Find the most detailed map available. If the address you are looking for is in a rural area, a county highway map may be your best option. These are available at your local county office building. If the area is somewhat urban or suburban, you may be able to find an atlas that has a page map for each community. Search for the street name of the address you are researching in the index and, when you find it on the map, note the cross streets in its vicinity.
Visit online mapping services like Mapquest, Google Maps or Yahoo Maps. Enter the name of the community and/or road you are searching for and locate it on the map that appears on the page. As you zoom in on a location, the map becomes more detailed and the names of side streets and residential roads will appear. Some sites include aerial views, so if you are familiar with the address, you can see what the cross street areas look like.
Call or contact your county's tax mapping/real property office. If you have trouble reading digital or hard copy maps, someone there can provide you with a list of cross streets if you tell them an exact address.