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Unsigned State Route 260

Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.

Routing Routing

Rte 260(a) Route 260 is from Route 61 in Alameda to Route 880 in Oakland near Seventh and Harrison Streets.

(b) The relinquished former portion of Route 260 within the City of Alameda between Central Avenue and Atlantic Avenue is not a state highway and is not eligible for adoption under Section 81. For this relinquished former portion of Route 260, the City of Alameda shall maintain within its jurisdiction signs directing motorists to the continuation of Route 260.

Post 1964 Signage History Post 1964 Signage History

In 1965, Chapter 1372 created Route 260 via a transfer from Route 61. The definition was: “Route 61 in Alameda to Route 17 in Oakland near Seventh and Harrison Streets”. That same year, Chapter 1371 reiterated the conditions that had accumulated for the previous legislative version of the route, LRN 226:

“361.1 Upon the completion of the additional subterranean tube between the Cities of Oakland and Alameda, in the vicinity of Webster Street, to be used in connection with the Posey Tube, both of which tubes are included in the description of Route 61, the department may by executive order, rule, or regulation, designate both of said tubes, and the approaches leading to or from the nearest state highway or city street, as one-way highways, and thereafter restrict said tubes and approaches to one-way traffic, proceeding in opposite directions as to each other. Upon the placing of signs notifying the public of such restrictions, any person who wilfully fails to observe such sign is guilty of a misdemeanor.”

“361.2 Because of the statewide interest in navigation, the state will hold and save the United States of America free and harmless from liability for damages to the parallel tubes between the Cities of Oakland and Alameda included in the description of Route 61 due to the initial dredging work and subsequent maintenance dredging in an area within 50 feet of said tubes in connection with the deepening of the Oakland Estuary by the Corps of Engineerings of the United States Army and the Director of Finance shall execute an agreement so to do with the proper representatives of the United States of America.”

In 1968, Chapter 282 renumbered sections 361.1 and 361.2 from Route 61 (§361) to Route 260 (§560), and updated the sections to refer to Route 260.

In 1984, Chapter 409 changed "Route 17" to "Route 880".

On August 30, 2004, AB 2027 was signed. This authorized the California Transportation Commission to relinquish to the City of Alameda the portion of Route 260 that is located within the Alameda city limits that is between Atlantic Avenue and Central Avenue, upon the terms and conditions the commission finds to be in the best interests of the state, if the commission and the city enter into an agreement providing for that relinquishment. The relinquishment becomes effective immediately following the recordation by the county recorder of the relinquishment resolution containing the commission's approval of the terms and conditions of the relinquishment. At that point, the relinquished portion of Route 260 shall cease to be a state highway, and cannot be considered for readoption. Furthermore, the City of Alameda is required to maintain within its jurisdiction signs directing motorists to the continuation of Route 260.

Based on the new bill, in December 2004 the CTC considered relinquishment of a portion of Route 260 right of way in the City of Alameda, between Atlantic Avenue and Central Avenue, under terms and conditions as stated in the cooperative agreement dated May 21, 2004, determined to be in the best interest of the State. Authorized by Chapter 325, Statutes of 2004, which amended Section 560 of the Streets and Highways Code. This appears to have been the work of the West Alameda Business Association (WABA), as reported in San Francisco Bay Crossings. This article talks about the changes to the street now that the highway designation has been dropped:

As a highway, the street had to be as wide as possible and well lit, leaving darkened narrow sidewalks. Sidewalks are being widened, and sidewalk furniture will be installed along with much-anticipated Acorn Street Lights. The old trees have been removed, and they will soon be replaced by a variety of flowering trees. Putting utilities underground will also improve the look of the street, making it a lovely street for strolling. Buses run regularly along the street, and the ferry is close by.

In 2010, Chapter 421, SB 1318, 9/29/10, changed the start of the route: "Route 61 Atlantic Avenue in Alameda to ..."

Pre 1964 Signage History Pre 1964 Signage History

This route was part of LRN 226, defined in 1947. Before that, portions were part of LRN 69.

Status Status

Although a distinct route from Route 61, this route is signed in its entirety as Route 61.

Named Structures Named Structures

George A. Posey TubeTunnel 33-0106R, the tube between Alameda and Oakland that goes beneath the Oakland Estuary, is named the "George A. Posey Tube". It is named for George A. Posey, the engineer who devised its construction. This construction required sinking precast concrete segments into a trench running along the floor of the Oakland Estuary, and includes a ventilation system (designed by Posey) that placed high-powered fans in the portals on either end of the tube. The tube runs beneath the floor of the estuary. Construction started in 1925 and was completed in 1928.
(Image source: Bridgehunter; Oakland LocalWiki)

The other tunnel (33-0106L) is unofficially called the "Webster Street Tube". It was built in 1963.

Classified Landcaped Freeway Classified Landcaped Freeway

The following segments are designated as Classified Landscaped Freeway:

County Route Starting PM Ending PM
Alameda 260 R0.84 R1.20

Other WWW Links Other WWW Links

Statistics Statistics

Overall statistics for Route 260:

Pre-1964 Legislative Route Pre-1964 Legislative Route

In 1959, Chapter 1062 defined LRN 260 as “[LRN 238] to [LRN 4] north of the Calaveras River”. This is present-day unconstructed Route 235 between present-day I-5 and Route 99.

Acronyms and Explanations:

Back Arrow Route 259 Forward Arrow Route 261

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