is there parking for semis

There is parking for semi's. This once was an actual 24 hr dinner truck stop many years ago. Sadly, it went out of business after the owner passed away, or so I heard. However, diesel fueling remained. A few years ago , Silvas Oil purchased it and made fueling available to the public, not just for truck drivers.

There's an area in the back for semi's - not huge though

Yes, a large lot. Showers also I think