Skip to main content

Former California State Route 152 east of Pacheco through the San Luis Reservoir

By

Dinosaur Point Road east of Pacheco Pass to the waters of the San Luis Reservoir is the original alignment of California State Route 152.  Since July 1965, California State Route 152 has been realigned east of Pacheco Pass via a modernized expressway.  The original alignment of California State Route 152 on occasion reemerges from the San Luis Reservoir at Dinosaur Point.  Pictured above as the blog cover is the original alignment of California State Route 152 at Dinosaur Point disappearing eastward into the waters of the San Luis Reservoir.  Below California State Route 152 can be seen passing through what is now the San Luis Reservoir east of Pacheco Pass on the 1935 Division of Highways Map of Merced County.


Part 1; the history of California State Route 152 east of Pacheco Pass through the San Luis Reservoir site

The present site of the San Luis Reservoir during the era of Alta California was part of Rancho San Luis Gonzaga.  Rancho San Luis Gonzaga was granted to Francisco Jose Rivera of Monterey during 1841.  Rivera ultimately never occupied Rancho San Luis Gonzaga.  During 1843 large portions of Rancho San Luis Gonzaga were granted to Juan Carlos Pacheco and Captain Jose Maria Meija.  Within days of being granted part of Rancho San Luis Gonzaga, Captain Meija would gift his share to Pacheco.  Rancho San Luis Gonzaga even by the 1840s was already a well-established crossing the Diablo Range and would come to be known as Pacheco Pass.  

An established trail over Pacheco Pass had been use by the local Yokut Tribes long before the arrival of Europeans to California.  The first documented European crossing of Pacheco Pass was made in 1805 by a party led by Spanish Army Officer Gabriel Moraga.

During the American period Andrew Firebaugh constructed a tolled stage road across Pacheco Pass to Bell Station.  Firebaugh's toll road was completed by 1857 and was part of the Butterfield Overland Mail route between 1858-1861.  A primitive path over Pacheco Pass to Gilroy can be seen on the 1857 Britton & Rey's Map of California.

The Butterfield Overland route over Pacheco Pass is touched on in the September 1950 California Highways & Public Works.   


The more established Pacheco Pass Toll Road can be seen on the 1873 Bancroft's Map of California.  In 1879 Santa Clara County and Merced County purchased the Pacheco Pass Toll Road, rebuilt it on a new grade and made it a public highway.  

The history of State Highways over Pacheco Pass begins in 1915 with the passage of the Second State Highway Bond Act.  Legislative Route Number 32 ("LRN 32") was added to the State Highway System with the following definition:

"an extension connecting the San Joaquin valley trunk line (LRN 4/Inland Route) at a point between the city of Merced in Merced County and the city of Madera in Madera County with the coast trunk line (LRN 2/Pacific Highway) at or near the city of Gilroy in Santa Clara County, through Pacheco Pass, by the most direct and practical route."

The entirety of LRN 32 between Califa and Gilroy by way of Pacheco Pass appears on the 1917 California State Automobile Map.  

According to the March/April 1951 California Highways & Public Works the State completed construction of a new alignment for LRN 32 over Pacheco Pass by 1923.   The 1923 alignment of LRN 32 was a replacement for the 1879 Santa Clara County/Merced County highway.  

  

During 1933 LRN 32 would be extended west from Gilroy via Hecker Pass to Watsonville.  The entirety of LRN 32 was announced as California State Route 152 in the August 1934 California Highways & Public Works.  


Below California State Route 152/LRN 32 can be seen passing through what is now the San Luis Reservoir east of Pacheco Pass on the 1935 Division of Highways Map of Merced County.

Plans for the construction of San Luis Dam were completed by 1961 and construction broke ground during August 1962.  The construction of San Luis Dam necessitated the relocation of California State Route 152/LRN 32 due to it being located int what was to become the San Luis Reservoir.  The relocation of California State Route 152 would see it realigned north of the planned San Luis Reservoir east from Pacheco Pass.  

The realignment of California State Route 152 north of the planned San Luis Reservoir is discussed in the July/August 1965 California Highways & Public Works.  The realignment of California State Route 152 is cited to be 12 miles in length originating from the Merced/Santa Clara County Line and extending eastward as a divided road to California State Route 207.  The new expressway alignment of California State Route 152 east of Pacheco Pass was opened via dedication ceremony on April 29th, 1965.  The San Luis Reservoir would not be completed until 1967 which would see the original alignment of California State Route 152 east from Dinosaur Point inundated.  The original alignment of California State Route 152 at Dinosaur Point became a boat launch for the San Luis Reservoir Recreation Area.   






Part 2; exploring the original alignment of California State Route 152 east from Pacheco Pass to Dinosaur Point

As modern California State Route 152 eastbound approaches Pacheco Pass in Santa Clara County the original soft transition can be seen razed to the right approaching Dinosaur Point Road.  Pacheco pass lies at an elevation of 1,368 feet above sea level. 




Below is a view looking westward via what was the original alignment of California State Route 152 at Pacheco Pass.  


Former California State Route 152 on Dinosaur Point Road east of Pacheco Pass enters Merced County and skirts the boundary of Pacheco State Park.  Pacheco State Park was created in 1997 from a 6,890-acre grant from the descendants of the Pacheco family.  





Dinosaur Point Road eastbound descends from Pacheco Pass towards the San Luis Reservoir.  Dinosaur Point Road follows the northern boundary of Pacheco State Park until passing through the gate of the San Luis Reservoir Recreation Area at Dinosaur Point.  















During instances where the water level is low in the San Luis Reservoir the former alignment of California State Route 152 can be found below the boat launch at Dinosaur Point.  The descent from Dinosaur Point eastward into the San Luis Reservoir is fairly steep which usually obscures the older alignment of California State Route 152.  First State Highway Bond Act concrete can be found underneath the eroding asphalt as the original grade of California State Route 152 disappears into the San Luis Reservoir.  


















Labels:

Comments

Post a Comment

Popular posts from this blog

Paper Highways: The Unbuilt New Orleans Bypass (Proposed I-410)

By
  There are many examples around the United States of proposed freeway corridors in urban areas that never saw the light of day for one reason or another. They all fall somewhere in between the little-known and the infamous and from the mundane to the spectacular. One of the more obscure and interesting examples of such a project is the short-lived idea to construct a southern beltway for the New Orleans metropolitan area in the 1960s and 70s. Greater New Orleans and its surrounding area grew rapidly in the years after World War II, as suburban sprawl encroached on the historically rural downriver parishes around the city. In response to the development of the region’s Westbank and the emergence of communities in St. Charles and St. John the Baptist Parishes as viable suburban communities during this period, regional planners began to consider concepts for new infrastructure projects to serve this growing population.  The idea for a circular freeway around the southern perimeter of t
Post a Comment
Read more

Hernando de Soto Bridge (Memphis, TN)

By
The newest of the bridges that span the lower Mississippi River at Memphis, the Hernando de Soto Bridge was completed in 1973 and carries Interstate 40 between downtown Memphis and West Memphis, AR. The bridge’s signature M-shaped superstructure makes it an instantly recognizable landmark in the city and one of the most visually unique bridges on the Mississippi River. As early as 1953, Memphis city planners recommended the construction of a second highway bridge across the Mississippi River to connect the city with West Memphis, AR. The Memphis & Arkansas Bridge had been completed only four years earlier a couple miles downriver from downtown, however it was expected that long-term growth in the metro area would warrant the construction of an additional bridge, the fourth crossing of the Mississippi River to be built at Memphis, in the not-too-distant future. Unlike the previous three Mississippi River bridges to be built the city, the location chosen for this bridge was about two
1 comment
Read more

Memphis & Arkansas Bridge (Memphis, TN)

By
  Like the expansion of the railroads the previous century, the modernization of the country’s highway infrastructure in the early and mid 20th Century required the construction of new landmark bridges along the lower Mississippi River (and nation-wide for that matter) that would facilitate the expected growth in overall traffic demand in ensuing decades. While this new movement had been anticipated to some extent in the Memphis area with the design of the Harahan Bridge, neither it nor its neighbor the older Frisco Bridge were capable of accommodating the sharp rise in the popularity and demand of the automobile as a mode of cross-river transportation during the Great Depression. As was the case 30 years prior, the solution in the 1940s was to construct a new bridge in the same general location as its predecessors, only this time the bridge would be the first built exclusively for vehicle traffic. This bridge, the Memphis & Arkansas Bridge, was completed in 1949 and was the third
Post a Comment
Read more