State Route 26 in California

State Route 24, 25 and 26 in California

State Route 24 in California

Get started Oakland
End Walnut Creek
Length 14 mi
Length 22 km
2 → San Francisco / San Jose

3 Telegraph Avenue

4 Broadway

5 → Castro Valley

6 Tunnel Road

Caldecott Tunnel 1,149 m

7 Wilder Road

9 Orinda

10 St Stephens Drive

11 Acalanes Road

12 Oak Hill Road

14 Pleasant Hill Road

15 → Sacramento / San Jose

According to Simplyyellowpages, State Route 24 or SR-24 is a state route in the U.S. state of California. The highway is in the northeast Bay Area metropolitan area, and runs from Oakland to Walnut Creek. It is the primary commuter route from the suburbs around Concord and Antioch to the major cities of Oakland and San Francisco. There is also a tunnel in the highway, the Caldecott Tunnel. The highway is also known as the Grove Shafter Freeway on the section east of the tunnel. The highway is 22 kilometers long.

Travel directions

The highway begins at a major interchange with I-580, which runs from San Rafael to Castro Valley, and I-980, which runs through downtown Oakland. There are 2×4 lanes available here, and a BART (Bay Area Rapid Transit) light rail runs in the median strip. Just before the SR-13, the BART leaves the central reservation. The SR-24 then runs through suburbs, reaching the Caldecott Tunnel, a tunnel with 3 tunnel tubes, one of which is a switch tube, which can be used in the rush hour direction. After the tunnel one enters suburbs with low densities. This is a scenic route. The first suburb is Orinda, a wealthy suburb of 18,000 inhabitants, hidden in forests. Here the BART line will again run into the central reservation. The next suburb is Lafayette, with 24,000 inhabitants. The highway ends in Walnut Creek, a larger suburb of 65,000, on I-680, the eastern bypass of the metropolitan area.


Between 1934 and 1937, the first two tubes of the Caldecott Tunnel were constructed. The tunnel opened to traffic on December 5, 1937. Construction coincided with the construction of the San Francisco-Oakland Bay Bridge, creating a rapid east-west route from Contra Costa County to San Francisco. In the late 1950s, the connecting road to Oakland and Walnut Creek was upgraded to a 2×2 divided highway, which was leveled in 1969-1970. In 1971, the freeway was fully completed between Oakland and Walnut Creek with the opening of the last freeway overpasses.

A third tunnel tube was constructed at the Caldecott Tunnel between 1960 and 1964. A right-of-way had already been purchased for this in the 1930s. The third tube opened in October 1964, after which the two old tubes were renovated. After that, the middle tube was used as an interchangeable track, as one of the first interchangeable tracks in the world. A fourth tunnel tube was constructed at the Caldecott Tunnel between 2010 and 2013. It was opened to traffic on November 18, 2013.

Opening history

From Unpleasant Length Date
5 9 Camino Pablo 6 km 00-00-1964
9 Camino Pablo 11 Mount Diablo Boulevard 3 km 00-00-1969
11 Mount Diablo Boulevard 15 6 km 00-00-1970
2 5 5 km 00-00-1970

Traffic intensities

Exit Place 2008 2013 2016
Exit 2 Oakland ( I-580 ) 129,000 147,000 145,000
Exit 5 Oakland ( SR-13 ) 151,000 150,000 164,000
Exit 15 Walnut Creek ( I-680 ) 177,000 187,000 200,000

State Route 25 in California

Get started Priest Valley
End Gilroy
Length 75 mi
Length 120 km
Tres Pinos


State Route 25 is a state route in the U.S. state of California. The road forms a north-south route through the central west of the state, from Priest Valley to Gilroy. State Route 25 is 120 kilometers long.

Travel directions

State Route 25 begins in uninhabited land at an intersection with State Route 198. The road heads north through the Diablo Range, a mountain range with peaks up to approximately 1,500 meters. There are actually no places on the route on the first 100 kilometers. The largest and actually only place of size on the route is Hollister, located in an agricultural valley. Hollister has completed State Route 25 with 2×2 lanes. The road then ends south of Gilroy on US 101, about 31 miles south of San Jose.


Little is known about the history of State Route 25. Actually, only the part between Hollister and Gilroy has a passing interest, on the rest of the route there is hardly any civilization to be found, the road leads through desolate area here. In about 2008 the road in Hollister was rerouted over a new 2×2 lane route.

Traffic intensities

Much of the route has only 100 to 500 vehicles per day. In Hollister the road is quite busy, with 16,000 to 22,000 vehicles per day. There are 20,000 vehicles per day between Hollister and Gilroy.

State Route 26 in California

Get started Stockton
End Pioneer
Length 62 mi
Length 100 km


Valley Springs

Mokelumne Hill

Happy Valley

West Point


According to itypejob, State Route 26 is a state route in the U.S. state of California. The road forms an east-west route through the Central Valley and the Sierra Nevada, from Stockton to Pioneer. State Route 26 is 100 kilometers long.

Travel directions

State Route 26 begins on the outskirts of the larger town of Stockton at a junction with State Route 99. The first 30 kilometers leads through a fairly flat and agricultural area, after which you enter the foothills of the Sierra Nevada. There are a number of exurbs up the slopes here. East of Valley Springs is a short double number with State Route 12. The road then climbs further and crosses some not too deep canyons. The highest point of the road is more than 900 meters above sea level. The road ends west of Pioneer on State Route 88.


The road was originally numbered State Route 8, which was changed to State Route 26 in 1964. The road has somewhat secondary importance, since parallel connections do run through the Sierra Nevada, while State Route 26 does not. The road mainly serves some villages and exurbs on the slopes of the Sierra Nevada.

Traffic intensities

20,000 vehicles drive daily at the junction with State Route 99 in Stockton, which descends rapidly outside the city, with 7,000 vehicles to Linden and 4,000 to 8,000 vehicles to Valley Springs. Only 500 vehicles drive east of Happy Valley, rising again to 1,500 vehicles on the final stretch to Pioneer.

State Route 26 in California