Interstate 8 - Annual Average Daily Traffic - Interstate Travel Information
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Interstate 8 Annual Average Daily Traffic (AADT)

State Mileage Cities Junctions
California 169.92 San Diego, El Centro Interstate 5, Interstate 805, Interstate 15
Arizona 178.33 Yuma, Casa Grande Interstate 10
TOTAL 348.25
Source: October 31, 2002 Interstate Route Log and Finders List

Interstate 8 California Annual Average Daily Traffic (AADT)

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County Begin Milepost Location To: AADT
San Diego 0.41 Sunset Cliffs Boulevard to I-8 eastbound - San Diego Nimitz Boulevard - San Diego 22,400
San Diego 0.47 Nimitz Blvd. - San Diego Begin Freeway 44,000
San Diego 0.71 Begin Freeway Midway Drive - San Diego 44,000
San Diego 1.21 Midway Drive - San Diego I-5 & CA 209 - San Diego 101,000
San Diego 2.38 I-5 & CA 209 - San Diego Morena Boulevard - S.D. 197,000
San Diego 0.36 Morena Boulevard - S.D. Presidio Park - San Diego 208,000
San Diego 0.95 Presidio Park - San Diego Hotel Circle Drive - S.D. 222,000
San Diego 2.23 Hotel Circle Drive - S.D. California 163 - San Diego 227,000
San Diego 2.41 California 163 - San Diego Mission Center Rd. - S.D. 217,000
San Diego 3.04 Mission Center Rd. - S.D. Texas Street - San Diego 229,000
San Diego 3.90 Texas Street - San Diego Interstate 805 - S.D. 203,000
San Diego 4.38 Interstate 805 - S.D. Interstate 15 - S.D. 259,000
San Diego 5.64 Interstate 15 - S.D. Fairmont Avenue - S.D. 226,000
San Diego 6.27 Fairmont Avenue - S.D. Waring Road - San Diego 248,000
San Diego 7.06 Waring Road - San Diego College Avenue - S.D. 237,000
San Diego 8.34 College Avenue - S.D. Lake Murray Blvd. - La Mesa 214,000
San Diego 9.59 Lake Murray Blvd. - La Mesa Fletcher Parkway - La Mesa 197,000
San Diego 10.57 Fletcher Parkway - La Mesa Spring Street - La Mesa 181,000
San Diego 10.97 Spring Street - La Mesa El Cajon Blvd. - La Mesa 170,000
San Diego 11.10 El Cajon Blvd. - La Mesa Jackson Drive - La Mesa 193,000
San Diego 11.76 Jackson Drive - La Mesa Calfornia 125 - La Mesa 184,000
San Diego 12.24 Calfornia 125 - La Mesa Severin & Fuertre Drives - La Mesa 218,000
San Diego 12.65 Severin & Fuertre Drives - La Mesa El Cajon Boulevard - El Cajon 225,000
San Diego 13.66 El Cajon Blvd. - El Cajon West Main Street - El Cajon 189,000
San Diego 14.59 West Main Street - El Cajon Johnson Avenue - El Cajon 184,000
San Diego 15.30 Johnson Avenue - El Cajon California 67 north Magnolia Avenue - El Cajon 166,000
San Diego 15.80 California 67 north Magnolia Avenue - El Cajon Mollison Avenue - El Cajon 136,000
San Diego 16.47 Mollison Avenue - El Cajon California 54 south 2nd Street - El Cajon 121,000
San Diego 17.36 California 54 south 2nd Street - El Cajon East Main Street - El Cajon 87,000
San Diego 17.83 East Main Street - El Cajon Greenfield Drive - El Cajon 96,000
San Diego 18.73 Greenfield Drive - El Cajon Los Coches Rd. interchange 84,000
San Diego 21.51 Los Coches Rd. interchange Lake Jennings Park Road 73,000
San Diego 21.82 Lake Jennings Park Road Harbison Canyon & Dunbar Lanes 61,000
San Diego 25.69 Harbison Canyon & Dunbar Lanes Tavern Road 54,000
San Diego 28.46 Tavern Road West Willows Road 38,500
San Diego 31.34 West Willows Road East Willows Road 26,000
San Diego 34.33 East Willows Road California 79 north Japatul Valley Road 26,500
San Diego 37.83 California 79 north Japatul Valley Road Pine Valley Road 20,800
San Diego 43.53 Pine Valley Road Sunrise Hwy. (Laguna Jct.) 18,300
San Diego 44.93 Sunrise Hwy. (Laguna Jct.) Buckman Springs Road 17,500
San Diego 48.84 Buckman Springs Road Cameron Road 14,600
San Diego 51.98 Cameron Road Crestwood Road 14,600
San Diego 61.15 Crestwood Road CA 94 south Ribbonwood Rd. 14,400
San Diego 65.90 CA 94 south Ribbonwood Rd Carrizo Gorge 14,400
San Diego 73.95 Carrizo Gorge Inkopah 14,200
San Diego 77.58 Inkopah Imperial County line (77.77) 14,300
Imperial 0.00 San Diego County line Mountain Springs Road 14,300
Imperial 3.09 Mountain Springs Road California 98 14,300
Imperial 10.01 California 98 Imperial Hwy. - Ocotillo 12,500
Imperial 11.92 Imperial Hwy. - Ocotillo Dunaway Road 12,300
Imperial 23.48 Dunaway Road Drew Road 12,400
Imperial 29.93 Drew Road Forrester Road 14,300
Imperial 33.99 Forrester Road Imperial Avenue - El Centro 18,200
Imperial 36.97 Imperial Avenue - El Centro CA 86 4th Street - El Centro 29,500
Imperial 37.97 CA 86 4th Street - El Centro Dogwood Road 32,000
Imperial 38.96 Dogwood Road California 111 30,500
Imperial 40.94 California 111 Bowker Road 13,000
Imperial 42.54 Bowker Road Orchard Road 11,700
Imperial 47.78 Orchard Road Bonds Corner Road 10,300
Imperial 50.49 Bonds Corner Road California 115 north 10,000
Imperial 53.50 California 115 north East junction California 98 west - Midway Wells 10,500
Imperial 65.75 East junction California 98 west - Midway Wells Brock Center Road - Experimental Farm 11,800
Imperial 68.83 Brock Center Road - Experimental Farm Gordon Well Road 11,700
Imperial 73.48 Gordon Well Road Ogilby Road 11,600
Imperial 83.82 Ogilby Road Sidewinder Road 11,900
Imperial 88.70 Sidewinder Road CA 186 south Algodones Rd. 11,600
Imperial 90.74 CA 186 south Algodones Rd. Winterhaven Drive 15,600
Imperial 94.98 Winterhaven Drive 4th Avenue 15,400
Imperial 96.55 4th Avenue AZ state line (96.99) 13,600
Source: Caltrans, Traffic Operations Program - Traffic and Vehicle Data Systems [2002]

Interstate 8 Arizona Annual Average Daily Traffic (AADT)

County From: To: AADT Composite
Yuma CA state line Exit 1/Giss Parkway 28,766
Yuma Exit 1/Giss Parkway Exit 2/U.S. 95 18,692
Yuma Exit 2/U.S. 95 Exit 3/Arizona 280/Ave. 3E 32,675*
Yuma Exit 3/Arizona 280/Ave. 3E Exit 7/Araby Road 27,821
Yuma Exit 7/Araby Road Exit 9/BL 8/East Yuma 30,144
Yuma Exit 9/BL 8/East Yuma Exit 12/Fortuna Road 34,463
Yuma Exit 12/Fortuna Road Exit 14/Foothills Boulevard 23,162
Yuma Exit 14/Foothills Boulevard Exit 21/Dome Valley Road 9,544
Yuma Exit 21/Dome Valley Road Exit 30/Wellton 7,560
Yuma Exit 30/Wellton Exit 37/Roll Road 9,270
Yuma Exit 37/Roll Road Exit 42/Tacna 5,578
Yuma Exit 42/Tacna Exit 54/Mohawk Avenue 6,054
Yuma Exit 54/Mohawk Avenue Exit 67/Dateland 5,708
Yuma Exit 67/Dateland Exit 73/Aztec Road 7,570
Yuma Exit 73/Aztec Road Exit 78/Spot Road 9,586
Yuma/Maricopa Exit 78/Spot Road Exit 87/Sentinel 7,490
Maricopa Exit 87/Sentinel Exit 102/Painted Rock 7,887
Maricopa Exit 102/Painted Rock Exit 106/Paloma Road 7,483
Maricopa Exit 106/Paloma Road Exit 111/Citrus Valley 5,541
Maricopa Exit 111/Citrus Valley Exit 115/BL 8/West Gila Bend 8,466
Maricopa Exit 115/BL 8/West Gila Bend Exit 116/Arizona 85 3,960
Maricopa Exit 116/Arizona 85 Exit 119/BL 8/East Gila Bend 2,280
Maricopa Exit 119/BL 8/East Gila Bend Exit 140/Freeman Road 6,988
Maricopa Exit 140/Freeman Road Exit 144/Vekol Road 6,422
Maricopa/Pinal Exit 144/Vekol Road Exit 151/AZ 84/Maricopa Road 6,064
Pinal Exit 151/AZ 84/Maricopa Road Exit 161/Stanfield Road 5,496
Pinal Exit 161/Stanfield Road Exit 167/Montgomery Road 6,406
Pinal Exit 167/Montgomery Road Exit 169/Bianco Road 5,887
Pinal Exit 169/Bianco Road Exit 172/Thornton Road 5,836
Pinal Exit 172/Thornton Road Exit 174/Trekell Road 6,384
Pinal Exit 174/Trekell Road Interstate 10 6,900
Source: 2001 Arizona Interstate Annual Average Daily Traffic (AZDOT)
* - 2000 AADT

Page Updated July 12, 2003.