Are we able to break the lease through eminent domain?

Earlier this month, my girlfriend and I signed a lease agreement on a two-bedroom home. Literally days after signing this lease, her place of employment offered her an apartment on-site for a reduced rate. As I was looking at the lease we signed at the end of May, the landlord put at the top that the lease was made June 20th, 2014, which is actually our move-in date, and then lists June 20th, 2014 again for the move in date. This means that our lease was technically signed in the future? Does this hold any bearing legally? Literally the same night after we returned home from signing our lease, the landlord informed us that after we left tonight, he went across the street to talk to my old friends/neighbors. They had told me previously and he couldn’t remember if he had mentioned to us about the road construction that will be happening (I remember mentioning it to some people that came to look at the house, but couldn’t remember who). I am sure that you saw all of the flags and such in the yards down the entire street. When I talked to the neighbors before when I first showed you the house, nobody knew what the exact plan was – namely if they were going to do sidewalks or not. I found out tonight that they are going to do sidewalks on both sides and will be widening the road. There is only one house on the street that is happy about this as everyone will be losing basically half of their front yard. There are stakes in the yards with pink flags on them – that is where the sidewalk will go to. Basically, my house will be losing the flower bed in the front yard and I believe that there will no longer be room to park a car on the stones to the side of the driveway. Anyway, I didn’t realize that it was going to be such a big project. I thought that they were just going to be resurfacing the road and I feel a little badly that it wasn’t disclosed.