There is no eay cheap fix to this solution, but this quote below is how why've done a few garages to overcome special obstacles:
Hmmmmm? He does have a 100 amp meter base on the house, so overhead to a new 200 amp base on the garage,and then a 100 amp subfeed buried from the garage to the house might be a good way to go.
otherwise the best solution would be to have them bring another pole in just to the left so they can get a clear shot at the house and then do a direct burial, cleaner, safer, etc...that's a heck of a span to go overhead, and even if they did do that, most all municiples will make you upgrade the mast to a 2" riser with guy wire before they will reconnect you, which then leads to upgrading house electrical anyways...so then your really opening up pandora's box.
First call would be to a electrcian, get hsi take and opinion on it, plus most codes require a licsenced sparkey to do the actual change over anyhow, he can tell you what will be needed, then you or him will call utilites for a meter spot, they will tell you where they will put the meter on the building should you chose to go to the garage first and back feed the house, or they will tell you what can be done ro run a new line to the house.
so call sparkey and go from there...this aint no DIY **** here boyz