California Highways

1. Buckman Springs Road from Route 94 to I-8 (FAS, 9.89 mi)

   
   

2. Old Highway 80 from I-8 to Sunrise Highway (FAS, 0.10 mi)

   
   

   California @ AARoads: Historic US 80 Casey Cooper's Finding US 80

   
   

3. Sunrise Highway from Old Highway 80 to Mount Laguna (FAS, 10.18 mi)

   
   

   Just above the 5000' level, there is a sign telling people not to throw snowballs at vehicles or their passengers.

   
   

4. Sunrise Highway from Mount Laguna to Route 78 (FAS, 13.91 mi)

This route was defined in 1959.

Total milage: 34.08 mi.

1. Imperial Highway from Route 98 to County Road 2A02 (FAS, 1.42 mi) [Imperial County]

   
   

2. Imperial Highway from County Road 2A02 to the San Diego county line (FAS, 7.40 mi) [Imperial County]

   
   

3. Sweeney Pass Road from the Imperial county line to the Great Southern Overland State Route of 1849 (FAS, 9.93 mi) [San Diego County]

   
   

4. Great Southern Overland State Route of 1849 from Sweeney Pass Road to Route 78 (FAS, 29.42 mi) [San Diego County]

   
   

5. San Felipe Road from Route 78 to Route 79 (FAS, 16.85 mi) [San Diego County]

This route was defined in 1970. Supposedly, in the 1950s and 1960s, this was called a "Survival Route" out of San Diego.

This route is part of the De Anza National Historic Trail.

Total milage: 65.02 mi.

1. Yaqui Pass Road from Route 78 to Borrego Springs Road (FAS, 7.01 mi)

   
   

2. Borrego Springs Road from Yaqui Pass Road to Christmas Circle (FAS, 5.43 mi)

This route was defined in 1968.

This route is part of the De Anza National Historic Trail.

Total milage: 12.44 mi

1. Poway Road in San Diego from I-15 to the San Diego city limits (FAU, 2.15 mi)

   
   

2. Poway Road from the San Diego city limits to the San Diego urban limits (FAU, 4.22 mi)

   
   

3. Poway Road from the San Diego urban limits to Route 67 (FAS, 2.63 mi)

This route was defined in 1959.

Total milage: 9.00 mi.

1. Espola Road from Poway Road (County Route S4) to Rancho Bernardo Road (FAU, 5.15 mi)

   
   

2. Rancho Bernardo Road from Espola Road to the San Diego city limits (FAU, 0.16 mi)

   
   

3. Rancho Bernardo Road in San Diego from the San Diego city limits to I-15 near Scripps Miramar Ranch (FAU, 1.48 mi)

This route was defined in 1959.

Total milage: 6.79 mi.

1. Via de la Valle from Old Highway 101 (County Route S21) to the San Diego city limits (FAU, 0.76 mi)

   
   

2. Via de la Valle in San Diego from the San Diego city limits to the San Diego urban limits (FAU, 1.59 mi)

   
   

3. Via de la Valle in San Diego from the San Diego urban limits to the San Diego city limits (FAS, 0.38 mi)

   
   

4. Via de la Valle from the San Diego city limits to Paseo Delicias (FAS, 3.09 mi)

   
   

5. Paseo Delicias from Via de la Valle to El Camino del Norte (FAS, 1.30 mi)

   
   

6. Del Dios Highway from El Camino del Norte to the San Diego urban limits (FAS, 3.25 mi)

   
   

7. Del Dios Highway from the San Diego urban limits to the Escondido city limits (FAU, 3.99 mi)

   
   

8. Del Dios Highway in Escondido (FAU, 0.41 mi)

   
   

9. Del Dios Highway from the Escondido city limits to Valley Parkway (FAU, 0.20 mi)

   
   

10. Valley Parkway in Escondido from Del Dios Highway to Crescent Road (FAU, 1.39 mi)

    
    

11. Crescent Road in Escondido from Valley Parkway to Grand Avenue (FAU, 0.22 mi)

    
    

12. Grand Avenue in Escondido from Crescent Road to Valley Blvd (FAU, 0.98 mi)

    
    

13. Valley Blvd in Escondido from Grand Avenue to Valley Parkway (FAU, 0.09 mi)

    
    

14. Valley Parkway in Escondido from Valley Blvd to Washington Avenue (FAU, 3.07 mi)

    
    

15. Valley Parkway from Washington Avenue to the Escondido city limits (FAS, 0.67 mi)

    
    

16. Valley Parkway in Escondido from the Escondido city limits to Lake Wohlford Road (FAS, 0.10 mi)

    
    

17. Valley Center Road from Lake Wohlford Road to Route 76 (FAS, 13.98 mi)

    
    

18. South Grade Road from Route 76 to East Grade Road (FAS, 5.30 mi)

    
    

19. Canfield Road from East Grade Road to the Palomar Observatory (FAS, 4.02 mi)

This route was defined in 1959. Portions of this route were once signed as US 101.

Total milage: 44.79 mi. The Via de la Vallel portion of this route is part of Business Route 5.

East Grade Road between Route 76 and Palomar Mountain State Park (14.31 mi)

This route was defined in 1959.

1. Lomas Santa Fe Road from Old Highway 101 (County Route S21) to Linea Del Cielo (FAU, 2.60 mi)

   
   

2. Linea Del Cielo from Lomas Santa Fe Road to El Camino Real (FAU, 0.41 mi)

   
   

3. Linea Del Cielo from El Camino Real to Avenue de Acacias (FAS, 2.22 mi)

   
   

4. Paseo Delicias from Avenue de Acacias to Via de la Valle (FAS, 0.36 mi)

This route was defined in 1959. Portions of this route were once signed as part of US 101.

Total milage: 5.59 mi. This route is part of Business Route 5.

1. Encinitas Blvd from Old Highway 101 (County Route S21) and La Bajada (FAU, 4.04 mi)

   
   

2. La Bajada from Encinitas Blvd to Los Morros (FAS, 0.58 mi)

   
   

3. Los Morros from La Bajada to La Granada (FAS, 0.32 mi)

   
   

4. La Granada from Los Morros to Paseo Delicias (County Route S8) (FAS, 1.69 mi)

This route was defined in 1959.

Total milage: 6.63 mi.

1. Rancho Santa Fe Road from Encinitas Blvd (County Route S9) to the Carlsbad city limits (FAU, 2.46 mi)

   
   

2. Rancho Santa Fe Road in Carlsbad from the Carlsbad city limits to the San Marcos city limits (FAU, 3.05 mi)

   
   

3. Rancho Santa Fe Road in San Marcos from the San Marcos city limits to the San Marcos city limits (FAU, 0.80 mi)

   
   

4. Rancho Santa Fe Road from the San Marcos city limits to County Road A25-2 (FAU, 3.26 mi)

   
   

5. County Road A25-A from Rancho Santa Fe Road to Mission Road (County Route S14) (FAU, 0.17 mi)

This route was defined in 1959.

Total milage: 9.74 mi.

1. El Camino Real from Encinitas Blvd (County Route S9) to the Carlsbad city limits (FAU, 3.33 mi)

   
   

2. El Camino Real in Carlsbad from the Carlsbad city limits to the Carlsbad city limits (FAU, 1.37 mi)

   
   

3. El Camino Real from the Carlsbad city limits to the Carlsbad city limits (FAU, 0.50 mi)

   
   

4. El Camino Real in Carlsbad from the Carlsbad city limits to the Carlsbad city limits (FAU, 0.83 mi)

   
   

5. El Camino Real from the Carlsbad city limits to Palomar Airport Road (FAU, 0.15 mi)

   
   

6. El Camino Real in Carlsbad from Palomar Airport Road to the Carlsbad city limits (FAU, 0.91 mi)

   
   

7. El Camino Real from the Carlsbad city limits to the Carlsbad city limits (FAU, 0.96 mi)

   
   

8. El Camino Real in Carlsbad from the Carlsbad city limits to the Carlsbad city limits (FAU, 0.68 mi)

   
   

9. El Camino Real from the Carlsbad city limits to the Carlsbad city limits (FAU, 0.78 mi)

   
   

10. El Camino Real in Carlsbad from the Carlsbad city limits to Route 78 (FAU, 2.07 mi)

This route was defined in 1959.

Total milage: 11.58 mi.

1. Palomar Airport Road in Carlsbad from Carlsbad Blvd (County Route S21) to the Carlsbad city limits (FAU, 1.20 mi)

   
   

2. Palomar Airport Road from the Carlsbad city limits to El Camino Real (CR S11) (FAU, 2.77 mi)

   
   

3. Palomar Airport Road in Carlsbad from El Camino Real (County Route S11) to the Carlsbad city limits (FAU, 2.16 mi)

   
   

4. Palomar Airport Road from the Carlsbad city limits to Business Park/White Sands Drive (where it turns into San Marcos Drive), and then as San Marcos Drive to Twin Oaks Valley Road in San Marcos (FAU, 4.14 mi)

   
   

   It looks like this actually used to be the following: Palomar Airport Road from the Carlsbad city limits to Linda Vista Drive (FAU, 0.06 mi) Encinitas Road from Linda Vista Drve to Rancho Santa Fe (FAU, 1.28 mi) Encinitas Road in San Marcos from Rancho Santa Fe to Twin Oaks Valley Road (FAU, 2.80 mi) At some point, Encinitas Road was renamed as San Marcos Drive, and it looks like Linda Vista was either rerouted or renamed.

   
   

5. Twin Oaks Valley Road in San Marcos from San Marcos Blvd (previously Encinitas Road) to Sycamore Drive (FAU, 3.10 mi)

   
   

6. Sycamore Drive from Twin Oaks Valley Road to Deer Springs Road (FAU, 0.48 mi)

   
   

7. Deear Springs Road from Sycamore Drive to I-15 (FAU, 1.66 mi)

This route was defined in 1961.

Total milage: 15.51 mi.

1. Vista Way in Vista from Route 78 to the Vista city limits (FAU, 3.76 mi)

   
   

2. Vista Way from the Vista city limits to Route 76 (FAU, 1.76 mi)

   
   

3. Mission Road from Route 76 to Winter Haven (FAS, 3.97 mi)

   
   

4. Mission Road from Winter Haven to the Fallbrook urban limits (FAU, 5.62 mi)

   
   

5. Mission Road from the Fallbrook urban limits to I-15 (FAS, 2.40 mi)

This route was defined in 1968. Much of this route used to be part of US 395.

• California @ AARoads: Interstate 15 (Andrew Field)
• California @ AARoads: US 395 (Andrew Field)
• Finding US 395 (Casey Cooper).

Total milage: 17.51 mi.

1. Mission Avenue in Escondido from Center City Parkway to Washington Avenue (FAU, 0.90 mi)

   
   

2. Mission Road in Escondido from Washington Avenue to the Escondido city limits (FAU, 1.18 mi)

   
   

3. Mission Road in San Marcos from the Escondido city limits to Rancho Santa Fe (County Route S10) (FAU, 4.25 mi)

   
   

4. S Santa Fe Avenue from Rancho Santa Fe (County Route S10) to the Vista city limits (FAU, 2.65 mi)

   
   

5. S Santa Fe Avenue in Vista (FAU, 4.03 mi)

   
   

6. N Santa Fe Avenue from the Vista city limits to the Oceanside city limits (FAU, 0.75 mi)

   
   

7. N Santa Fe Avenue in Oceanside from the Oceanside city limits to Route 76 (FAU, 1.48 mi)

This route was defined in 1968.

Total milage: 15.24 mi.

1. Fallbrook Street from Mission Road (County Route S13) to Stage Coach Lane (FAU, 1.51 mi)

   
   

2. Stage Coach Lane from Fallbrook Street to Reche Road (FAU, 0.50 mi)

   
   

3. Reche Road from Stage Coach Lane to Live Oak Park Road (FAU, 1.07 mi)

   
   

4. Reche Road from Live Oak Park Road to I-15 (FAS, 2.80 mi)

This route was defined in 1959.

Total milage: 5.88 mi.

1. Pala Temecula Road from Route 76 to Mission Road (FAS, 0.08 mi, not county maintained) [San Diego County]

   
   

2. Pala Temecula Road from Mission Road to the Riverside county line (FAS, 4.97 mi) [San Diego County]

   
   

3. Pala Road from the San Diego county line to Route 79 (FAS, 4.33 mi)

This route was defined in 1959.

Total milage: 9.38 mi.

1. E Street in Chula Vista from I-5 to Bonita Street (FAU, 2.09 mi)

   
   

2. Bonita Road in Chula Vista from E Street to the Chula Vista city limits (FAU, 0.25 mi)

   
   

3. Bonita Road from the Chula Vista city limits to Glen Abbey Blvd (FAU, 0.32 mi)

   
   

4. Bonita Road from Glen Abbey Blvd to Glen Abbey Blvd (FAU, 0.56 mi)

   
   

5. Bonita Road from Glen Abbey Blvd to the Chula Vista city limits (FAU, 0.69 mi)

   
   

6. Bonita Road in Chula Vista from the Chula Vista city limits to Otay Lakes Road (FAU, 0.62 mi)

   
   

7. Bonita Road from Otay Lakes Road to San Miguel Road (FAU, 1.35 mi)

   
   

8. Bonita Road from San Miguel Road to Sweetwater Road (FAU, 0.26 mi)

   
   

9. Sweetwater Road from Bonita Road to the South Bay Freeway (Route 54) (FAU, 1.06 mi)

   
   

10. Worthington Street from the South Bay Freeway (Route 54) to Paradise Valley Road (FAU, 0.43 mi)

    
    

11. Paradise Valley Road from Worthington Street to Sweetwater Road (FAU, 0.70 mi)

    
    

12. Sweetwater Road from Paradise Valley Road to Jamacha Blvd (FAU, 0.10 mi)

    
    

13. Jamacha Blvd from Sweetwater Road to Grand Avenue (FAU, 0.79 mi)

    
    

14. Jamacha Blvd from Grand Avenue to Route 94 (FAU, 3.68 mi)

This route was defined in 1964.

Total milage: 12.90 mi. This route is unsiged.

1. El Toro Road in Laguna Beach from Route 133 to the Laguna Beach city limits (1.30 mi)

   
   

2. El Toro Road from the Laguna Beach city limits to the Laguna Beach urban limits (1.00 mi)

   
   

3. El Toro Road from the Laguna Beach urban limits to Trabuco Road (FAU, 3.50 mi)

   
   

4. El Toro Road from Trabuco Road to Live Oak Canyon Road (FAS, 5.86 mi)

   
   

5. Santiago Canyon Road from Live Oak Canyon Road to Peters Canyon Road (FAS, 11.50 mi)

   
   

6. Santiago Canyon Road from Peters Canyon Road to Newport Blvd (FAU, 1.39 mi)

   
   

7. Santiago Canyon Road in Orange from Newport Blvd to the Orange city limits (FAU, 0.81 mi)

   
   

8. Santiago Canyon Road from the Orange city limits to Kennymead Street (FAU, 0.35 mi)

   
   

9. Santiago Canyon Road in Orange from Kennymead Street to Meads Avenue (FAU, 0.34 mi)

   
   

10. Santiago Canyon Road from Meads Avenue to Orange Park Blvd (FAU, 0.27 mi)

    
    

11. Santiago Canyon Road in Orange from Orange Park Blvd to Hewes Street (FAU, 0.78 mi)

    
    

12. Villa Park Road from Hewes to Lemon Street (FAU, 0.65 mi)

    
    

13. Villa Park Road in Villa Park from Lemon Street to Wando Road (FAU, 0.75 mi)

    
    

14. Katella Avenue in Orange from Wanda Road to Route 55 (FAU, 0.55 mi)

This route was defined in 1970.

Total milage: 29.05 mi.

Live Oak Canyon Road from El Toro Road (County Route S18) to O'Neill Park (3.33 mi)

This route was defined in 1961.

1. Lompoc Casmalia Road from Route 1 to the Lompoc urban limits (FAU, 0.86 mi)

   
   

2. Lompoc Casmalia Road from the Lompoc urban limits to Vandenberg Road (FAS, 6.20 mi)

   
   

3. Vandenberg Road from Lompoc Casmalia Road to Route 1 (FAS, 6.22 mi)

This route was defined in 1967. In 1988, this became part of Route 1.

Total milage: 13.28 mi.

1. Genesee Avenue in San Diego from I-5 to N Torrey Pines Road (FAU, 0.80 mi)

   
   

2. Torrey Pines Road from Genesee Avenue to the Del Mar city limits (FAU, 3.98 mi)

   
   

3. Camino Del Mar in Del Mar from the Del Mar city limits to Jimmy Durante Blvd (FAU, 1.84 mi)

   
   

4. Camino Del Mar in Del Mar from Jimmy Durante Blvd to the Del Mar city limits (1.00 mi)

   
   

5. First Street and Old Highway 101 from the Del Mar city limits to the Carlsbad city limits (FAU, 8.10 mi)

   
   

6. Carlsbad Blvd in Carlsbad from the Carlsbad city limits to the Oceanside city limits (FAU, 6.17 mi)

   
   

7. Coast Highway (formerly Hill Street) in Oceanside from the Oceanside city limits to I-5 (FAU, 2.85 mi)

This route was defined in 1968. Portions of this route are the former routing of US 101. Portions are the former Carlsbad Freeway, built between 1950 and 1953. specifically, the portion between La Costa and Palomar Airport Road. There was also a Business US 101 in this area.

Some of the S-21 shields along old US 101 have been painted over with the California Poppy.

In September 2009, it was reported that the Encinas Creek bridge was to be replaced in January 2010. Built in 1913, the Encinas Creek Bridge handles southbound traffic along Carlsbad Boulevard and is located about a half mile south of the Palomar Airport Road intersection. The bridge has low, concrete railings and a graceful, arched look. The bridge's exposed reinforcing bars have become "heavily corroded," and one of its two lanes ---- the western one ---- was shut down more than a year ago after the bridge failed a state Department of Transportation safety inspection. Plans call for the bridge to be replaced with a span that's 26 feet narrower, but 15 feet longer and two feet higher. The new span will be built off-site and trucked to the area to reduce the amount of time that Carlsbad Boulevard will be closed.
[Based on an article in the North County Times, "CARLSBAD: City to take out Encinas Creek bridge starting in January", 2009-08-31]

Total milage: 24.74 mi. At one time, the entire route was designated as Business Route 5; presently, only the old Highway 101 portion is Business Route 5.

• California @ AARoads: US 101 (Andrew Fields)
• Carlsbad Freeway (Casey Cooper)
• Finding US 101 (Casey Cooper)

1. Montezuma Valley Road from San Felipe Road (County Route S2) to Palm Canyon Drive (FAS, 18.70 mi) [San Diego County]

   
   

2. Palm Canyon Drive from Montezuma Valley Road to Christmas Circle (FAS, 1.36 mi) [San Diego County]

   
   

3. Christmas Circle from Palm Canyon Drive to Palm Canyon Drive (FAS, 0.31 mi) [San Diego County]

   
   

4. Palm Canyon Drive from Christmas Circle to Peg Leg Road (FAS, 4.21 mi) [San Diego County]

   
   

5. Peg Leg Road from Palm Canyon Road to Borrego Salton Sea Way (FAS, 2.63 mi) [San Diego County]

   
   

6. Borrego Salton Sea Way from Peg Leg Road to the Imperial county line (FAS, 13.02 mi) [San Diego County]

   
   

7. Borrego Salton Sea Way from the San Diego county line to Lake View Court (FAS, 5.96 mi) [Imperial County]

   
   

8. Borrego Salton Sea Way from Lake View Court to Route 86 (FAS, 1.32 mi) [Imperial County]

This route was defined in 1968.

This route is part of the De Anza National Historic Trail.

Total milage: 47.51 mi. # There is no S23

1. Winterhaven Drive from I-8 to Picacho Road (FAS, 1.48 mi)

   
   

2. Picacho Road from Winterhaven Drive to Ross Road (FAS, 3.78 mi)

   
   

3. Ross Road from Picacho Road to Bard Road (FAS, 3.50 mi)

   
   

4. Bard Road from Ross Road to Colby Road (1.04 mi)

   
   

5. Colby Road from Bard Road to York Road (0.50 mi)

   
   

6. York Road from Colby Road to Mehring Road (1.53 mi)

   
   

7. Mehring Road from York Road to Imperial Road (1.95 mi)

   
   

8. Imperial Road from Mehring Road to the Imperial Dam (FAS, 5.94 mi)

This route was defined in 1970.

Total milage: 19.72 mi.

1. Chapman Avenue in Orange from Route 55 to McPherson Street (FAU, 0.53 mi)

   
   

2. Chapman Avenue from McPherson Street to Prospect Street (FAU, 0.20 mi)

   
   

3. Chapman Avenue in Orange from Prospect Street to Esplanade Street (FAU, 0.50 mi)

   
   

4. Chapman Avenue from Esplanade Street to the Orange city limits (FAU, 0.13 mi)

   
   

5. Chapman Avenue in Orange from the Orange city limits to Crawford Canyon Road (FAU, 0.69 mi)

   
   

6. Chapman Avenue from Crawford Canyon Road to Old Chapman Avenue (FAU, 0.32 mi)

   
   

7. Chapman Avenue in Orange from Old Chapman Avenue to the Orange city limits (FAU, 0.52 mi)

   
   

8. Chapman Avenue the Orange city limits to the Orange city limits (FAU, 0.35 mi)

   
   

9. Chapman Avenue in Orange from the Orange city limits to Newport Blvd (FAU, 0.52 mi)

   
   

10. Chapman Avenue from Newport Blvd to Santiago Canyon Road (FAU, 0.37 mi)

    
    

11. Chapman Avenue from Santiago Canyon Road to Irvine Park (0.87 mi)

This route was defined in 1970. It appears to have been one-time LRN 182.

Total milage: 5.00 mi.

1. Millar Avenue in Westmoreland from Route 86 to Dean Road (FAS, 0.21 mi)

   
   

2. Boarts Road from Dean Road to Kalin Road (FAS, 1.99 mi)

   
   

3. Kalin Road from Boarts Road to Rutherford Road (FAS, 0.50 mi)

   
   

4. Rutherford Road from Kalin Road to Route 115 (FAS, 7.50 mi)

This route was defined in 1970.

Total milage: 10.20 mi.

1. Keystone Road from Forrester Road (County Route S30) to McConnell Road (FAS, 8.05 mi)

   
   

2. McConnell Road from Keystone Road to Keystone Road (FAS, 0.25 mi)

   
   

3. Keystone Road from McConnell Road to Highline Road (County Route S33) (FAS, 10.22 mi)

This route was defined in 1970.

Total milage: 18.52 mi.

1. Worthington Road from Forrester Road (County Route S30) to the Imperial city limits (FAS, 2.30 mi)

   
   

2. Main Street in Imperial from Imperial city limits to Clark Road (FAS, 1.00 mi)

   
   

3. Worthington Road from Clark Road to Holt Road (County Route S32) (FAS, 10.70 mi)

This route was defined in 1970.

Total milage: 14.00 mi.

Drew Road from Route 98 to Evan Hewes Highway (County Route S80) in Seeley (FAS, 8.06 mi)

This route was defined in 1970. It is a former routing of Route 98.

1. Brockman Road from Route 98 to McCabe Road (FAS, 5.20 mi)

   
   

2. McCabe Road from Brockman Road to Forrester Road (FAS, 0.98 mi)

   
   

3. Forrester Road from McCabe Road to the Westmoreland city limits (FAS, 19.39 mi)

   
   

4. Center Street in Westmoreland (FAS, 0.76 mi)

   
   

5. Forrester Road from the Westmoreland city limits to Walker Road (FAS, 2.27 mi)

   
   

6. Walker Road from Forrester Road to Gentry Road (FAS, 0.40 mi)

   
   

7. Gentry Road from Walker Road to Eddins Road (FAS, 3.50 mi)

   
   

8. Eddins Road from Gentry Road to Lyerly Road (FAS, 5.11 mi)

   
   

9. Main Street in Calpatria from Lyerly Road to Route 111 (FAS, 0.81 mi)

This route was defined in 1970.

Total milage: 38.42 mi.

1. Dogwood Road from Route 98 to the El Centro urban limits (FAS, 6.44 mi)

   
   

2. Dogwood Road from the El Centro urban limits to Ross Road (FAU, 0.60 mi)

   
   

3. Dogwood Road in El Centro from Ross Road to Villa Road (FAU, 1.56 mi)

   
   

4. Dogwood Road from Villa Road to the El Centro urban limits (FAU, 0.10 mi)

   
   

5. Dogwood Road from the El Centro urban limits to the Brawley urban limits (FAS, 10.91 mi)

   
   

6. Dogwood Road from the Brawley urban limits to the Brawley city limits (FAU, 0.39 mi)

   
   

7. Imperial Avenue in Brawley from the Brawley city limits to Plaza Street (FAU, 0.58 mi)

   
   

8. Plaza Street in Brawley from Imperial Avenue to Main Street (Route 78) (FAU, 0.10 mi)

This route was defined in 1970.

Total milage: 20.68 mi.

1. Orchard Road from I-8 to the Holtville city limits (FAS, 2.35 mi)

   
   

2. Cedar Avenue in Holtville from the Holtville city limits to Route 115 (FAS, 0.27 mi)

   
   

3. Holt Avenue in Holt from Route 115 to Ninth Street (FAS, 0.53 mi)

   
   

4. Holt Road from Ninth Street to Gonder Road (FAS, 9.56 mi)

   
   

5. Gonder Road from Holt Road to Butters Road (FAS, 0.55 mi)

   
   

6. Butters Road from Gonder Road to Route 78 (FAS, 1.55 mi)

This route was defined in 1970.

Total milage: 14.81 mi.

1. Bonesteele Road from Route 98 to Kumberg Road (1.00 mi)

   
   

2. Kumberg Road from Bonesteele Road to Miller Road (0.43 mi)

   
   

3. Miller Road from Kumberg Road to Route 115 (5.45 mi)

   
   

4. Miller Road from Route 115 to Kavanaugh Road (FAS, 1.61 mi)

   
   

5. Kavanaugh Road from Miller Road to Highline Road (FAS, 0.50 mi)

   
   

6. Highline Road from Kavanaugh Road to Gonder Road (FAS, 9.83 mi)

   
   

7. Gonder Road from Highline Road to Green Road (FAS, 0.72 mi)

   
   

8. Green Road from Gonder Road to Route 78 (FAS, 1.50 mi)

This route was defined in 1970.

Total milage: 21.04 mi.

1. Ogilby Road from I-8 to County Road 3M04 (FAS, 4.11 mi)

   
   

2. Ogilby Road from County Road 2M01A to Route 78 (FAS, 21.12 mi)

This route was defined in 1973.

Total milage: 25.23 mi.

This is the present routing of Route 78 between Midway Well and Route 115.

1. Evan Hewes Highway from Imperial Highway (County Route S2) to Austin Road (FAS, 24.42 mi)

   
   

2. Evan Hewes Highway from Austin Road to the El Centro city limits (FAU, 1.20 mi)

   
   

3. Adams Avenue in El Centro from the El Centro city limits to Imperial Avenue (Route 86) (FAU, 0.27 mi)

   
   

4. Main Street in El Centro from 4th Street (Route 86) to Dogwood Road (CR S31) (FAU, 0.98 mi)

   
   

5. Evan Hewes Highway from Dogwood Road (County Route S31) to Cooley Road (FAU, 1.03 mi)

   
   

6. Evan Hewes Highway from Cooley Road to Route 115 (FAS, 6.56 mi)

This is a former routing of US 80. This route was defined in 1973.

• California @ AARoads: Historic US 80
• Casey Cooper's Finding US 80

Total milage: 34.46 mi.