There are a lot of infrastructure problems in this state. The Southeast Expressway is a prime example. Long stretches without any sort of breakdown lane and you have inefficient HOV lanes.
The interchanges at 93/95 in Woburn and in Canton both need to be completely rebuilt and redesigned so there are flyover ramps and you have a stacked interchange.
The new stretch where 24 north merges onto 93 south is nice since there's now a dedicated lane, but the people coming from 24 north don't form one line, they go side by side and some even try to merge onto 93 early and that creates some backups.
I am not saying we need to build more freeways, or have 18 wide freeways like you see in some other cities, but taking what we have and making some minor upgrades will be nice.