southbound on-ramp (and at the ramp) there's a recent paddle sign with both I-95 and 128 shields: https://goo.gl/maps/5TCKNmXNMzw
Those were installed by an independent contractor that obviously didn't get the memo regarding the prohibition of MA 128 shields on guidance signs along the I-95 portion of the Yankee Division Highway. IMHO, those particular LGS' are actually better looking (in terms of overall layout and I-95 shields) than the actual MassHighway/DOT erected ones nearby.
Is there some official policy to avoid ground mounted big green signs on interstates (except the Mass Pike). Ive been on most of all the interstates in MA except 190 195 and 391. Only highway in MA that I've seen that has them are Route 2 and Route 128, but there are still many many highways in MA that I haven't been on.
I believe the current MassDOT policy is to have all major BGS' overhead-mounted even along 4-laners. Supplemental BGS' can be and usually are ground-mounted.
The ground-mounted major BGS' one sees along I-90, MA 2 & 128 are older and predate the current policy. IIRC, most if not all of the older ground-mounted BGS' along 128 have since been replaced with newer overhead-mounted BGS'.
If Lowell Connector is state maintained how come they never assigned a number to it or even an unsigned number, there was Business Spur 495 but I meant like MA 203 or MA 595 or something?
Since 1971, MA 203 has been taken. At the time the Connector was built, not every highway in the Bay State was given a route number. Prior to 1971, the Southeast Expressway between Neponset Circle/Granite Ave. and Mass Ave. had no route number assigned to it (MA 3 exited and followed the current MA 203).
Prior to the mid-70s, the I-90 designation along the Mass Pike
used to end at the Allston toll plaza (I-90 was originally supposed to end where the cancelled I-695/Inner Belt would've crossed). The Pike Extension from there to its pre-Big Dig terminus, the South Station Tunnel/Pulaski Skyway part of the Expressway (then unsigned I-95/now I-93) was for the first decade of its life unnumbered.
When did the N/S/E/W suffixes end in MA? I remember seeing a few of those randomly many years back (2000) on a trip to Salem MA on Route 128.
If you're referring to exit numbers; such were largely phased out during the mid-to-late 1980s. Routes that retained older exit numbers, like US 3, the Lowell Connector & MA 128 east of I-95, only retained the old-school N/S/E/W exit suffixes due to the signs yet not being replaced.
Along 128, the suffixed exits for MA 114 (Exit 25) changed from E/W (way back when such was S/N) to the current A/B sometime during the early 90s (maybe even late 80s).
The suffixes for MA 1A (Exit 20) changed from S/N to B/A sometime during the 90s when the overhead BGS' replaced the ground-mounted BGS'.
The suffixes for MA 35 (Exit 23S-N) and MA 62 (Exit 22E-W for the exit ramps off northbound 128) were recently dropped when the interchanges were completely reconfigured to diamond/SPUI-type interchanges.