Chapter 9

 Chapter 9 Resources

 Maps
Each map is divided into a grid formed by rows and columns.  These rows and columns correspond to the letters and numbers running horizontally and vertically along the edges of the map.  To use grid reference from the index search horizontally within the map.  It will be found within the grid square  where the row and column meet.

Adjacent map pages are indicated by numbers that appear at the top, bottom and side.  On each map page the legend explains the symbols that appear on the maps.  Note:  Almost every city and county has some types of formula it tries to follow.  While it is not a perfect formula it will assist you in finding locations in certain parts of a city or county.  

Facts you should know:

• Streets will always run east and west, and avenues will always run north and south
• Place and courts will always dead end or run no longer than a block.  They go in all directions and are inserted between streets and avenues and at times don’t line up. 
• Not all streets connect with each other.  Sometimes you will have to jog over a street to catch the other end of it. 
• Not all addresses will show up on your GPS system.
• A map book or smart phone map app is a great back up.
• Each incorporated city will follow a formula inside the city limits.  When you are out of the city, it will revert back to standard mapping grids. 

The State Highways in Washington State comprise a network of over 7,000 miles (11,270 km) of highways, including all Interstate and U.S. Highways that pass through the state.  The highways are maintained by the Washington State Department of Transportation (WSDOT).Most state routes are numbered in a grid, with even-numbered routes running east–west and odd-numbered routes running north–south.A highway is an arterial road.Highways roads are the backbone of the traffic network. 

They serve a dual purpose:

• to carry traffic over long distances, from one city to another, and
• to carry traffic from collector roads to freeways, where applicable.

Several systems of numbered highways exist in the United States:

• the Interstate Highway System
• the United States Numbered Highways
• various State Highway systems
• various County Highway systems

A Freeway is a highway designed for high speed traffic, with fully controlled access over entrance to, and exit from, the highway. A Freeway is the highest functional class of road.  Interstate Highways are classified as Freeways.

Interstates

1. I-5 North/South
2. I-405 North/South
3. I-90 East/West
4. I-205 North/South
5. I-82 North/South

US Highways

1. US 2
2. US 12
3. US 97
4. US 101

State Highways

1. SR 3
2. SR 7
3. SR 16
4. SR 18
5. SR 167
6. SR 507
7. SR 510
8. SR 512
9. SR 520
10. SR 522
11. SR 530
12. SR 532

Websites

1. WS DOT
2. Google
3. Mapquest
4. Waze