California 4 east
Winding southeast from the interchange with Cummings Skyway, California 4 traverses Franklin Canyon en route to Martinez. Photo taken 04/02/04.
A reassurance marker was posted beyond the entrance ramp from Mc Ewen Road (Exit 6 on SR 4 west). It was removed after 2011. Photo taken 04/02/04.
Continuing east, California 4 rises above adjacent Franklin Canyon. Photo taken 04/02/04.
Interchange sequence sign posted 1.5 miles ahead of the diamond interchange (Exit 9) with Alhambra Avenue in the city of Martinez. Photo taken 04/02/04.
Alhambra Avenue serves residential areas through Alhambra Valley, located between Mount Helen and Martinez Ridge. Photo taken 04/02/04.
The John Muir National Historic Site, which is the location of the mansion in which John Muir lived between 1890 and his death in 1914, is located just off of Alhambra Avenue north of California 4. Photo taken 04/02/04.
California 4 eastbound reaches Exit 9 for Alhambra Avenue. Home to around 35,000, Martinez is the seat of Contra Costa County. The city is the birthplace of the martini, which was first publicized outside of Martinez in 1849. Photo taken 04/02/04.
California 4 arcs across the south side of Martinez through the two succeeding interchanges. Photo taken 04/02/04.
Entering the diamond interchange (Exit 10) with Center Avenue on California 4 east. Center Avenue comprises a commercial arterial extending south from Pine Street and Howe Road. Photo taken 04/02/04.
California 4 advances one mile east from Center Avenue to a diamond interchange (Exit 11) with Morello Avenue. Photo taken 04/02/04.
Two miles ahead of Interstate 680 on California 4 east in Martinez. Photo taken 04/02/04.
Exit 11 departs California 4 east for Morello Avenue, an arterial route through southeast Martinez. Glacier Drive ties into the frontage road system of John Muir Parkway one mile to the east. Photo taken 04/02/04.
John Muir Parkway leaves the Martinez city limits through unincorporated areas of Contra Costa County at the upcoming exchanges with Pacheco Boulevard and I-680. Photo taken 07/06/06.
The city of Concord lies six miles ahead, though California 4 enters the municipality at Exit 13. Photo taken 07/06/06.
Still ahead of the off-ramp for Pacheco Drive (Exit 12A), guide signage references the full cloverleaf interchange (Exits 12B/C) with I-680. Interstate 680 is the main north-south freeway corridor through the San Ramon Valley to the south and to the Solano Lowlands to the north. Photo taken 07/06/06.
Pacheco Boulevard leads northwest into Downtown Martinez and southeast into Pacheco and Pleasant Hill. Photo taken 07/06/06.
Entering the folded diamond interchange (Exit 12A) with Pacheco Boulevard on SR 4 east. Exit 12B quickly follows for I-680 south to SR 24 en route to San Jose. Photo taken 07/06/06.
Interstate 680 runs south between the cities of Pleasant Hill and Concord to Walnut Hill and the exchange with SR 24. Photo taken 07/06/06.
Exit 12B leaves SR 4 (John Muir Parkway) east for I-680 south to SR 24 west for Oakland and San Francisco and I-580 east to the Central Valley, Fresno, and Southern California. Photo taken 07/06/06.
Signs at Exit 12C were installed in 2004. North from SR 4, I-680 spans the Benicia-Martinez Bridge to I-780 west at Benicia and I-80 at Fairfield. Photo taken 07/06/06.


 


Photo Credits:

04/02/04, 07/06/06 by AARoads

Connect with:
Interstate 680

Page Updated 07-19-2018.