Altadena Drive is one of the major east-west roadways in Altadena, California

Altadena, California

Altadena is an unincorporated area and census-designated place in Los Angeles County, California, United States, approximately from the downtown Los Angeles Civic Center, and directly north of the city of Pasadena, California...

, stretching almost continuously from one end of the town to the other. The road is actually a convergence of several smaller roads which were established over the half century of a growing Altadena community. It begins at a cul-de-sac

Cul-de-sac

A cul-de-sac is a word of French origin referring to a dead end, close, no through road or court meaning dead-end street with only one inlet/outlet...

 at the Arroyo Seco

Arroyo Seco (Los Angeles County)

The Arroyo Seco, meaning "dry stream" in Spanish, is a seasonal river, canyon, watershed, and cultural area in Los Angeles County, California, United States. The Arroyo Seco has been called the most celebrated canyon in Southern California.-River course:...

, the west-most boundary of Altadena, and runs due west as West Altadena Drive to Fair Oaks Avenue

Fair Oaks Avenue (Pasadena, California)

Fair Oaks Avenue in Pasadena, California, is a major north-south road connecting the communities of Altadena, Pasadena, and South Pasadena, running in length. It starts at its southernmost end in South Pasadena at Huntington Drive. It travels due north to a terminus above Loma Alta Ave. in...

 where it becomes East Altadena Drive. At Mendocino Lane it becomes North Altadena Drive which continues into Pasadena

Pasadena, California

Pasadena is a city in Los Angeles County, California, United States. Although famous for hosting the annual Rose Bowl football game and Tournament of Roses Parade, Pasadena is the home to many scientific and cultural institutions, including the California Institute of Technology , the Jet...

 to Colorado Boulevard

Colorado Boulevard

Colorado Boulevard is a major east–west street in Southern California, United States. It runs from Griffith Park in Los Angeles east through Glendale, the Eagle Rock section of Los Angeles, Pasadena, and Arcadia, ending in Monrovia...

 where it becomes South Altadena Drive. The road does not come to any terminus, but its name changes to Santa Anita Avenue (see history section below) and carries into San Marino

San Marino, California

San Marino is a small, affluent city in Los Angeles County, California. Incorporated in 1913, the City founders designed the community to be uniquely residential, with expansive properties surrounded by beautiful gardens, wide streets, and well maintained parkways...

.

The Piedmont

The original name of Altadena Drive from the Arroyo Seco to Lake Avenue

Lake Avenue (Pasadena)

Lake Avenue is a major north-south feeder road for the Pasadena and Altadena communities in Los Angeles County, California. The road was developed in the mid 19th century and takes its name from a lake which was located at its southern most end known variously as Mission Lake, Kewen Lake, and...

 was Piedmont (more rurally it was called “the Piedmont”.) Piedmont is French for foothill, but actually the piedmont is the land which runs up from the coast to the fall line, an imaginary line drawn on a map across the first waterfalls of the rivers leading to the hills. Altadena having no waterfalls, Piedmont is an honorary name. In Altadena the Piedmont separated most of the populating areas of the Woodbury Ranch from the higher lands which developed much later. But the Piedmont became a major east-west traverse in the highlands of Altadena. The name was changed to Altadena Drive in the early 20th century, and only referred to the road that ran from the arroyo to Lake Avenue.

East of Lake

The Altadena development established by the Woodburys occurred west of Lake Avenue. But as more interest grew on the east side, more roads were developed. One was named Prospect Drive which really had no alignment with the Piedmont, but it was close. Prospect ran from Lake Avenue to Holliston, about a half mile. Past that there was no real road development mostly for the fact that there was no real estate development there. Prospect was aligned with Lake Avenue with a diagonal intersection to allow the traffic flow to be uninterrupted by hard turns.

In 1964 this intersection was reworked into a four lane divided highway to accommodate higher volumes of traffic in the intersection and to further smooth the harsh turning required to negotiate the alignment.

Santa Anita Drive

In 1905 the Mount Wilson Toll Road

Mount Wilson Toll Road

The Mount Wilson Toll Road is a historic roadway which ascended Mount Wilson via a vehicular passable road from the base of the foothills in Altadena. It was accessible from Pasadena via Santa Anita Avenue which drove right to the front porch of the toll house...

 was opened at the site of present-day Altadena Drive and Mendocino Lane. It accommodated hikers and equestrians for a nominal fee. The road became auto worthy by 1917. Access to the toll road from Pasadena was via Santa Anita Drive which came up along the Eaton Canyon

Eaton Canyon

Eaton Canyon is a major canyon beginning at the Eaton Saddle near Mount Markham and San Gabriel Peak in the San Gabriel Mountains in the Angeles National Forest, USA. Its drainage flows into the Rio Hondo river and then into the Los Angeles River...

 specifically for that purpose. Santa Anita Avenue was already named on the west side by the Woodburys in 1887.

Eventually the section called Prospect hooked up across the highlands to Santa Anita Drive, forming a continuous road from the Arroyo across town and down into Pasadena. This complete stretch of roadway was then named Foothill Boulevard. In 1912 the development of Altadena Country Club Park established among its roads Mendocino Lane which intersects Altadena Drive at a point where it turns south. This becomes the divider between East Altadena Dr. and North Altadena Dr. addresses.

The new Altadena Drive

The problem arising from this naming was that an east-west Foothill Boulevard existed in East Pasadena, and the convergence of these two roads lead to a confusion. In 1957 Foothill Boulevard in Altadena was renamed Altadena Drive — the whole stretch of it — all the way to Colorado Boulevard. South of Colorado, the street name became South Santa Anita Avenue, not to be confused with either the Santa Anita Avenue in Altadena, nor the one in Arcadia. Later the name Altadena Drive was extended south to Del Mar Avenue.

Traffic at the Lake Avenue intersection grew ever increasingly over the second half of the 20th century. The acute offset of the crossing Altadena Drive created confusion and havoc especially for the fact that Lake Avenue has an 8% grade at that point which gives great impetus to downhill speeds. A small spur road was created to allow traffic turning South on Lake to have a more direct route. This created a triangle in which was situated a Highland Junior restaurant (Junior’s for short). The roads virtually wrapped around the building. Prior to that was a Phillips 66 gas station.

In 1964 the County road department took a very aggressive approach in creating a smoother intersection. They acquired a couple of properties on the northwest corner, one of which was an old Richfield (of Atlantic Richfield Oil Company [ARCO]) and a few older houses some of which had been turned into business frontages. The idea was to create a greater alignment of the thoroughfare with a smoother, rounder crossing. Second, was the developing of a four lane crossing with a center divider. This four lane begins on the west end about 900 feet (270 m) from Lake and continues to maiden lane, a full block east of Lake. Then the roadway was moved north enlarging the triangle. The spur on the south was named Fontanet Drive.

Speeding

Over the past decade complaints began being lodged against speeding along Altadena Drive. The drive was eventually surveyed and posted 35 mph (60 km/h) and Radar Enforced from one end in Altadena to the other. The California Highway Patrol had written several speeding citations during the first few weeks after the posting.