California State Route 128

Infobox road
state=CA
type=SR
route=128
section=428
maint=Caltrans

---

length_mi=120.52
length_round=2
length_ref= [ [http://www.dot.ca.gov/hq/structur/strmaint/brlog2.htm January 1, 2006 California Log of Bridges on State Highways] ]
direction_a=West
terminus_a=jct|state=CA|SR|1 near Albion
junction=jct|state=CA|US|101 in Cloverdale
jct|state=CA|SR|29 in Calistoga
direction_b=East
terminus_b=jct|state=CA|I|505 in Winters
previous_type=SR
previous_route=127
next_type=SR
next_route=129

State Route 128 is a state highway in the U.S. state of California, passing through the state's Wine Country.

Route description

Route 128 begins at Route 1 near the mouth of the Navarro River at the Pacific Ocean. The highway travels southeast through Navarro River Redwoods State Park and through the Anderson Valley to Boonville. Route 253 terminates into Route 128 at the south end of Boonville. Leaving Boonville, Route 128 climbs out of the Navarro River watershed and crosses the Yorkville Highlands into the Russian River watershed, arriving at Cloverdale in the Alexander Valley, where it joins U.S. Route 101 heading south. A few miles later, at Geyserville, Route 128 separates from U.S. 101 and crosses Knights Valley on the way to Napa Valley, where it joins Route 29 at Calistoga. After passing through the town of St. Helena, Route 128 splits from Route 29 at Rutherford and climbs east over dry ridges above Lake Berryessa to the Sacramento Valley. In Winters, the route's constructed portion ends at Interstate 505. By its legal definition, the route continues convert|14|mi|km|abbr=on|lk=on east to Route 113 at Davis and Interstate 80, but this segment is currently not constructed.

The section of Route 128 through Navarro River Redwoods State Park is often closed in winter storms due to flooding. [citation|first1=Joan L.|last1=Florsheim|first2=Jeffrey F.|last2=Mount|first3=Luke T.|last3=Rutten|title=Effect of baselevel change on floodplain and fan sediment storage and ephemeral tributary channel morphology, Navarro River, California|journal=Earth Surface Processes and Landforms|volume=26|issue=2|year=2000|pages=219–232|doi=10.1002/1096-9837(200102)26:2<219::AID-ESP169>3.0.CO;2-0] A slower alternative route is provided by the Philo-Greenwood road, south of Route 128 on the other side of the river, which connects Route 1 near Elk to Philo near Hendy Woods State Park on Route 128. [ [http://paintbrush-ink.com/MB_online/MCPmaptoIB.html Mendocino Coast Properties Map and Directions] .]

Major intersections

:"Note: Except where prefixed with a letter, postmiles were measured in 1964, based on the alignment as it existed at that time, and do not necessarily reflect current mileage. The numbers reset at county lines; the start and end postmiles in each county are given in the county column."

References

External links

* [http://www.westcoastroads.com/california/ca-128.html California @ WestCoastRoads - State Route 128]
* [http://www.dot.ca.gov/hq/roadinfo/sr128 Caltrans: Route 128 highway conditions]
* [http://www.cahighways.org/121-128.html#128 California Highways: SR 128]