British Columbia Highway 4

Infobox road
province=BC
type=BC
route=4
maint=


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previous_type=Hwy
previous_route=3B
next_type=Hwy
next_route=5

Highway 4, known locally as the "Alberni Highway" and the "Pacific Rim Highway", is the longest east-west main vehicle route on Vancouver Island, with a total length of 163 km (101 mi). The highway to Port Alberni was completed in 1942, and has been designated as Highway 4 since 1953.

Route details

. Highway 4 veers directly west upon meeting this junction.

The majority of Highway 4's length is composed of a two-lane configuration. An abandoned spur of the E&N Railway parallels Highway 4 all the way from the coast to the city of Port Alberni.

West of Coombs, Highway 4 travels for 11 km (7 mi) before meeting the body of water known as Cameron Lake. After Highway 4 leaves Cameron Lake, it begins to wind its way through MacMillan Provincial Park, which includes the well-known area of Cathedral Grove. 20 km (12 mi) west of Cameron Lake, Highway 4 reaches a spur that travels into the city centre of Port Alberni. Highway 4 actually goes through land belonging to the city of Port Alberni starting 2 km (1¼ mi) west of the main spur into the city and lasting 5 km (3 mi), after which Highway 4 finally leaves Port Alberni via a bridge over the Somass River. The ensuing segment of highway from the Somass River to the small community of Tofino on the west coast of the Island was opened to traffic in 1961.

. Highway 4 goes through the national park for 22 km (14 mi) northwest, finally terminating 11 km (7 mi) later at Tofino.----

Highway 4A is the previous alignment of Highway 4 east of Coombs. The '4A' designation was originally assigned in 1968 to the current section of Highway 4 between Coombs and Qualicum Beach. The 4 and 4A alignments east and north of Coombs, respectively, switched designations when the Parksville to Mud Bay section of the Inland Island Highway was completed in 1996. This older spur of Highway 4 terminates in the east at Parksville, 10 km (6 mi) from Coombs.

The Highway 4 designation does not officially apply to the B.C. portion of the Haines Highway.