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|map=California State Route 78.svg
|map=California State Route 78.svg
|length_mi=192.46
|length_mi=192.46
|length_ref=<ref>[http://www.dot.ca.gov/hq/structur/strmaint/brlog2.htm January 1, 2006 California Log of Bridges on State Highways]</ref>
|length_ref=<ref name="bridge log">[http://www.dot.ca.gov/hq/structur/strmaint/brlog2.htm January 1, 2006 California Log of Bridges on State Highways]</ref>
|length_round=2
|length_round=2
|established=1934<ref name="cahwy">[http://cahighways.org/073-080.html#078 California Highways: State Route 78]</ref>
|established=1934<ref name="cahwy">[http://cahighways.org/073-080.html#078 California Highways: State Route 78]</ref>
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In the Imperial and Riverside County portion from Brawley to Blythe, the road goes through several [[Arroyo (creek)|washes]]. After a rain during the desert [[monsoon]] season, these washes can be left with several inches of water, sand, and rock [[Debris#Meteorological|debris]]. There is a proposal to improve drainage by raising the roadway and installing culverts. <ref name=drainage>[http://www.co.imperial.ca.us/IVAG/ProjectBriefs/Final%20Report%204-29-05.pdf Proposed upgrades to Imperial County portion.]</ref>
In the Imperial and Riverside County portion from Brawley to Blythe, the road goes through several [[Arroyo (creek)|washes]]. After a rain during the desert [[monsoon]] season, these washes can be left with several inches of water, sand, and rock [[Debris#Meteorological|debris]]. There is a proposal to improve drainage by raising the roadway and installing culverts. <ref name=drainage>[http://www.co.imperial.ca.us/IVAG/ProjectBriefs/Final%20Report%204-29-05.pdf Proposed upgrades to Imperial County portion.]</ref>

==Major intersections==
{{CAinttop}}
{{CAint
|county=San Diego
|cspan=5
|location=Oceanside
|mile=SD 0.00<ref>{{cite map
|publisher=DeLorme
|title=Street Atlas USA measuring tool
|url=
|cartography=
|edition=2007
|section=
|accessdate=
|accessmonth=
|accessyear=
}}</ref>
|road=[[Image:I-5 (CA).svg|20px]] [[Interstate 5 (California)|I-5]]
|notes=Exit 51C (I-5).
}}
{{CAint
|location=Escondido
|mile=SD 16.54
|road=[[Image:I-15 (CA).svg|20px]] [[Interstate 15 (California)|I-15]]
|notes=Exit 32 (I-15).
}}
{{CAint
|location=Ramona
|mile=SD 35.52
|road=[[Image:California 67.svg|20px]] [[California State Route 67|SR 67]]
|notes=Northern terminus of SR 67.
}}
{{CAint
|location=Santa Ysabel
|mile=SD 51.11
|type=concur
|road=[[Image:California 79.svg|20px]] [[California State Route 79|SR 79]]
|notes=Western terminus of concurrency.
}}
{{CAint
|location=Julian
|type=concur
|mile=SD 58.13
|road=[[Image:California 79.svg|20px]] [[California State Route 79|SR 79]]
|notes=Eastern terminus of concurrency.
}}
{{CAint
|county=Imperial
|cspan=6
|location=&nbsp;
|type=concur
|mile=IMP 13.32
|road=[[Image:California 86.svg|20px]] [[California State Route 86|SR 86]]
|notes=Western terminus of concurrency.
}}
{{CAint
|location=Brawley
|lspan=3
|type=concur
|mile=IMP 36.04
|road=[[Image:California 86.svg|20px]] [[California State Route 86|SR 86]]
|notes=Eastern terminus of concurrency.
}}
{{CAint
|type=concur
|mile=IMP 36.68
|road=[[Image:California 111.svg|20px]] [[California State Route 111|SR 111]]
|notes=Western terminus of concurrency.
}}
{{CAint
|type=concur
|mile=IMP 37.91
|road=[[Image:California 111.svg|20px]] [[California State Route 111|SR 111]]
|notes=Eastern terminus of concurrency.
}}
{{CAint
|location=&nbsp;
|lspan=2
|type=concur
|mile=IMP 41.53
|road=[[Image:California 115.svg|20px]] [[California State Route 115|SR 115]]
|notes=Western terminus of concurrency.
}}
{{CAint
|type=concur
|mile=IMP 43.88
|road=[[Image:California 115.svg|20px]] [[California State Route 115|SR 115]]
|notes=Eastern terminus of concurrency.
}}
{{CAint
|county=Riverside
|location=Blythe
|mile=[[Riverside County, California|RIV]] 16.27
|road=[[Image:I-10 (CA).svg|20px]] [[Interstate 10 (California)|I-10]]
|notes=Exit 234 (I-10).
}}
{{CAintbtm}}


==Exit list==
==Exit list==
This exit list is for the freeway section connecting [[Oceanside, California|Oceanside]] with [[Escondido, California|Escondido]]. Mileposts derived from<ref name="bridge log">[http://www.dot.ca.gov/hq/structur/strmaint/brlog2.htm January 1, 2006 California Log of Bridges on State Highways]</ref> and exit numbers derived from.<ref>[[Cal-NExUS]] [http://www.dot.ca.gov/hq/traffops/signtech/calnexus/index.htm Interchange Exit Numbering]</ref>


{| class=wikitable
{| class=wikitable
Line 163: Line 64:
!County
!County
!Location
!Location
![[Postmile]]<br><ref name="bridge log"/><ref name="trucklist">[[California Department of Transportation]], [http://www.dot.ca.gov/hq/traffops/trucks/truckmap/truck-route-list.xls State Truck Route List] ([[XLS file]])</ref><ref>[[California Department of Transportation]], [http://traffic-counts.dot.ca.gov/2006all.htm All Traffic Volumes on CSHS], 2006</ref>
![[Postmile]]
![[Exit number|#]]<br><ref>[[Cal-NExUS]] [http://www.dot.ca.gov/hq/traffops/signtech/calnexus/index.htm Interchange Exit Numbering]</ref>
![[Exit number|#]]
!Destinations
!Destinations
!Notes
!Notes
|-
|-
|rowspan=32|[[San Diego County, California|San Diego]]<br><small>(SD 0.00-95.31)</small>
!colspan=7|Westbound traffic defaults onto Vista Way
|rowspan=8|[[Oceanside, California|Oceanside]]
|-
|rowspan="22"|[[San Diego County, California|San Diego]]
|rowspan=3|[[San Diego County, California|SD]] 0.00<br>SD 0.01
|
|rowspan="8"|[[Oceanside, California|Oceanside]]
|rowspan=3|SD 0.00
|&nbsp;
|Vista Way
|Vista Way
|Westbound exit and eastbound entrance
|Westbound exit and eastbound entrance; west end of SR 78; continuation beyond SR 78
|-
|-
|1A
|1A
| {{Jct|state=CA|I|5|dir1=south|city1=San Diego}}
| {{Jct|state=CA|I|5|dir1=south|name1=San Diego Freeway|city1=San Diego}}
|Westbound exit and eastbound entrance
|Westbound left exit and eastbound entrance
|-
|-
|1B
|1B
| {{Jct|state=CA|I|5|dir1=north|city1=Los Angeles}}
| {{Jct|state=CA|I|5|dir1=north|name1=San Diego Freeway|city1=Los Angeles}}
|Westbound exit and eastbound entrance
|Westbound exit and eastbound entrance
|-
|-
|SD 0.74
|SD 0.74
|1
|1C
|Jefferson Rd
|Jefferson Road
|Signed as exit 1 eastbound
|Exit 1C westbound
|-
|-
|SD 1.50
|SD 1.50
|2
|2
| {{Jct|state=CA|CR|S11|county1=San Diego|name1=El Camino Real}} &ndash; [[Westfield Plaza Camino Real]]
| {{Jct|state=CA|CR|S11|county1=San Diego|name1=El Camino Real}}
|Serves [[Westfield Plaza Camino Real]]
|-
|-
|SD R3.32
|SD R3.32
|3
|3
|College Blvd &ndash; [[MiraCosta College]]
|College Boulevard
|Westbound exit accessible via Vista Way; eastbound entrance accessible via Plaza Dr
|Westbound exit accessible via Vista Way; eastbound entrance accessible via Plaza Drive; serves [[MiraCosta College]]
|-
|-
|
|
|4A
|4A
|Plaza Dr
|Plaza Drive
|Eastbound exit; Westbound entrance accessible via College Blvd
|Eastbound exit; westbound entrance accessible via College Boulevard
|-
|-
|SD 4.38
|SD 4.38
|4B
|4B
|Emerald Dr
|Emerald Drive
|Exit 4 westbound
|Signed as exit 4 westbound
|-
|-
|rowspan="5"|[[Vista, California|Vista]]
|rowspan=5|[[Vista, California|Vista]]
|SD 5.94
|SD 5.94
|6A
|6A
|Melrose Dr
|Melrose Drive
|Eastbound exit and westbound entrance
|Eastbound exit and westbound entrance; serves Vista Court Complex
|-
|-
|SD R6.19
|SD R6.19
|6B
|6B
| {{Jct|state=CA|CR|S13|county1=San Diego|name1=Vista Village Dr}}
| {{Jct|state=CA|CR|S13|county1=San Diego|name1=Vista Village Drive}}
|Exit 6 westbound
|Signed as exit 6 westbound
|-
|-
|SD 6.94
|SD 6.94
|7
|7
|Escondido Ave
|Escondido Avenue
|
|-
|-
|SD 7.71
|SD 7.71
|8
|8
|Mar Vista Dr
|Mar Vista Drive
|
|-
|-
|SD 9.08
|SD 9.08
|9
|9
|Sycamore Ave
|Sycamore Avenue
|
|-
|-
|rowspan="6"|[[San Marcos, California|San Marcos]]
|rowspan=6|[[San Marcos, California|San Marcos]]
|SD 10.61
|SD 10.61
|11A
|11A
| {{Jct|state=CA|CR|S10|county1=San Diego|name1=Rancho Santa Fe Rd}}
| {{Jct|state=CA|CR|S10|county1=San Diego|name1=Rancho Santa Fe Road}}
|
|-
|-
|SD 11.18
|SD 11.18
|11B
|11B
|Las Posas Rd &ndash; [[Palomar College]]
|Las Posas Road
|Eastbound ramps accessible via Grand Ave
|Eastbound ramps accessible via Grand Avenue; serves [[Palomar College]]
|-
|-
|SD 12.13
|SD 12.13
|12
|12
|{{Jct|state=CA|CR|S12|county1=San Diego|name1=San Marcos Blvd}}
| {{Jct|state=CA|CR|S12|county1=San Diego|name1=San Marcos Boulevard}}
|
|-
|-
|SD R12.91
|SD R12.91
|13
|13
|Twin Oaks Valley Rd &ndash; [[California State University, San Marcos|Cal State San Marcos]]
|Twin Oaks Valley Road
|Serves [[California State University, San Marcos|California State University San Marcos]]
|-
|-
|SD 14.24
|SD 14.24
|14
|14
|Barham Dr, Woodland Pkwy
|Barham Drive, Woodland Parkway
|Westbound ramps accessible via Rancheros Dr
|Westbound ramps accessible via Rancheros Drive
|-
|-
|SD 15.49
|SD 15.49
|15
|15
|Nordahl Rd
|Nordahl Road
|
|-
|-
|rowspan="3"|[[Escondido, California|Escondido]]
|rowspan=6|[[Escondido, California|Escondido]]
|rowspan=2|SD R16.54
|rowspan=2|SD R16.54
|17A
|17A
| {{Jct|state=CA|I|15|dir1=south}}
| {{Jct|state=CA|I|15|dir1=south|name1=Escondido Freeway|city1=San Diego}}
|rowspan=2|Combined as Exit 17 westbound
|rowspan=2|Signed as exit 17 westbound
|-
|-
|17B
|17B
| {{Jct|state=CA|I|15|dir1=north}}
| {{Jct|state=CA|I|15|dir1=north|name1=Escondido Freeway|city1=Riverside}}
|-
|-
|SD R17.27
|SD R17.27
|17C
|17C
| {{Jct|state=CA|BL|15|dab1=Escondido|name1=Centre City Pkwy}}
| {{Jct|state=CA|BL|15|dab1=Escondido|name1=Centre City Parkway}} – [[Escondido, California|Central Escondido]]
|Eastbound exit and westbound entrance
|Eastbound exit and westbound entrance
|-
|-
!colspan=7|'''Freeway ends at Broadway'''
!colspan=4|East end of freeway
|-
|SD R17.68
|
|Broadway, Lincoln Parkway
|
|-
|SD T19.27
|
| {{Jct|state=CA|CR|S6|county1=San Diego|name1=Valley Parkway}}
|
|-
|[[San Diego, California|San Diego]]
|SD R22.56
|
|San Pasqual Road, Cloverdale Road
|
|-
|[[Ramona, California|Ramona]]
|SD 35.52
|
| {{Jct|state=CA|SR|67|dir1=south|name1=Main Street|city1=San Diego|road=10th Street}}
|North end of SR 67
|-
|[[Santa Ysabel, California|Santa Ysabel]]
|SD 51.11
|
| {{Jct|state=CA|SR|79|dir1=north}}
|West end of SR 79 overlap
|-
|[[Julian, California|Julian]]
|SD 58.13
|
| {{Jct|state=CA|SR|79|dir1=south}} – [[Lake Cuyamaca]], [[Cuyamaca Rancho State Park|Cuyamaca Park]]
|East end of SR 79 overlap
|-
|rowspan=3|
|
|
| {{Jct|state=CA|CR|S2|dir1=south|county1=San Diego|name1=Great Southern Overland Stage Route of 1849}}
|West end of CR S2 overlap
|-
|SD 70.01
|
| {{Jct|state=CA|CR|S2|dir1=north|county1=San Diego|name1=San Felipe Road|city1=Warner Springs|city2=Hemet}}
|East end of CR S2 overlap
|-
|SD 76.84
|
| {{Jct|state=CA|CR|S3|county1=San Diego|name1=Yaqui Pass Road}}
|
|-
|rowspan=10|[[Imperial County, California|Imperial]]<br><small>(IMP 0.00-80.74)</small>
|
|[[Imperial County, California|IMP]] 13.18<br>''86'' IMP 43.56
|
| {{Jct|state=CA|SR|86|dir1=north}}
|West end of SR 86 overlap
|-
|rowspan=3|[[Brawley, California|Brawley]]
|''86'' IMP 20.63<br>IMP 13.19
|
| {{Jct|state=CA|SR|86|dir1=south|name1=1st Street|city1=El Centro}}
|East end of SR 86 overlap
|-
|IMP 13.80
|
| {{Jct|state=CA|SR|111|dir1=north|CR|S31|county2=Imperial|name2=8th Street|city1=Calipatria}}
|West end of SR 111 overlap
|-
|
|
|Best Road, Old Highway 111
|Former [[California State Route 111|SR 111]]
|-
|rowspan=6|
|IMP 15.04
|
| {{Jct|state=CA|SR|111|dir1=south|city1=Calexico}}
|West end of SR 111 overlap
|-
|IMP 18.65
|
| {{Jct|state=CA|SR|115|dir1=north|name1=West Road|city1=Calipatria}}
|West end of SR 115 overlap
|-
|IMP 21.02
|
| {{Jct|state=CA|SR|115|dir1=south|city1=Holtville}}
|East end of SR 115 overlap
|-
|
|
| {{Jct|state=CA|CR|S32|county1=Imperial|name1=Butters Road}}
|
|-
|
|
| {{Jct|state=CA|CR|S33|county1=Imperial|name1=Green Road}}
|
|-
|IMP 52.34
|
| {{Jct|state=CA|CR|S34|county1=Imperial|name1=Ogilby Road}}
|
|-
|[[Riverside County, California|Riverside]]<br><small>(RIV 0.00-16.41)</small>
|[[Blythe, California|Blythe]]
|[[Riverside County, California|RIV]] 16.41
|
| {{Jct|state=CA|I|10}} – [[Phoenix, Arizona|Phoenix]], [[Los Angeles, California|Los Angeles]]
|Interchange; east end of SR 78
|}
|}


Revision as of 02:30, 26 January 2008

State Route 78 marker
State Route 78
Route information
Maintained by Caltrans
Length192.46 mi[1] (309.73 km)
Existed1934[2]–present
Major junctions
West end I-5 in Oceanside
Major intersections I-15 in Escondido
SR 79 at Julian
SR 86 in Brawley
East end I-10 in Blythe
Location
CountryUnited States
StateCalifornia
Highway system
← SR 77→ SR 79

State Route 78 runs from Oceanside to Blythe. Its western terminus is in San Diego County, California and its eastern terminus is in Riverside County, California.

Route description

For the first few miles starting out from Oceanside SR 78 is a freeway. It begins at a nonstandard interchange with Interstate 5 and Vista Way, including a traffic signal. Then Route 78 goes through Vista. The freeway then continues into San Marcos and Escondido and intersects with Interstate 15. After that the freeway abruptly ends at the intersection with Broadway, after the Centre City Parkway interchange (old U.S. Route 395). Route 78 then snakes through the Escondido city streets and leaves the city on the way to the San Diego Wild Animal Park and Ramona. In Ramona, Route 78 meets State Route 67. 78 then continues on a curvy mountain road to Julian where it meets State Route 79. After that, the highway goes into Imperial County and Brawley, when it is concurrent with State Route 86. The highway goes through the desert into Riverside County where it ends in Blythe at Interstate 10.

It is known as Ronald Packard Parkway from Interstate 5 in Oceanside to Interstate 15 in Escondido, and Ben Hulse Highway from Route 86 near Brawley to Interstate 10 near Blythe.

Major cities
Bolded cities are officially-designated control cities for signs

History

A new interchange has been constructed at Las Posas Road in San Marcos, which will aid Palomar College students and hopefully clear up traffic on the Rancho Santa Fe exit.

Before the freeway was built, SR 78 was routed on Vista Way from Oceanside east to downtown Vista. After this, it followed Santa Fe Drive (currently County Route S14) east. Then it followed Mission Road to the current end of the freeway and the current highway routing at Interstate 15. [2]

In the 1980s, the section of SR 78 east of Brawley was known as Imperial County Route S78.[2]

Construction took place in 1998 to add the Vista Village Drive interchange, and another lane was added to the ramp between I-5 NB and SR 78 eastbound to alleviate the congestion at that intersection.

In 1999 there was a standoff between an armed woman and the California Highway Patrol, jamming traffic on the freeway for several hours.

Future developments

There may be another interchange added to SR 78 to meet Rancho Del Oro Road in Oceanside.

The I-5 interchange will be improved to get rid of the traffic signal, although that would involve getting rid of the Park and Ride lot next to the end of the freeway.

In the Imperial and Riverside County portion from Brawley to Blythe, the road goes through several washes. After a rain during the desert monsoon season, these washes can be left with several inches of water, sand, and rock debris. There is a proposal to improve drainage by raising the roadway and installing culverts. [3]

Exit list

County Location Postmile
[1][4][5] 		#
[6] 		Destinations Notes
San Diego
(SD 0.00-95.31) 		Oceanside SD 0.00
SD 0.01 		Vista Way Westbound exit and eastbound entrance; west end of SR 78; continuation beyond SR 78
1A
I-5 south (San Diego Freeway) – San Diego 		Westbound left exit and eastbound entrance
1B
I-5 north (San Diego Freeway) – Los Angeles 		Westbound exit and eastbound entrance
SD 0.74 1C Jefferson Road Signed as exit 1 eastbound
SD 1.50 2 CR S11 (El Camino Real) Serves Westfield Plaza Camino Real
SD R3.32 3 College Boulevard Westbound exit accessible via Vista Way; eastbound entrance accessible via Plaza Drive; serves MiraCosta College
4A Plaza Drive Eastbound exit; westbound entrance accessible via College Boulevard
SD 4.38 4B Emerald Drive Signed as exit 4 westbound
Vista SD 5.94 6A Melrose Drive Eastbound exit and westbound entrance; serves Vista Court Complex
SD R6.19 6B CR S13 (Vista Village Drive) Signed as exit 6 westbound
SD 6.94 7 Escondido Avenue
SD 7.71 8 Mar Vista Drive
SD 9.08 9 Sycamore Avenue
San Marcos SD 10.61 11A CR S10 (Rancho Santa Fe Road)
SD 11.18 11B Las Posas Road Eastbound ramps accessible via Grand Avenue; serves Palomar College
SD 12.13 12 CR S12 (San Marcos Boulevard)
SD R12.91 13 Twin Oaks Valley Road Serves California State University San Marcos
SD 14.24 14 Barham Drive, Woodland Parkway Westbound ramps accessible via Rancheros Drive
SD 15.49 15 Nordahl Road
Escondido SD R16.54 17A
I-15 south (Escondido Freeway) – San Diego 		Signed as exit 17 westbound
17B
I-15 north (Escondido Freeway) – Riverside
SD R17.27 17C I-15 BL (Centre City Parkway) – Central Escondido Eastbound exit and westbound entrance
East end of freeway
SD R17.68 Broadway, Lincoln Parkway
SD T19.27 CR S6 (Valley Parkway)
San Diego SD R22.56 San Pasqual Road, Cloverdale Road
Ramona SD 35.52
SR 67 south (Main Street) – San DiegoModule:Jct warning: "road" parameter is deprecated 		North end of SR 67
Santa Ysabel SD 51.11
SR 79 north 		West end of SR 79 overlap
Julian SD 58.13
SR 79 south – Lake Cuyamaca, Cuyamaca Park 		East end of SR 79 overlap

CR S2 south (Great Southern Overland Stage Route of 1849) 		West end of CR S2 overlap
SD 70.01
CR S2 north (San Felipe Road) – Warner Springs, Hemet 		East end of CR S2 overlap
SD 76.84 CR S3 (Yaqui Pass Road)
Imperial
(IMP 0.00-80.74) 		IMP 13.18
86 IMP 43.56
SR 86 north 		West end of SR 86 overlap
Brawley 86 IMP 20.63
IMP 13.19
SR 86 south (1st Street) – El Centro 		East end of SR 86 overlap
IMP 13.80
SR 111 north / CR S31 (8th Street) – Calipatria 		West end of SR 111 overlap
Best Road, Old Highway 111 Former SR 111
IMP 15.04
SR 111 south – Calexico 		West end of SR 111 overlap
IMP 18.65
SR 115 north (West Road) – Calipatria 		West end of SR 115 overlap
IMP 21.02
SR 115 south – Holtville 		East end of SR 115 overlap
CR S32 (Butters Road)
CR S33 (Green Road)
IMP 52.34 CR S34 (Ogilby Road)
Riverside
(RIV 0.00-16.41) 		Blythe RIV 16.41 I-10 – Phoenix, Los Angeles Interchange; east end of SR 78

State law

Legal Definition of Route 78: California Streets and Highways Code, Chapter 2, Article 3, Section 378 Template:CAFES Template:CAScenicAlt

References

  1. ^ a b January 1, 2006 California Log of Bridges on State Highways
  2. ^ a b c California Highways: State Route 78
  3. ^ Proposed upgrades to Imperial County portion.
  4. ^ California Department of Transportation, State Truck Route List (XLS file)
  5. ^ California Department of Transportation, All Traffic Volumes on CSHS, 2006
  6. ^ Cal-NExUS Interchange Exit Numbering
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