California State Route 61

The combined SR 112/61/260 route begins at SR 185 in San Leandro. Running along Davis Street, it then interchanges with Interstate 880 before it heads to Doolittle Drive. It then continues northward along Doolittle Drive and enters the city of Oakland, running along the eastern boundary of Oakland International Airport. The highway then enters the city of Alameda at Bay Farm Island before crossing the San Leandro Bay via a drawbridge to Alameda Island. SR 61 then goes west along Otis Drive, then north along Broadway until reaching Encinal Avenue. The route then heads west on Encinal Avenue and Central Avenue to Webster Street. The highway then runs across Webster Street and through the Posey and Webster Street tubes before terminating at I-880 and 7th Street in Oakland. The route does not directly intersect with I-880 here, so drivers are instructed to get onto I-880 south via Oak Street or I-880 north via Jackson Street. There are two tube entrances on the Oakland side, one on Webster Street, and the other at the intersection of Broadway and 5th Street; the latter can be reached from I-880's Broadway off-ramps.

California's legislature has relinquished state control of the segment along Webster Street between Central Avenue and Atlantic Avenue, and thus that portion is now maintained by the City of Alameda.[5]

SR 61 is part of the California Freeway and Expressway System,[6] and all three routes are part of the National Highway System,[7] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[8]

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Alameda County.

Location	Postmile [1][9][10]	Destinations	Notes
San Leandro	1.78[N 1]	Callan Avenue	Continuation beyond SR 185
	1.78[N 1]	SR 185 (East 14th Street)	South end of SR 61; east end of unsigned SR 112
	0.60[N 1]	I-880 (Nimitz Freeway) – Oakland, San Jose	Interchange; I-880 exit 34; former SR 17
	R0.00[N 1] 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
	21.97 0.00[N 2]	Central Avenue, Webster Street	North end of state maintenance
	​	Atlantic Avenue, Ralph Appezzato Memorial Parkway	South end of unsigned SR 260 and state maintenance
	R0.86[N 2]	Wilver "Willie" Stargell Avenue	At-grade intersection; former southbound exit and entrance interchange; formerly Mariner Square Drive
	R0.86[N 2]	Constitution Way, Marina Village Parkway	Interchange; southbound left exit and northbound entrance
Alameda–Oakland line	R1.12[N 2] R1.20[N 2]	Posey and Webster Street Tubes under Oakland Estuary
Oakland	​	Broadway, 5th Street	Southbound entrance only
	R1.92[N 2]	7th Street to I-880 (Nimitz Freeway) / I-980 east – San Francisco, San Jose, Jack London Square	North end of SR 61 and unsigned SR 260
	R1.92[N 2]	Harrison Street	Continuation beyond 7th Street; southbound entrance accessible from Webster Street
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access

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Wikimedia Commons has media related to California State Route 61.

• Caltrans: State Route 61 highway conditions
• Caltrans Traffic Conditions Map
• California Highway Patrol Traffic Incidents
• California @ AARoads.com - State Route 61
• From California Highways:
  • SR 61
  • SR 112
  • SR 260