Everything about California State Highway 84 totally explained
State Route 84 is a split-section
California State Highway consisting of two sections. The first section is an east-west
arterial road running from
San Gregorio to
Menlo Park, across the
Dumbarton Bridge through
Fremont and ending at
I-580 in
Livermore. The route overlaps the
freeway segment of U.S. 101 between Woodside Road in Redwood City and Marsh Road in Menlo Park. The segment between Marsh Road and the Dumbarton Bridge has been upgraded to an
expressway and is known as the Bayfront Expressway. The segment from the western end of the Dumbarton Bridge to the interchange with I-880 has been upgraded to a freeway.
The other section is a north-west arterial road that begins at
Route 12 in
Rio Vista, passes through
Ryer Island (where it connects to
Route 220), and ends at the
Interstate 80 interchange in
West Sacramento. However, plans are underway to turn maintenance of SR 84 through West Sacramento to that city.
A ferry provides the crossing over Cache Slough from Rio Vista to Ryer Island. The ferry, a diesel-powered boat operated by
Caltrans, is in operation twenty-four hours per day and charges no toll.
Route 84 is legally defined to continue from I-580 to
Route 4 in
Antioch, but there are currently no plans in place to bridge the gap at this time. A plan to build a $600 million
toll road called the
Mid-State Tollway along the proposed route was suspended in 2001 due to local opposition.
This route is part of the
California Freeway and Expressway System and is eligible for the
State Scenic Highway System.
Route description
Major cities
Bolded cities are officially-designated control cities for signs |
|
Major intersections
» Note: Except where prefixed with a letter, postmiles were measured in 1964, based on the alignment as it existed at that time, and don't 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
|
# |
Destinations |
Notes |
San Mateo
SM 0.00-R30.15 |
San Gregorio |
0.00 |
|
|
|
| Woodside |
14.95 |
|
|
|
| 21.54 |
|
|
Interchange |
| Redwood City |
24.70 |
|
|
Interchange |
25.72
101 5.39 |
|
|
South end of US 101 overlap; interchange |
| Menlo Park |
101 3.59
R25.81 |
|
|
North end of US 101 overlap; interchange |
| R27.66 |
|
Willow Road (SR 114) – Menlo Park |
|
| R28.19 |
|
University Avenue (SR 109) – East Palo Alto |
|
| South end of freeway |
| Dumbarton Bridge over San Francisco Bay |
Alameda
ALA R0.00-R28.63 |
Newark |
| R3.75 |
36 |
Thornton Avenue, Paseo Padre Parkway |
|
| R4.88 |
37 |
Newark Boulevard, Ardenwood Boulevard |
|
| North end of freeway |
R6.01
880 10.30 |
|
|
South end of I-880 overlap |
| Fremont |
880 8.84
6.92 |
|
|
North end of I-880 overlap; interchange |
10.82
238 3.31 |
|
|
South end of SR 238 overlap |
238 3.64
10.83 |
|
|
North end of SR 238 overlap |
| Sunol |
16.93 |
|
Sunol (Main Street) |
Interchange; northbound exit and southbound entrance |
|
17.99
680 R11.04 |
|
|
South end of I-680 overlap; interchange |
|
680 R11.85
R17.99 |
|
|
North end of I-680 overlap; interchange; no northbound entrance |
| Pleasanton |
23.56 |
|
Vallecitos Road |
Former SR 84 north |
| Livermore |
R26.22 |
|
Stanley Boulevard |
Interchange |
| R28.63 |
|
|
|
| Gap in SR 84 |
Solano
SOL 0.13-13.67 |
Rio Vista |
0.13 |
|
|
Interchange |
|
2.49 | Ryer Island Ferry across Cache Slough |
|
7.25 |
|
|
|
Yolo
YOL 0.00-24.05 |
|
4.57 |
|
|
|
| West Sacramento |
15.69 |
|
West Sacramento city limit |
North end of state maintenance |
| R21.78 |
|
|
Interchange |
| 21.84 |
|
Capitol Mall (SR 275) |
Interchange |
| 22.68 |
|
Sacramento Avenue |
Former SR 16 east |
| 23.47 |
|
Sunset Avenue |
Former SR 16 west |
| 24.05 |
|
, Reno |
Interchange |
Further Information
Get more info on 'California State Highway 84'.
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