Junipero Serra Boulevard
 |
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| Maintained by | Caltrans and local governments |
|---|---|
| Length | 7.1 mi (11.4 km) |
| South end |
 I-280 in South San Francisco
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| Major junctions |
 SR 1 in Daly City
|
| North end | Sloat Blvd. in San Francisco |
| Construction | |
| Construction start | 1908 |
| Completion | 1952 |
| Inauguration | 1956 |
Junipero Serra Boulevard is a major boulevard in and south of San Francisco named after Franciscan friar Junipero Serra. Within the city, it forms part of the route of State Route 1, the shortest connection between Interstate 280 and the Golden Gate Bridge. The remainder, in San Mateo County, was bypassed or replaced by I-280, the Junipero Serra Freeway. The boulevard was one of several new roads built along the San Francisco Peninsula before the age of freeways, and became a state highway known as Route 237 in 1956, receiving the State Route 117 designation in the 1964 renumbering, only to be deleted from the state highway system the next year. Two other regional highways—Bayshore Highway and Skyline Boulevard—were also upgraded into or bypassed by freeways.
Junipero Serra Boulevard begins at exit 44 (Avalon Drive) of I-280, and travels north along the east side of I-280 as a four-lane divided highway with minimal intersections, just east of the ridge line of the San Francisco Peninsula that Skyline Boulevard (SR 35) travels along. The median ends when it crosses Hickey Boulevard; the portion of Hickey Boulevard east from Junipero Serra Boulevard to El Camino Real (SR 82) was built as part of that portion of Junipero Serra Boulevard to the north. The boulevard continues northwards with occasional intersections, some with access to I-280, before crossing to the west side of I-280 just north of Washington Street in Daly City and back to the east side north of School Street. At John Daly Boulevard, Junipero Serra Boulevard crosses I-280 for the final time and becomes part of SR 1; the northbound lanes simply cross over I-280, merging with the ramp that carries SR 1 from I-280 onto the boulevard, but southbound traffic must pass under Daly Boulevard, exit and loop over the bridge it just passed under, and then turn right onto Junipero Serra Boulevard.
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