Sunset Tunnel

Sunset Tunnel
	The western portal of the Sunset Tunnel
Overview
Line	N Judah
Location	San Francisco, California
Coordinates	East portal:; 37°46′09″N 122°26′04″W / 37.76917°N 122.43444°W; West portal:; 37°45′59″N 122°26′55″W / 37.76639°N 122.44861°W
System	Muni Metro
Start	Duboce Av. & Noe St.; Duboce Park
End	Carl St. & Cole St.; Richard Gamble Memorial Park
No. of stations	None
Operation
Opened	October 21, 1928; 95 years ago
Owner	San Francisco Municipal Transportation Agency
Operator	San Francisco Municipal Railway
Character	Underground tunnel for ; light rail/streetcar line
Technical
Line length	4,232 ft (1,290 m; 0.8015 mi)
No. of tracks	2
Track gauge	4 ft 8+1⁄2 in (1,435 mm); (standard gauge)
Electrified	Overhead lines, 600 V DC
Tunnel clearance	23 ft (7.0 m)

The Sunset Tunnel is a 4,232 ft (1,290 m)-long^[1] light rail/streetcar tunnel in San Francisco, California. The tunnel runs under the steep hill adjacent to Buena Vista Park and is used exclusively by the N Judah Muni Metro line.

The tunnel was opened on 21 October 1928 in a ceremony presided over by Mayor James Rolph.^[1] The eastern entrance is located at Duboce and Noe streets on the south side of Duboce Park in the Duboce Triangle neighborhood, and the western portal is located in Richard Gamble Memorial Park near the intersection of Carl and Cole streets in the Cole Valley neighborhood.

Access to the tunnel is restricted to San Francisco Municipal Railway light rail trains only. Despite the access limitations, this tunnel is not well protected, and is constantly vandalized and graffiti-strewn. From time to time, automobile drivers manage to drive their cars into the tunnel.^[2]^[3]