California State Route 61

State Route 61
Route information
Defined by S&HC § 361, 412, and 560
Maintained by Caltrans
Length:	6.970 mi (11.217 km) Length of SR 112 is 1.782 mi (3 km) and length of SR 260 is 1.924 mi (3 km)
Existed:	1964 – present
Major junctions
South end:	SR 185 in San Leandro
North end:	I-880 in Oakland
Highway system
State highways in California(list • pre-1964) History • Unconstructed • Deleted • Freeway • Scenic ← SR 60 SR 62 → ← SR 111 SR 113 → ← SR 259 SR 261 →

State Route 61 (SR 61) is a California, United States, highway which runs through Alameda and along the Oakland International Airport. The western terminus is with State Route 260 at Webster Street in Alameda, and it runs along east Central Avenue and Encinal Avenue until reaching Broadway. It goes south along Broadway, then east along Otis Drive until crossing off the island of Alameda on the Bay Farm Island Bridge. It then follows Dolittle Drive near the Oakland International Airport until it reaches State Route 112 at Davis Street in San Leandro.

As legislatively defined, Route 61 extends as far north as Albany and as far south as the Dumbarton Bridge's east approach. Only the portion between Routes 260 and 112 is presently constructed; the unbuilt remainder of the route exists today either as open San Francisco Bay or wetlands. This route would likely have sat atop landfill; as public opinion shifted against filling in the bay, completing the remaining portions of Route 61 also fell out of favor. Route 87 is another highway once proposed to traverse present-day wetlands and open water.

Routes 112 and 260 are "hidden" routes that, despite having legal descriptions separate from Route 61, are currently signed as part of Route 61. Route 112 runs as Davis Street to State Route 185 (East 14th Street) in San Leandro. Route 260 goes to (but does not intersect with) Interstate 880 in Oakland through the Posey and Webster underwater tunnels.

Route description

Route 61 is part of the California Freeway and Expressway System.

The route begins at SR 185 in San Leandro. It then interchanges with Interstate 880. It then continues northward and enters the city of Oakland for a short while and crosses the San Leandro Bay via a drawbridge. It then winds its way northward through the city of Alameda. It then goes under the Oakland Estuary via the Posey and Webster Street Tubes; it then reenters the city of Oakland, where it meets its north end at 7th Street.

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 entire route is in Alameda County.

Location	Postmile	Destinations	Notes
San Leandro	1.78	Callan Avenue	Continuation beyond SR 185
	1.78	SR 185 (East 14th Street)	East end of unsigned SR 112
	0.60	I-880 (Nimitz Freeway) – Oakland, San Jose	Interchange
	R0.00 14.80	Davis Street, Doolittle Drive	West end of unsigned SR 112
Oakland	16.07	98th Avenue to I-880 – Oakland International Airport	Interchange
Alameda	18.55	Bay Farm Island Bridge over San Leandro Bay
	19.44	Otis Street, Broadway
	19.84	Broadway, Encinal Avenue
	21.27	Sherman Street, Central Avenue
	21.97 0.00	Central Avenue, Webster Street	South end of unsigned SR 260
	R0.86	Wilver "Willie" Stargell Avenue	At-grade intersection; former southbound exit and entrance interchange; formerly Mariner Square Drive
	R0.86	Constitution Way, Marina Village Parkway	Interchange; southbound left exit and northbound entrance
	R1.12 R1.20	Posey and Webster Street Tubes under Oakland Estuary
Oakland
	R1.92	7th Street to I-880 (Nimitz Freeway, to I-980 east) – San Francisco, San Jose, Jack London Square	North end of unsigned SR 260
	R1.92	Harrison Street	Continuation beyond 7th Street
1.000 mi = 1.609 km; 1.000 km = 0.621 mi      Concurrency terminus •      Closed/former •      Incomplete access •      Unopened

External links

• Caltrans: Route 61 road conditions
• From California Highways:
  • SR 61
  • SR 112
  • SR 260