Interstate 80 in California

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Interstate 80
Main route of the Interstate Highway System
Defined by S&HC § 380, maintained by Caltrans
Length: 199.24 mi[1] (320.65 km)
Formed: August 7, 1947 by FHWA[2]
July 1, 1964 by Caltrans[3]
West end: US 101 in San Francisco
Major
junctions:		 I-580 / I-880 in Oakland
I-505 in Vacaville
I-5 in Sacramento
SR 49 in Auburn
SR 89 in Truckee
East end: I-80 towards Reno, NV
State highways in California (list - pre-1964)
County routes in California (list)
< SR 79 SR 82 >
History - Unconstructed - Deleted - Freeway - Scenic

In the U.S. state of California, Interstate 80, a major east-west route of the Interstate Highway System, has its western terminus in San Francisco, California, United States. From San Francisco it heads east across the Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge before turning back northeast and east through Sacramento Valley. I-80 then goes over Sierra Nevada mountain range and crosses into Nevada through Reno,Salt Lake City and beyond.

This route is part of the California Freeway and Expressway System[4].

Contents

[edit] Route description

[edit] West end in San Francisco

The western terminus of Interstate 80 in San Francisco, starting from US 101.
The western terminus of Interstate 80 in San Francisco, starting from US 101.

According to signage, I-80 begins at its intersection with U.S. Route 101 in San Francisco. However, the San Francisco Skyway is not part of the Interstate Highway System; the Interstate actually begins at the west end of the Bay Bridge, at the ramps formerly connecting to the Embarcadero Freeway. Thus the first 1.20 miles (1.93 km) of the signed Interstate are not an actual Interstate.[5][6]

When I-80 was first approved, it was to head north on the Central Freeway (US 101) and west on the never-built Panhandle Freeway, ending at planned I-280 (State Route 1) in Golden Gate Park. A January 1968 amendment moved I-280 to its present alignment, removed Interstate 480, and truncated I-80 to the Embarcadero Freeway (then I-280, formerly I-480).[2] These changes were made on the state level later that year, but Route 80 was only truncated to US 101. (The Central Freeway remained part of US 101, and the Panhandle Freeway became State Route 241. The Panhandle Freeway was later cancelled in the wake of the Freeway Revolts, and the State Route 241 designation has since been reassigned to an unrelated stretch of highway in Orange County) The San Francisco Skyway, which had already been signed as part of I-80, has remained a de facto section of Interstate 80 to the present day and remains listed as part of Route 80 in California.

Main article: Eastshore Freeway

The Eastshore Freeway is a segment of Interstate Highways 80 and 580 which runs along the northeast shoreline of San Francisco Bay in northern California. It begins at the Carquinez Bridge and ends at the MacArthur Maze interchange just east of the western end of the San Francisco-Oakland Bay Bridge. Interstate 580 joins the Eastshore Freeway at an interchange in Albany.

[edit] Sacramento portion

Main article: Interstate 880 (California)
Main article: Interstate 80 Business (Sacramento, California)

Legislative Route 242 was defined in 1957, connecting pre-1964 Legislative Route 6 west of Sacramento to pre-1964 Legislative Route 3 northeast of Sacramento.[7] Interstate 880, a bypass of I-80, was approved along Legislative Route 242 by the American Association of State Highway Officials on November 10, 1958.[8] The Route 880 designation was adopted by the state in the 1964 renumbering; the bypass was completed in 1972.

Interstate 80 has run north of Sacramento on the Beltline Freeway which was originally Interstate 880, a bypass freeway. The I-80 routing alignment was moved from a route through Sacramento, now Interstate 80 Business, after the proposed Interstate 80 replacement of the North Sacramento Freeway was cancelled. The Beltline Freeway runs northeast from the junction of I-80 and I-80 Business (U.S. Route 50 there) in West Sacramento across Interstate 5 to its junction northeast of Sacramento with I-80 Business (which is State Route 51). State Route 244 heads east as a short freeway spur) from that interchange.

[edit] Sierra Nevada portion

Major cities
Bolded cities are officially-designated control cities for signs
I-80 in the Sierra Nevada near the Yuba Gap exit
I-80 in the Sierra Nevada near the Yuba Gap exit

Crossing the Sierra Nevada, I-80 regularly gets snow at higher elevations from fall to spring. Caltrans sometimes requires vehicles to use snow tires, snow chains or other traction devices in the mountains during and after snowstorms.[9] Checkpoints are often utilized to enforce chain restrictions prior to entering the Sierra Nevada.

I-80 crosses the Sierra Nevada crest at the Donner Summit in Nevada County at milepost(?) at the elevation 2,206 metres (7,240 ft) westbound and 2,203 metres (7,230 ft) eastbound.[10] The pass is generally open year-round; it is plowed in winter, but may temporarily close during the worst snowstorms. The older route over Donner Pass is about two miles south.

[edit] Other names

Interstate 80 has the following names, as designated by various state laws:[11]

  • Alan S. Hart Freeway: from the Sacramento/Placer County line to the Nevada state line.
  • Dutch Flat and Donner Lake Wagon Road: from Emigrant Gap to Donner Lake.
  • Lincoln Highway: from Sacramento to Reno.
  • Kent D. Pursel Memorial Freeway: from the Bay Bridge to the Alameda/Contra Costa County line.
  • Linus F. Claeys Freeway: from SR 4 to the Carquinez Bridge.
  • Dwight D. Eisenhower Highway: for its entire length.
  • East-West Blue Star Memorial Highway: for its entire length.

[edit] Exit list

Note: Except where prefixed with a letter, postmiles were measured in 1964, based on the alignment as it existed at that time, and do not necessarily reflect current mileage. The numbers reset at some county lines; the start and end postmiles in each county are given in the county column.
County Location Postmile
[12][13][14]		 #[15] Destinations Notes
San Francisco
SF 3.84-8.85		 3.84 1 US 101 (Bayshore Freeway, Central Freeway) – San Jose, Golden Gate Bridge Westbound exit and eastbound entrance; signed as exits 1A (south) and 1B (north)
4.40 1C Ninth Street – Civic Center Westbound exit and eastbound entrance
See James Lick Freeway
San Francisco-Oakland Bay Bridge (west span) over San Francisco Bay
4A Treasure Island Westbound exit is via exit 4
7.72 4B Yerba Buena Island Signed as exit 4 westbound
San Francisco-Oakland Bay Bridge (east span) over San Francisco Bay
Alameda
ALA 0.00-8.036		 Oakland
2.51 8A West Grand Avenue, Maritime Street
2.80 8A I-880 south – Alameda, San Jose Westbound exit is part of exit 8B
2.80 8B I-580 east (MacArthur Freeway) to SR 24 – Downtown Oakland, Hayward, Stockton West end of I-580 overlap
See Eastshore Freeway
Solano
SOL 0.00-R44.72		 Vallejo Carquinez Bridge over the Carquinez Strait
1.14 29A SR 29 (Sonoma Boulevard) Eastbound exit and westbound entrance
29A Maritime Academy Drive Westbound exit and entrance
29B Sequoia Avenue Eastbound exit only
1.78 29C Magazine Street Signed as exit 29B westbound
2.23 30A I-780 to I-680 / Curtola Parkway – Martinez, Benicia
2.44 30B Frontage road (to Benicia Road) Eastbound exit only; former SR 141
2.88 30C Georgia Street – Central Vallejo Signed as exit 30B westbound
3.23 31A Springs Road, Solano Avenue
3.49 31B Tennessee Street – Mare Island
4.43 32A Redwood Parkway, Redwood Street Signed as exits 32A (east) and 32B (west) eastbound
5.63 33 SR 37 west / Auto Mall Columbus Parkway – Napa, San Rafael, Novato Signed as exits 33A (Auto Mall Columbus Parkway) and 33B (SR 37) westbound
8.10 36 American Canyon Road, Hiddenbrooke Parkway
Fairfield R11.39 39A Red Top Road Signed as exit 39 eastbound
R11.98 39B SR 12 west – Napa, Sonoma West end of SR 12 overlap; eastbound exit is via exit 39
12.74 40 Green Valley Road Westbound exit is part of exit 41
12.84 40 I-680 – Benicia, Martinez, San Jose
13.49 41 Suisun Valley Road, Pittman Road
15.82 43 SR 12 east – Rio Vista, Suisun City East end of SR 12 overlap; westbound exit is via exit 43
16.17 44A Abernathy Road Signed as exit 43 westbound
17.20 44B West Texas Street, Rockville Road – Fairfield Signed as exit 44 westbound
17.92 45 Travis Boulevard
19.18 47 Waterman Boulevard, Air Base Parkway – Travis AFB Signed as exits 47A (Air Base Parkway) and 47B (Waterman Boulevard) westbound
20.93 48 North Texas Street – Fairfield
23.13 51A Lagoon Valley Road, Cherry Glen Road
Vacaville 23.96 51B Peña Adobe Road
52 Cherry Glen Road Westbound exit only
R25.31 53 Alamo Drive, Merchant Street
R26.01 54A Davis Street
R26.46 54B Peabody Road, Mason Street – Elmira
R27.24 55 Monte Vista Avenue, Allison Drive, Nut Tree Parkway
R28.36 56 I-505 north – Winters, Redding
29.86 57 Leisure Town Road, Vaca Valley Parkway
31.36 59 Meridian Road, Weber Road
32.62 60 Midway Road, Lewis Road
Dixon 35.55 63 Dixon Avenue, West A Street – Dixon
36.90 64 Pitt School Road
38.21 66A SR 113 south (First Street) / Currey Road – Dixon West end of SR 113 overlap; signed as exit 66 eastbound
66B Milk Farm Road Westbound exit only
39.74 67 Pedrick Road (CR E7)
41.30 69 Kidwell Road
42.67 70 SR 113 north (Vic Fazio Highway) – Woodland East end of SR 113 overlap
43.50 71 UC Davis (Old Davis Road)
Yolo
YOL 0.00-R11.72		 Davis 0.24 72 Richards Boulevard – Downtown Davis Signed as exits 72A (south) and 72B (north) westbound
0.84 73 Olive Drive Westbound exit only
2.68 75 Mace Boulevard (CR E6)
5.78 78 Road 32A, East Chiles Road
Yolo Causeway over the Yolo Bypass
West Sacramento 9.18 81 West Capitol Avenue, Enterprise Boulevard – West Sacramento
R9.91 82 I-80 Bus. east / US 50 east (Capital City Freeway) – Sacramento, South Lake Tahoe
R11.23 83 Reed Avenue (SR 84) – West Sacramento
Sacramento
M0.00-18.00		 Sacramento M1.36 85 West El Camino Avenue
M2.55 86 I-5 to SR 99 – Sacramento, Los Angeles, Redding
M3.64 88 Truxel Road
M4.98 89 Northgate Boulevard
M6.12 90 Norwood Avenue
M7.63 91 Raley Boulevard, Marysville Boulevard – Del Paso Heights
M8.67 92 Winters Street
M9.40 93 Longview Drive
94 Light Rail Stations (Roseville Road, Watt/I-80 West, and Watt/I-80) Westbound exit and eastbound entrance; also accessible as part of exit 93 westbound
M10.36 94A Watt Avenue Westbound exit is part of exit 95
R10.99 94B Auburn Boulevard (SR 244) Westbound exit is part of exit 95
R10.99 95 I-80 Bus. west (Capital City Freeway) to SR 99 south – Sacramento Westbound exit and eastbound entrance; eastbound exit is part of exit 94A
12.48 96 Madison Avenue
14.45 98 Greenback Lane, Elkhorn Boulevard (CR E14)
Citrus Heights 16.69 100 Antelope Road
Placer
PLA 0.00-R58.71		 Roseville 0.27 102 Riverside Avenue, Auburn Boulevard – Roseville, Citrus Heights Former SR 65
1.98 103 Douglas Boulevard, Sunrise Avenue (CR E2) Signed as exits 103A (east) and 103B (west) eastbound
3.07 105A Atlantic Street, Eureka Road Signed as exits 105A (Eureka Road) and 105B (Atlantic Street) westbound
3.66 105B Taylor Road, Pacific Street Westbound exit is via exit 105A
4.16 106 SR 65 – Lincoln, Marysville
Rocklin 6.06 108 Rocklin Road
7.42 109 CR E3 (Sierra College Boulevard)
Loomis 8.72 110 Horseshoe Bar Road – Loomis
10.35 112 Penryn Road – Penryn
13.81 115 Newcastle Road – Newcastle
14.30 116 SR 193 north – Lincoln West end of SR 193 overlap
Auburn 16.85 118 Ophir Road Westbound exit and eastbound entrance
17.29 119A Maple Street, Nevada Street – Auburn
17.54 119B SR 49 (SR 193 south) – Grass Valley, Placerville East end of SR 193 overlap
17.83 119C Elm Avenue
R18.91 120 Lincoln Way, Russell Road No eastbound entrance
R19.47 121 Auburn Ravine Road – Foresthill
R20.13 122 Bowman
R21.13 123 Bell Road
R22.21 124 Dry Creek Road
R23.43 125 Clipper Gap, Meadow Vista
R26.21 128 Applegate
27.39 129 Heather Glen
28.59 130 West Paoli Lane
29.32 131 Weimar Cross Road
Colfax 31.79 133 Canyon Way, Placer Hills Road
33.13 135 SR 174 – Colfax, Grass Valley
37.78 139 Rollins Lake Road, Magra Road
38.35 140 Secret Town Road, Magra Road
41.37 143 Magra Road – Gold Run
42.19 144 Gold Run Westbound exit and eastbound entrance
43.17 145 Dutch Flat
44.75 146 Alta
46.31 148A Crystal Springs
46.94 148B Baxter
49.00 150 Drum Forebay Road
53.36 155 Blue Canyon
54.81 156 Nyack Road
R56.06 158A Emigrant Gap Signed as exit 158 westbound
158B Laing Road Eastbound exit only
Nevada
NEV R58.71-R62.75		 R58.84 160 Yuba Gap
R59.54 161 SR 20 west – Nevada City, Grass Valley
R62.03 164 Eagle Lakes Road
Placer
PLA R62.75-69.77		 R63.52 165 Cisco Grove (Cisco Road)
166 Big Bend Eastbound exit only
R66.20 168 Rainbow Road – Big Bend
69.23 171 Kingvale
Nevada
0.00-31.78		 R2.48 174 Soda Springs, Norden
R5.07 176 Boreal Ridge Road – Castle Peak
R9.01 180 Donner Lake (Donner Lake Road)
13.21 184 Donner Pass Road
14.16 185 SR 89 south – Tahoe City, Lake Tahoe, Squaw Valley West end of SR 89 overlap
Truckee 14.97 186 Central Truckee No eastbound entrance
16.29 188A Truckee Eastbound exit and westbound entrance
16.60 188B SR 89 north / SR 267 south – Sierraville, Lake Tahoe East end of SR 89 overlap; signed as exit 188 westbound
18.28 190 Overland Trail
22.41 194 Hirschdale Road
27.29 199 Floriston
29.49 201 Farad
Sierra
SIE 0.00-1.59		 1.59 Nevada state line

[edit] References

A mural on the I-80 San Pablo Avenue (CA SR 123) Overpass
A mural on the I-80 San Pablo Avenue (CA SR 123) Overpass
  1. ^ Federal Highway Administration Route Log and Finder List, Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of October 31, 2002
  2. ^ a b California Highways: Interstate Highway Types and the History of California's Interstates
  3. ^ California Highways: Interstate 80
  4. ^ CA Codes (shc:250-257)
  5. ^ Federal Highway Administration, National Highway System: San Francisco--Oakland CA, April 2004
  6. ^ California Department of Transportation, California Road System (CRS) Maps, accessed November 2007
  7. ^ California Highways: Legislative Route 242
  8. ^ California Highways: Interstate Highway Types and the History of California's Interstates
  9. ^ Caltrans (2007). Chain Controls. Retrieved on 2008-01-04.
  10. ^ Elevation and Location of Summits and Passes in California
  11. ^ 2006 Named Freeways, Highways, Structures and Other Appurtenances in California. Caltrans, 116. Retrieved on 2007-10-13. 
  12. ^ California Department of Transportation, State Truck Route List (XLS file), accessed February 2008
  13. ^ California Department of Transportation, Log of Bridges on State Highways, July 2007
  14. ^ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
  15. ^ California Department of Transportation, California Numbered Exit Uniform System, I-80, accessed February 2008

[edit] External links


Interstate 80
Previous state:
Terminus		 California Next state:
Nevada