Interstate 280 (California) - Exit List

Exit List

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, and do not necessarily reflect current mileage. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County Location Postmile
Exit
Destinations Notes
Santa Clara
San Jose R0.00 I-680 north – Sacramento Continuation beyond US 101
R0.00 US 101 (Bayshore Freeway) – San Francisco, Los Angeles Southbound exit and northbound entrance
R0.37 1A McLaughlin Avenue Southbound exit and northbound entrance
R1.29 1B 11th Street, 10th Street Signed as exit 1 northbound
R1.99 2A To SR 82 / 7th Street, Virginia Street Signed as exit 2 northbound
2B Almaden Boulevard, Vine Street Southbound exit and northbound entrance
R2.52 3A SR 87 (Guadalupe Parkway)
R2.88 3B Bird Avenue
R3.76 4 Race Street, Southwest Expressway Northbound exit and southbound entrance
R3.99 4 Meridian Avenue Southbound exit and northbound entrance
L4.66 5A Leigh Avenue, Bascom Avenue
L5.41 5B I-880 north / SR 17 south – Oakland, Santa Cruz Signed as exits 5B (south) and 5C (north) northbound
4.57 6 Winchester Boulevard – Campbell Southbound exit and northbound entrance
5.95 7 Saratoga Avenue – Saratoga
7.12–
7.39
9 Lawrence Expressway (CR G2), Stevens Creek Boulevard
Cupertino 8.38 10 Wolfe Road
9.43 11 De Anza Boulevard
10.74 12 SR 85 – Mountain View, Gilroy Signed as exits 12A (north) and 12B (south)
Los Altos 11.45 13 Foothill Expressway, Grant Road
14.10 15 Magdalena Avenue
Los Altos Hills 15.05 16 El Monte Road, Moody Road
18.38 20 Page Mill Road, Arastradero Road – Palo Alto
20.61 22 Alpine Road – Portola Valley
San Mateo
R1.61 24 Sand Hill Road – Menlo Park
Woodside R3.34 25 SR 84 (Woodside Road) – Woodside
R4.65 27 Farm Hill Boulevard
R6.60 Canada Road No exit ramps
6.65 29 Edgewood Road
10.87 33 SR 92 – San Mateo, Hayward, Half Moon Bay Southbound exit to SR 92 west is via exit 34
R12.32 34 SR 35 south / Bunker Hill Drive South end of SR 35 overlap
Hillsborough R14.22 36 Black Mountain Road, Hayne Road
R17.16 39 Trousdale Drive – Burlingame
Millbrae R17.92 40 Millbrae Avenue Northbound exit and southbound entrance
R18.52 41 Larkspur Drive, Millbrae Avenue Southbound exit and northbound entrance
San Bruno R19.28 41 SR 35 north (Skyline Boulevard) – Pacifica North end of SR 35 overlap; northbound exit and southbound entrance
R20.22 42 Crystal Springs Road Southbound exit and northbound entrance; former SR 117
R20.75 43A San Bruno Avenue Signed as exit 43B southbound
R21.02 43B I-380 east to US 101 – San Francisco International Airport Signed as exit 43A southbound
R21.31 43A Sneath Lane Signed as exit 43B southbound
South San Francisco R22.04 44 Avalon Drive Northbound exit and southbound entrance; former SR 117
R22.62 45 Westborough Boulevard Northbound exit is via exit 44
Daly City R24.20 46 Hickey Boulevard – Colma, South San Francisco
R24.63 47A Serramonte Boulevard Southbound exit and northbound entrance
R25.28 47B SR 1 south – Pacifica South end of SR 1 overlap; signed as exit 47 northbound
R25.78 48 Eastmoor Avenue, Mission Street Signed as exit 47 northbound
M27.17 49A Daly City, Westlake District (Junipero Serra Boulevard) Signed as exit 49 southbound
M27.17 49B SR 1 north (19th Avenue) – Golden Gate Bridge North end of SR 1 overlap; northbound left exit and southbound entrance
San Francisco
R0.74 50 SR 82 to SR 1 north / Mission Street – Daly City Southbound exit and northbound entrance
R1.77 51 Geneva Avenue, Ocean Avenue
R2.70 52 Monterey Boulevard Southbound exit and northbound entrance
R2.70 52 San Jose Avenue Northbound exit and southbound entrance
R3.28 53 Alemany Boulevard, Mission Street
R4.34 54A US 101 south (James Lick Freeway) – San Jose Signed as exit 54 southbound
R4.34 54B US 101 north (James Lick Freeway) – San Francisco Civic Center, Bay Bridge Northbound exit and southbound entrance
R5.62 55 Cesar Chavez Street, 25th Street
R6.60 56 Mariposa Street, 18th Street
T7.54 57 Sixth Street Northbound exit and southbound entrance
T7.26 King Street Northbound exit and southbound entrance
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  • Concurrency terminus
  • Closed/Former
  • HOV
  • Incomplete access
  • ETC only
  • Unopened

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