California State Route 152
|This article needs additional citations for verification. (March 2009)|
|Defined by S&HC § 452|
|Maintained by Caltrans|
|Length:||104.419 mi (168.046 km)
(plus about 1.5 mi (2.5 km) on US 101)
|History:||State highway in 1916; SR 152 in 1934|
|West end:||SR 1 in Watsonville|
| US 101 in Gilroy
I-5 near Santa Nella
SR 165 in Los Banos
SR 59 near Los Banos
|East end:||SR 99 near Chowchilla|
State Route 152 (SR 152) is a state highway that runs near the latitudinal middle of the U.S. state of California from Watsonville to Route 99 southeast of Merced. Its western portion (which is also known as Pacheco Pass Road) provides the best access to and from Interstate 5 toward southern California for motorists in or near San Jose.
Route 152 begins near Route 1 as a series of local streets that run through downtown Watsonville: East Lake Avenue carries it to the intersection of Casserly Road. This point marks the start of a winding two-lane highway that crosses the Santa Cruz Mountains through Hecker Pass to reach Gilroy. In Gilroy, it is again carried on a series of local streets, then overlapped onto U.S. Route 101 for a small stretch before it separates again a short distance to the south and returns to heading east/west on more local streets in Gilroy.
After exiting the large commercial developments near U.S. 101, Route 152 consists of a single lane in each direction, with narrow shoulders, rain ditches on either side of the road, no center dividers, and posted speed limit of 55 mph (89 km/h), making it prone to head-on collisions. Headlights are required at all times along this portion. This segment is a significant bottleneck for traffic traveling along Route 152 between the San Francisco Bay area and the Central Valley. Upon reaching Route 156 near Hollister, the road expands to two lanes in each direction, and climbs and curves along the valley of Pacheco Creek into the mountains of the Diablo Range, crossing them through the Pacheco Pass into the San Joaquin Valley.
Route 152 continues as a four-lane divided expressway, descending along the northern and eastern shore of the massive San Luis Reservoir. The route passes in between the San Luis Dam and the O'Neill Forebay. The route continues east and passes a large Path 15 substation and then meets Interstate 5 as an expressway. It becomes a speed-limited city street, Pacheco Blvd., while passing through Los Banos. It then returns to an expressway until its eastern terminus at Route 99. Here, eastbound 152 traffic merges on to southbound 99 a few miles northwest of the city of Madera, and approximately 25 miles (40 km) northwest of Fresno. Motorists wishing to travel north on Route 99 are advised to take Route 233 north through Chowchilla to connect to northbound 99. Another possible northbound route exists by exiting Route 152 at State Route 59, and proceeding directly north to the city of Merced, where Route 59 meets Route 99.
Highway 152 Tree Row
|Nearest city||Gilroy, California|
|NRHP Reference #||07000635|
|Added to NRHP||July 3, 2007|
The road became popular as a route east during the California Gold Rush. The Butterfield Overland Mail ran along this route from 1858 to 1861. A portion of Route 152 from Bell Station to Pacheco Pass was a toll road from sometime in the 1840s until 1878. In that year, Merced County and Santa Clara County purchased the road. It was eventually upgraded to a state route. Historic references say the portion of the route west of SR33 was named Legislative Route 32 before being designated State Route 152.
In 1992, the road was widened from two to four lanes from Casa de Fruta to the intersection with Interstate 5. Beginning in 2007, a T-junction and stop sign at the intersection with California State Route 156 on the remaining two-lane section of the highway near Casa de Fruta was replaced with a flyover, greatly easing congestion there.
A segment of Route 152 west of Gilroy, between the Uvas Creek Bridge and Santa Teresa Blvd, was added to the National Register of Historic Places in 2007. This segment of the road, serving as a western gateway into Gilroy, is lined with deodar cedar trees that were planted on consecutive Arbor Days in 1930 and 1931.
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, and do not necessarily reflect current mileage. R reflects a realignment in the route since then. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.
|Watsonville||T0.31||SR 1 north – Santa Cruz||Interchange; westbound exit and eastbound entrance|
|T2.50||Freedom Boulevard – Freedom|
|R1.99||Holohan Road, College Road – Freedom, Santa Cruz|
|3.69||Carlton Road, Casserly Road|
|5.03||CR G8 (Watsonville Road) – Morgan Hill, San Jose|
|Gilroy||7.93||Santa Teresa Boulevard||Serves Gavilan College|
US 101 Bus. south (Monterey Street)
|West end of US 101 Bus. overlap|
US 101 Bus. north (Monterey Street) / Welburn Avenue
|East end of US 101 Bus. overlap|
|US 101 north / CR G9 (Leavesley Road) – San Jose||Interchange; west end of US 101 overlap|
|West end of freeway on US 101|
|East end of freeway on US 101|
|US 101 south / 10th Street – Los Angeles||Interchange; east end of US 101 overlap|
|12.81||CR G9 (Ferguson Road)|
|14.89||CR G7 (Bloomfield Avenue)|
|R21.98||SR 156 west – Hollister||Interchange; no westbound entrance|
|R23.41||Casa de Fruta Parkway||Interchange|
|11.27||SR 33 north to I-5 north – Santa Nella, Gustine||Interchange; west end of SR 33 overlap|
|13.85||I-5 – Sacramento, San Francisco, Los Angeles||Interchange|
|Los Banos||21.27||SR 165 (Mercey Springs Road) to I-5 south – Turlock|
|R32.37||SR 33 south – Dos Palos, Mendota||Interchange; east end of SR 33 overlap|
|SR 59 – Merced||Interchange|
|West end of freeway|
|10.80||SR 233 (Robertson Boulevard) to SR 99 north – Chowchilla|
|East end of freeway|
|Califa||15.63||SR 99 south – Madera, Fresno||Interchange; eastbound exit and westbound entrance; former US 99|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- Indicates that the postmile represents the distance along US 101 rather than SR 152.
- Staff. "State Truck Route List" (XLS file). California Department of Transportation. Retrieved August 21, 2012.
- CA Codes (shc:250-257)
- CA Codes (shc:260-284)
- "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009. Retrieved July 26, 2012.
- Myer, Chuck, report: Pacheco Past: A History of the Gateway to Santa Clara County, (San Jose, California: Pioneers of Santa Clara County, 1992), page 9.
- Shumate, Dr. Albert, Francisco Pacheco of Pacheco Pass, (Stockton, California: University of the Pacific, 1977). This information is repeated in other sources.
- Richards, Gary (November 10, 2007), "Pacheco Pass unplugged: Relief on the way at 152-156 interchange", San Jose Mercury-News.
- California Department of Transportation, Log of Bridges on State Highways, July 2007
- California Department of Transportation, All Traffic Volumes on CSHS, 2006