South Bay (SF), California

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South Bay, California
latitude: 37.33, longitude: -121.94
Browse map of South Bay 37°19′48″ N, 121°56′24″ W
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South Bay is a region in California at latitude 37°19′48″ North, longitude 121°56′24″ West.

The South Bay is part of San Francisco Bay Area, California which includes the cities of Campbell, Cupertino, Gilroy, Los Altos, Los Altos Hills, Los Gatos, Milpitas, Monte Sereno, Morgan Hill, Mountain View, Palo Alto, San Jose, Santa Clara, Saratoga and Sunnyvale. Essentially the urban core(s) of Santa Clara County, the South Bay is known around the world as "Silicon Valley" due to its high concentration of silicon chip-making, software and high-technology companies headquartered in the area.

Expressways in Santa Clara County

Santa Clara County has roadways rather unique in California known as "Expressways." Their history is curious: local citizens chartered them during the middle-20th century to be a three-phase tax approach to build freeways (highway=motorway). However, voters approved taxes for only the first two phases, leaving incomplete the final upgrade phase to freeway scheduled for the late-20th century. Expressways are usually dual-carriageway, moderate-to-higher speed roads (40-50 MPH / 65-80 kph) with traffic signals separated by relatively long distances. They are designed to minimize cross-traffic (few side-streets and driveways), have on-ramps, off-ramps, grade separated overpasses and underpasses in places, though mostly use highway=traffic_signals to regulate/route traffic, and so are denoted in OSM with highway=trunk. Only one has become a true freeway in California's legal sense (Guadalupe Parkway was upgraded to State Route 87). Different from freeways (which get a simple State Route number in their ref=* tag), expressways are part of California's County Route system and get a ref=* tag beginning with one of nine region-based capital letters followed by a one- or two-digit number, e.g. "G6" or "G21." Whether by bicycle or automobile, Expressways are aptly named, as they are often the fastest way to travel the traffic-congested roadways of Silicon Valley: many contain dedicated cycleway=lanes and "dynamic diamond lanes" with special overhead signals for high-occupancy vehicles (2 or more passengers) that change with daily commute patterns to keep traffic flowing.

Cycle Routes in Santa Clara County

The Santa Clara Countywide Bicycle Plan (CBP), last updated in June, 2008, has a list of bicycle routes and each route's path in Appendix C2, with maps here.

Bicycle Plans

Organization Info page Bike Plan Bicycle Friendly Award
Campbell BPAC  ? No
Cupertino BPAC minutes Bike Plan Bronze
Gilroy BPC Bike plan from 2002 No
Los Altos
Los Gatos
Milpitas
Morgan Hill
Mountain View
Palo Alto
San Jose Bicycling & Walking Bike Plan 2020 Bronze
Santa Clara
Saratoga
Sunnyvale Bicycle and Pedestrian Advisory Commission Bike Plan from 2006 Bronze
VTA bicycle program Bike plan from 2008 N/A
Caltrain BAC N/A

County Cycle Routes

Numbered routes (lcn)

These are in a relation with network=lcn where members of underlying infrastructure are often bike lanes tagged with cycleway=lane (Class II), though they may also be cycleway=shared_lanes (Class III) or dedicated highway=cycleways (Class I).

Route # (lcn) Route Name Description Mapped Map link Notes
01 Highway 101 Corridor San Mateo County to San Benito County 100% Relation 149407 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) 65.26 out of 65.26 miles! (Seems it should almost become regional — nah!)
02 Alma Street/Caltrain Corridor San Mateo County to Santa Clara 95% Relation 1022075 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
03 Dumbarton - East-West Connector North Palo Alto to Los Altos Hills 100% Relation 1109585 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
04 El Camino Real/ Grand Boulevard Corridor San Mateo County to Downtown San Jose 0% none Route is planned but no bike lanes yet. Be very careful bicycling on El Camino Real!
05A Shoreline-Miramonte Corridor Mountain View to Los Altos Hills 100% Relation 1027213 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
05B El Monte Alignment Los Altos, Los Altos Hills 90% Relation 1205004 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
05C San Antonio/Arastradero Alignment Los Altos, Los Altos Hills 50% Relation 1205048 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) A large part of the middle stretch of this route is incomplete.
06 Tasman/Alum Rock Light Rail corridor Mountain View to East San Jose 100% Relation 1109602 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
06A River Oaks Spur Many gaps in the route list in document 0% none
07 Old Highway 9 Corridor North Sunnyvale to Los Gatos 90% Relation 1017450 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Path around De Anza Community College is incomplete (probably not built yet)
08A Homestead/Hedding/Brokaw Corridor South Los Altos to San Jose International Airport 90% Relation 1015911 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) To do: Track Crossing (may not exist yet need to check) and opposite direction at airport.
08B Park / Penitencia Santa Clara University to Penitencia Trail 30% Relation 2672908 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) spur Relation 56558 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
09 Wolfe Rd / Borregas Corridor Sunnyvale to Saratoga 100% Relation 1002045 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
10A I-280 Corridor Cupertino to Northern East San Jose 90% Relation 1183076 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
10B I-280 Corridor - Stevens Creek Boulevard 100% Relation 1185185 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
10C Newer Stevens Canyon Road Route 100% Relation 3501676 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
11A Calabazas Creek/Winchester Corridor Sunnyvale to Los Gatos 95% Relation 1185190 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
11B Newer San Jose Route C Santa Clara to Campbell 100% Relation 55971 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Overlapping route clean up to follow 11B
12A South of 1-280 Corridor Cupertino to Hillview, east San Jose 90% Relation 2672916 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
12B 0% none
13 Bowers/Keily/Saratoga Corridor Northern Santa Clara to Skyline Boulevard 90% Relation 56567 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
14 Campbell/Curtner/Tully Corridor Cupertino/Saratoga to Eastridge 100% Relation 1286275 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
15 Valley Fair to Santa Teresa Corridor Downtown Santa Clara to San Benito County 0% none
16A Newer San Jose Route E 0% none
16B Blossom Hill Road Corridor Saratoga to southeast San Jose 0% none
17 I-880/I-680 Corridor Alameda County to Los Gatos 100% Relation 3504754 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
18 San Martin East-West Route Uvas Road to east side 0% none
18A 0% none
18B 0% none
19 I-880 Corridor Alameda County to Downtown San Jose 100% Convert: Relation 53567 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
20 Coyote Valley/Uvas Reservoir Corridor South County to SR 152 0% none
21 I-680 Corridor to Silver Creek Alameda County to South San Jose 100% Relation 3504729 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
22 SR 152 Corridor Santa Cruz County line to Merced County line 0% none
23 Eastern South Valley Corridor Morgan Hill, San Martin, Gilroy 0% none
24 Ridge Line Corridor Los Gatos to Mount Madonna 0% none

Trails (rcn and lcn)

According to the CBP, Trail routes are categorized into a hierarchy of three levels. These are:

Regional Trails (T-R#): that are of national, state, or regional recreation significance and extend beyond the borders of Santa Clara County;
Sub-Regional Trails (T-S#): that provide regional recreation and transportation benefits by providing continuity between cities and convenient, long-distance trail loop opportunities that link two or more Regional Trails; and
Connector Trails (T##): that provide convenient means of access from urban areas to the trail network of Regional and Sub-regional Trails or that connect County Parks.

So, "Regional Trails" (T-R#) get network=rcn and "Connector Trails" (T##) get network=lcn. As for "Sub-Regional Trails" (T-S#) being better-tagged with network=rcn or network=lcn, the Guadalupe River Trail (T-S3) was tagged with network=rcn and ref=GRT, due to its length, connectivity to other regional cycleways and proximity to the high-density urban core of Downtown San Jose. This led to all "Sub-Regional Trails" (T-S#) being tagged network=rcn and the following regional conventions:
• the network=rcn namespace is used with a more "regional" naming style on longer, more prominent trails such as "San Francisco Bay" Trail in a form similar to ref=SFB (three-letter acronym), and
• the network=lcn namespace is used with the Santa Clara County numbering protocol on routes of the form ref=T## (but not ref=T-R# and ref=T-S#, as these get "promoted to regional.")
Note that Cycle Map layer allows a maximum of three alphanumeric characters in a ref=* tag, so consider deleting hyphens in routes named T-S# in ref=* tags when these are lcn=*. However, as a three-character acronym from the Trail name is the style for a ref=* tag on regional routes, there is no hyphen to delete, yet we wish to not delete the local protocol route number from OSM, either. This leads to another convention:
• appropriately add tag alt_ref=T-R# or alt_ref=T-S# to "promoted to regional" network=rcn routes. For example, Santa Clara County portions of San Francisco Bay Trail are tagged network=rcn + ref=SFB, yet also contain tag alt_ref=T-R4. This allows OSM tagging to capture Santa Clara County's local protocol route number on a route tagged regional (as the local number does not display in Cycle Map layer).

Many regional trails are in early planning stages. For example, the "de Anza Trail" (dAT) portion is only an initial component of T-R1 (a much longer project) and both Monterey-Yosemite State Trail and Benito-Clara Trail lack sufficient geographical data to enter into OSM.

Route # (T## = lcn,
T-R#, T-S# = rcn)
Route Name Description Mapped Map link Notes
T01 Highway 237 Trail/Calaveras Boulevard Milpitas to Mountain View 40% Relation 5336141 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as lcn T01. Currently stops westbound at Zanker Road
T02 San Tomas Aquino/Saratoga Creek Santa Clara, Cupertino, San Jose, Campbell 100% Relation 1023172 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as lcn T02
T03 Highway 87 Trail City of San Jose 100% Relation 53029 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as lcn T03
T04 Uvas Creek Trail City of Gilroy 0% none
T-R1 Juan Bautista de Anza National Highway San Mateo to San Benito County Lines 10% Relation 5335186 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as rcn dAT from Vasona Junction to McClellan Road
T-R2 Monterey-Yosemite State Trail TBD 0% none Route not fully planned
T-R3 Benito-Clara Trail TBD 0% none Route not fully planned
T-R4 San Francisco Bay Trail San Mateo to Alameda County Lines 50% Relation 1285802 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as rcn SFB independent from other SFB relation Relation 325779 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) These might be merged.
T-R5 Bay Area Ridge Trail Alameda to San Benito County Lines 10% Relation 5336258 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Seeded near Penitencia Creek as lcn TR5 (not rcn BAR, this is in early stages and seems more local than regional)
T-S1 Matadero Creek/Page Mill Trail Palo Alto, Los Altos Hills, Stanford University 10% Relation 5336230 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Seeded between Foothill Expressway and Deer Creek Road as rcn PMT
T-S2 Stevens Creek Trail Trail running along creek next to Highway 85 100% Relation 952271 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as rcn SCT. Expected to grow further southward.
T-S3 Guadalupe River/Los Alamitos Creek Alviso, San Jose 80% Relation 5322545 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Stubbed in as rcn GRT; needs work to complete both sides of creek
T-S4 Los Gatos Creek Trail San Jose, Campbell, Los Gatos 100% Relation 5335571 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as rcn LGC
T-S5 Coyote Creek Trail/Llagas Creek Trail Milpitas to Coyote Lake, South County 60% Relation 3504713 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) Entered as rcn CCT; gap south of Milpitas needs to be added
T-S6 West Valley Trail Almaden Lake Park-so. link of Bay Area Ridge Trail 0% none
T-S7 Morgan Hill Cross-Valley Trail West Valley Trail to Lake Anderson County Park 0% none
T-S8 San Martin Cross-Valley Trail West Valley Trail - Bay area Ridge Trail near Coyote Lake 0% none

Expressways (lcn)

Currently, these are entered as network=lcn though they might be promoted to network=rcn at some point in the future.

Route # (lcn) Route Name Description Mapped Map link Notes
X-G02 Lawrence Expressway Route Saratoga to Sunnyvale 95% Relation 1205049 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) connectors to do.
X-G03 Oregon/Page Mill Expressway Route Los Altos Hills to Palo Alto 100% Relation 3501967 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
X-G04 Montague/San Tomas Expressway Milpitas to Campbell 100% Relation 3501740 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
X-G05 Foothill Expressway San Mateo County line, Los Altos, Los Altos Hills, Palo Alto, Cupertino 90% Relation 1204994 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) only connectors to do
X-G06 Central Expressway Route Mountain View to Santa Clara 100% Relation 3501976 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
X-G08 Almaden Expressway Route City of San Jose 100% Relation 3502001 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
X-G15 Capitol Expressway Route City of San Jose 100% Relation 3502008 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)

City Cycle Routes

Sunnyvale Cycle Routes (lcn)

Route # (lcn) Route Description Mapped Map link Notes
None John W. Christian Greenbelt A path along a water pipe right-of-way 100% Relation 60198 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)

Unlabeled routes to clean up?

Public Transportation Routes

See Valley Transportation Authority (VTA) page.

Events

Anyone fancy running a South Bay Mapping Party?

Past Events

Mountain View Mapping Party - February 2009

See Also