I-8 ( Interstate 8 ) is an interstate highway in the southwestern United States of America that is 348.25 miles (560.45 km) long. It begins on the southern edge of Mission Bay in San Diego , California and ends at the I-10 intersection near Casa Grande , Arizona . [2] Interstate 8 runs close to the state border with Mexico - for example, in Imperial County, the distance between the highway and the border is only 2 miles (3 km).
| Highway | |
Interstate 8  | |
|---|---|
| basic information | |
| A country |  USA |
| Region | , , , and |
| Status | Interstate highway system |
| Owner | and |
| Length | 560.45 [1] |
| Start | Sunset Cliffs Boulevard in San Diego |
| Through |  I-5 , San Diego I-15 , San Diego |
| the end |  I-10 , Casa Grande |
| opening date | 1964 |
At Mountain Springs, I-8 has the widest median of all interstate highways in the United States — 1.5 miles (2.4 km).
| miles | Km | |
| California | 172 | 277 |
| Arizona | 178.33 | 287 |
| Total | 350.33 | 564 |
Interstate 8 in San Diego
| Interstate 8 |
|---|
|
Notes
- ↑ Interstate 8 @ Interstate-Guide.com . Interstate Guide. Date of treatment February 15, 2008. Archived March 21, 2012.
- ↑ Overview Map of I-8 . Google maps . Date of treatment February 15, 2008. Archived March 21, 2012.