Best way to bid long distance.

[cmturner]

I have the chance to bid on a couple shopping centers that are about 5-6 hrs away from me. I am thinking that you guys that cover multiple states can't possibly run around and do bids on all of these spread out centers; so I am sure there is a way to develop a bid sight unseen. I have the site maps from the companys website but it doesn't say the measurements on the sidewalks and I also wanted to see what you guys did to ensure proper water supply as well. Any little tips would be greatly appreciated.

[Clean Image]

google earth has a measuring tool I use often.