Business routes of Interstate 8
There are five business routes of Interstate 8. The portions of these routes running through California are mostly unsigned.
| |
|---|---|
| Highway system | |
El Cajon loop
| Interstate 8 Business | |
|---|---|
| Location | El Cajon, California to Lakeside, California |
| Length | 8.15 mi[1] (13.12 km) |
Business Loop 8 (I-8 Bus.) begins as El Cajon Boulevard at an interchange with I-8, loosely paralleling the freeway on the northern side. The loop passes through Bostonia and Lakeview before ending at the Lake Jennings Park Road interchange with I-8.[1]
Major intersections
The entire route is in San Diego County.
| Location | mi[1] | km | Destinations | Notes | |
|---|---|---|---|---|---|
| El Cajon | 0.00 | 0.00 | .svg.png){kind=small} | Western terminus; I-8 exit 15; no access to I-8 east | |
| Chase Avenue / Boulevard Place | Partial interchange eastbound, at-grade intersections westbound | ||||
| 3.77– 3.86 | 6.07– 6.21 | | I-8 west exit 20A; no access to I-8 west | ||
| Lakeside | 7.98– 8.15 | 12.84– 13.12 | | Eastern terminus; road continues south as Lake Jennings Park Road | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
Alpine loop
| Interstate 8 Business | |
|---|---|
| Location | Alpine, California |
Business Loop 8 (I-8 Bus.) in Alpine spanned from I-8 exit 30 to exit 33 and was mostly former US 80 along Alpine Drive.
El Centro loop
| |
|---|---|
| Location | El Centro, California |
| Length | 4.25 mi[2] (6.84 km) |
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Business Loop Interstate 8 (I-8 Bus.) is a business loop route that diverges from Interstate 8 in El Centro, California, to pass through the downtown area. Interstate 8 Business originates and terminates with I-8 and acts as a direct link to El Centro as I-8 bypasses the downtown area.
The I-8 Bus. path through El Centro traces roughly three sides of a rectangle with I-8 constituting the fourth side. I-8 Bus. begins at its western terminus with I-8 by going north along Imperial Avenue. When I-8 Bus. reaches the intersection of Adams Avenue it turns east along that road. Along this stretch, I-8 Bus. is joined by State Route 86 (SR 86) which approaches from the north along Imperial Avenue, and by Imperial County Route S80 which approaches from the west along Adams Avenue. The three routes continue joined as Adams Avenue ends and turns south along Fourth Avenue where S80 then turns to continue east. I-8 Bus. and SR 86 continue south running concurrent until I-8 Bus. reaches its eastern terminus with I-8.[2]
Only the portion of I-8 Bus. that runs concurrently with SR-86 is maintained by the state.[3] Along its concurrency with SR-86, I-8 Bus. is designated as part of the Juan Bautista de Anza National Historic Trail.[4]
Major intersections
The entire route is in El Centro, Imperial County.
| mi[2] | km | Destinations | Notes | ||
|---|---|---|---|---|---|
| 0.00– 0.33 | 0.00– 0.53 | | Western terminus; I-8 exit 114 | ||
| 1.69 | 2.72 |   | Western end of SR 86/CR S80 concurrency; former US 99 north/US 80 west | ||
| 2.90 | 4.67 | | Eastern end of CR S80 concurrency; former US 80 east | ||
| 4.19– 4.25 | 6.74– 6.84 | | Eastern terminus; eastern end of SR 86 concurrency; former US 99 south; I-8 exit 115 | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| |||||
Winterhaven–Yuma loop
State Business Route 8 (1) | |
|---|---|
| Location | Winterhaven, California–Yuma, Arizona |
| Length | 14.84 mi[5][6]:531 (23.88 km) |
| Existed | 1966–present[7] |
Business Loop 8 (I-8 Bus. or I-8 BL) begins at an interchange with I-8 and Winterhaven Drive in Winterhaven, California. The loop continues east, paralleling I-8 to the north and running concurrently with CR S24. I-8 Bus. then goes through downtown Winterhaven before CR S24 continues east and I-8 Bus. continues south, crossing I-8 again as well as the Colorado River into Yuma, Arizona. Passing to the west of Yuma Quartermaster Depot State Historic Park, I-8 BL goes through downtown Yuma as Fourth Avenue, intersecting US 95 after several blocks. The business loop curves to the east as 32nd Street, passing along the north side of Yuma International Airport and the south side of the Yuma Conservation Garden. East of the airport, I-8 BL passes through less-developed areas of eastern Yuma before ending at I-8.[5]
It is one of very few Interstate business loops that is interstate in the sense of crossing a state line. The Arizona segment of the business loop is also a section of Historic US 80.[8]
Major intersections
| State | County | Location | mi[5][6] | km | Destinations[8] | Notes |
|---|---|---|---|---|---|---|
| California | Imperial | | 0.00 | 0.00 | | Western terminus; I-8 exit 170 |
| Winterhaven | 0.39 | 0.63 |  | Western end of CR S24 concurrency; former US 80 west | ||
| 1.66 | 2.67 | | Eastern end of CR S24 concurrency; former US 80 east | |||
| | 2.01 | 3.23 | | I-8 exit 172 | ||
| Colorado River | 2.18 0.00 | 3.51 0.00 | California–Arizona state line | |||
| Arizona | Yuma | Yuma | 0.29 | 0.47 | .svg.png){kind=small} | Western end of Historic US 80 concurrency |
| 2.13 | 3.43 |   | ||||
| 10.47 | 16.85 |  | ||||
| 12.16– 12.66 | 19.57– 20.37 | | Eastern terminus; eastern end of Historic US 80 concurrency, road continues as Frontage Road; I-8 exit 9 | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| ||||||
Gila Bend loop
| |
|---|---|
| Location | Gila Bend, Arizona |
| Length | 5.96 mi[6]:535 (9.59 km) |
| Existed | 1973–present[9] |
State Business Route 8 (3) (also known as SR 8 Bus.) begins at an interchange with I-8 west of Gila Bend before passing under the freeway, continuing east and merging with SR 85 at a truck stop. As Pima Street, the two highways continue through downtown Gila Bend before I-8 BL turns south away from S 85 as Butterfield Trail and ending at I-8 at a diamond interchange.[10]
- Major intersections
The entire route is in Maricopa County.
| Location | mi[6] | km | Destinations[8] | Notes | |
|---|---|---|---|---|---|
| Gila Bend | 117.28– 117.93 | 188.74– 189.79 | | Western terminus; westbound entrance and eastbound exit; western terminus of Historic US 80; I-8 exit 115 | |
| 118.41 | 190.56 |  | Western end of SR 85 concurrency | ||
| 120.23 | 193.49 | | Eastern end of Historic US 80 concurrency; former US 80 east | ||
| 120.28 | 193.57 |  | Eastern end of SR 85 concurrency | ||
| | 122.93– 123.18 | 197.84– 198.24 | | Eastern terminus; I-8 exit 119 | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| |||||
References
- Google (November 2, 2014). "El Cajon Boulevard" (Map). Google Maps. Google. Retrieved November 2, 2014.
- Google (February 16, 2008). "Overview Map of I-8 in California" (Map). Google Maps. Google. Retrieved February 16, 2008.
- California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
- "Juan Bautista de Anza National Historic Trail Guide: Imperial County". National Park Service. Retrieved October 6, 2008.
- Google (December 9, 2017). "Overview of Business Loop I-8 Winterhaven-Yuma" (Map). Google Maps. Google. Retrieved December 9, 2017.
- Arizona Department of Transportation. "2013 ADOT Highway Log" (PDF). pp. 531–533. Retrieved December 9, 2017.
- Arizona Department of Transportation. "ADOT Right-of-Way Resolution 1966-P-075". Arizona Department of Transportation. Retrieved October 18, 2018.
- Arizona State Transportation Board Meeting Agenda (PDF) (Report). Show Low, Arizona: Arizona State Transportation Board. July 20, 2018. pp. 310 to 339. Retrieved June 16, 2019.
- Arizona Department of Transportation. "ADOT Right-of-Way Resolution 1973-P-074". Arizona Department of Transportation. Retrieved October 18, 2018.
- Google (November 2, 2014). "Business Loop I-8 Gila Bend" (Map). Google Maps. Google. Retrieved November 2, 2014.