Skip to main content

California State Route 242

After driving the Warren Freeway on California State Route 13 east via CA 24 and Interstate 680 to drive California State Route 242.


CA 242 is a 3 mile freeway in Contra Costa County which runs northward from I-680 in Pleasant Hill to CA 4 in Concord .  CA 242 is a former segment of what was once a much larger CA 24 which was routed through the area on Legislative Route Number 75 in 1935 when it was extended to Berkeley from Sacramento.

The route of CA 24 from originally used the following alignment prior to the present CA 242 freeway being completed:

-  CA 24 was multiplexed with CA 21 north from Walnut Creek to Pleasant Hill.  CA 24/CA 21 entered Pleasant Hill on Contra Consta Boulevard where CA 24 split on Monument Road towards Concord.
-  CA 24 entered Concord on Monument Road which becomes Galindo Street entering downtown.
-  CA 24 exited downtown via Willow Pass Road which continued to CA 4.

The original alignment of CA 24 on the current CA 242 corridor can be seen on the 1938 State Highway Map.

1938 State Highway Map

By 1946 a new proposed alignment of CA 24 bypassing downtown Concord along what essentially is the modern CA 242 corridor is shown on the State Highway Map.

1946 State Highway Map

CA 24 was realigned by 1948 on a partially constructed Concord Bypass.  CA 24 was routed out of downtown Concord via Concord Avenue to the new limited access grade which is now the northern extent of CA 242.

1948 State Highway Map

In 1959 a new proposed cut-off route for CA 24 which would take a wide bypass of Concord to Antioch was assigned as LRN 256 according to CAhighways.org.

CAhighways.org on LRN 256

LRN 256 can be seen on the 1960 State Highway Map.

1960 State Highway Map

During the 1964 State Highway renumbering the planned path of LRN 256 was assigned to LRN 24.  CA 24 from Pleasant Hill to Concord stayed signed as CA 24 but was assigned LRN 242.

1963 State Highway Map

1964 State Highway Map

By 1965 the Concord bypass was completed and what is essentially modern CA 242 took form.

1965 State Highway Map

Interestingly CA 24 signage on the Concord bypass isn't changed on State Highway maps until 1988.  CA 24 appears to have been cut back to Walnut Creek at I-680 by 1988. 

1986 State Highway Map 

1988 State Highway Map

According to CAhighways.org the entire route of CA 242 appears to have been fully converted to freeway standards by 1992.  The planned route of CA 24 via what was LRN 256 appears to have never been officially cancelled.

CAhighways.org on CA 24

My approach to CA 242 was via CA 24 east and I-680 north.  The photo below is the eastern terminus of CA 24 at I-680 in Walnut Creek.  As described above it was wasn't until the late 1980s when the I-680/CA 24 multiplex was elminated.


I-680 north meets CA 242 at Exit 50 at a split junction.  I-680 essentially follows the former path of CA 21 whereas CA 242 obviously is the former path of CA 24.




As CA 242 north begins it almost immediately enters Concord.


CA 242 north has exits for; Clayton Road, Concord Avenue, Grant Street and Olivera Road before the terminus at CA 4.  The north terminus of CA 242 includes ramps to both CA 4 west and CA east.








Comments

Popular posts from this blog

New River Gorge National River Area To Become A National Park

Great news for those that enjoy National Parks, West Virginia's New River Gorge Region, or West Virginia tourism.  Included within the Fiscal Year 2021 Omnibus Appropriations Bill signed by President Trump last night (December 27th) is the New River Gorge Park and Preserve Designation Act.   The act will designate the existing New River National River and over 72,000 acres of land within it as a National Park and Preserve. The New River Gorge Bridge will continue to be the centerpiece of the new New River Gorge National Park and Preserve. (Adam Prince, 2007) The river and surrounding land, which was added to the National Park System in 1978, will be our 63rd National Park.   The designation preserves over 7,000 acres as a National Park.  This area will not allow any hunting.  The remaining 65,000 acres of the existing park will be designated as a preserve allowing hunting and fishing. The main attractions to the New River Gorge - whitewater rafting, camping, hiking, mountain bikin

Douglas Memorial Bridge; the ruins of US Route 101 and the Redwood Highway over the Klamath River

Near the village of Klamath in southern Del Norte County, California sits the ruins of Douglas Memorial Bridge which once carried US Route 101 and the Redwood Highway over the Klamath River.  The Douglas Memorial Bridge was a arch concrete span which once crossed the Klamath River.  The Douglas Memorial Bridge was noted for it's unique grizzly bear statues which still adorn the remains of the structure.  Completed in 1926 the Douglas Memorial Bridge was the original alignment of US Route 101 ("US 101") and stood until it was destroyed by the Christmas Floods of 1964.  The Douglas Memorial Bridge is named in honor of G.H. Douglas who was a Assemblyman of the First District of California.  Below the Douglas Memorial Bridge can be seen during it's prime (courtesy bridgehunter ).  Part 1; the history of the Douglas Memorial Bridge The history of what would become US 101/Redwood Highway begins with the approval of the 1909 First State Highway Bond Act .  The First Stat

The Great PA 48 Clearance Sale

It's not often that any department of transportation sells land it purchased.  They are usually in the business of acquiring land for right-of-way.  But in 1982, the Pennsylvania Department of Transportation did exactly that.  Offering to buyers land it purchased just 15 years earlier for the never-built Route 48 Expressway. Background: The sale was a result of the 1970s cash crunch the PennDOT experienced.  Many projects were cut back, shelved, or eliminated.  The 'New 48', or the North-South Parkway, which was touted for nearly 20 years as a connection from the industrial Mon Valley to the Turnpike and Monroeville was one of the casualties. In the mid-late 1960s, movement to construct the new highway began with targeting a two-mile stretch of highway from the Route 48 intersection at Lincoln Way in White Oak to US 30 in North Versailles.  The plan was then to continue the highway northwards to Monroeville.  Extension south across the Youghiogheny River and to PA 51 would