State Route 36, 37, 38 and 39 in California

State Route 36 in California

Get started fortune
End Susanville
Length 249 mi
Length 400 km

Mad River

Red Bluff





According to, State Route 36 is a state route in the U.S. state of California. The road forms an east-west route from Fortuna via Red Bluff to Susanville in Northern California and is 400 kilometers long.

Travel directions

State Route 36 begins near the Pacific coast at a junction with US 101 south of Fortuna. The road heads east through sparsely populated mountain areas. The landscape becomes drier to the east. The road covers approximately 180 kilometers through sparsely populated areas to Red Bluff. There are hardly any intersecting roads of importance and there are no places larger than a hamlet on the route. The mountains in the region are up to 1,600 meters high, the road itself runs over an approximately 1,250 meter high mountain pass.

You then reach the northern part of the Sacramento Valley, which is a lot drier. The only town of size is Red Bluff, which is also the largest town on the route. It crosses the Interstate 5. The road then continues through dry land and eventually ascends into the Sierra Nevada. East of Mineral the road leads over a 1,750 meter high mountain ridge. To the north, Lassen Peak is visible. The road then leads along the north side of Lake Almanor, where several small towns are located. The road then leads over the 1,740 meter high Fredonyer Pass. To the east, the road descends slowly to Susanville, where State Route 36 ends at US 395.


State Route 36 has traditionally not been a major thoroughfare, but because it is often the only through east-west route, the road still draws some through traffic. It is a connection through the northern Sierra Nevada.

Traffic intensities

About 4,000 vehicles a day drive close to US 101, but this is quickly dropping to less than 1,000 vehicles a day. Much of the route only handles 300 to 500 vehicles per day between Fortuna and Red Bluff. This peaks at a maximum of 19,000 vehicles in Red Bluff. More east, 1,200 vehicles drive as far as Mineral and only 700 vehicles east of Mineral. Some more traffic is driving along Lake Almanor, about 2,900 to 4,800 vehicles per day. This drops again to 2,000 vehicles further to Susanville.

State Route 37 in California

Get started Novato
End Vallejo
Length 21 mi
Length 35 km
→ San Francisco / Santa Rosa

Marsh Drive

missing link

17 Mare Island

18 Wilson Avenue

20 Fairgrounds Drive

21 → San Francisco / Sacramento

State Route 37 or SR-37 is a state route in the U.S. state of California. The road forms an east-west connection in the north of the conurbation Bay Area, and is the first mainland connection north of San Francisco to the San Pablo and San Francisco Bay. Most of the route is a 2×2 main road, with some highway sections around Vallejo. The road is also called Sears Point Road, and is 35 kilometers long.

Travel directions

The road begins in Novato, a suburb of 48,000 people, on US 101, which runs from San Francisco to Santa Rosa. The road starts as a 2×2 main road, with sporadic level crossings with country lanes. The large connections are on the same level. On the north side of San Pablo Bay, the road becomes a regular main road. You then reach Vallejo, with 117,000 inhabitants, a somewhat larger suburb located 50 kilometers north of San Francisco.


Since the 1950s, there have been proposals to develop the entire route as a freeway, but nothing has come of it. This is because the highway passes through the San Pablo Bay National Wildlife Refuge, which is a conservation area. Originally this was not a nature reserve, in 1977 a dam broke, after which the wetlands arose. In 1992 the part at Vallejo was upgraded to a highway.

Traffic intensities

The road is fairly busy, with intensities ranging from 42,000 in Novato to a peak of 98,000 in Vallejo. The middle part is less crowded with 37,000 vehicles.

State Route 38 in California

Get started redlands
End Big Bear
Length 59 mi
Length 95 km


Big Bear

State Route 38 is a state route in the U.S. state of California. The road forms a route through the San Bernardino Mountains in Southern California, from Redlands to Big Bear and is 95 kilometers long.

Travel directions

State Route 38 begins at a junction with Interstate 10 in Redlands, an eastern suburb of San Bernardino. The road runs along Lugonia Avenue and leaves the urban area after 10 kilometers. After this, the road ascends into the San Bernardino Mountains, through remote wilderness. The road leads past the base of San Gorgonio Mountain, the highest mountain in Southern California at 3,506 meters. The road itself ascends to the 2,573-foot Onyx Summit, Southern California’s highest mountain pass. The road bends north and ends at Big Bear on State Route 18.


Little is known about the history of State Route 38, it has never been a major route. The road is also not the shortest or fastest route from the valley to the resorts in the San Bernardino Mountains.

Traffic intensities

11,000 to 21,000 vehicles drive daily in Redlands, dropping to 2,100 through the San Bernardino Mountains.

State Route 39 in California

Get started Huntington Beach
End Angeles National Forest
Length 50 mi
Length 80 km
Huntington Beach



Buena Park

La Habra

West Covina



Falling Springs

State Route 39 is a state route in the U.S. state of California. The road forms a north-south route through Southern California in the Los Angeles metropolitan area and consists of two sections, a southern section from Huntington Beach to La Habra, and a northern section from West Covina to State Route 2 in the Angeles National Forest. The combined route is 80 kilometers long.

Travel directions

Huntington Beach – La Habra

State Route 39 begins in Huntington Beach on State Route 1, right on the beach of the Pacific Ocean. State Route 39 runs its entire length from Huntington Beach to La Habra through densely populated areas, and the road is an urban arterial with mostly 2×3 lanes, some 2×4 lanes. The entire route up to La Habra is called Beach Boulevard and is one of the major sub-roads in this part of the Los Angeles metro area. The road leads through several suburbs that have grown together. It also crosses numerous freeways, including Interstate 5 and Interstate 405. State Route 39 ends in La Habra at State Route 72.

West Covina – Angeles National Forest

The second part begins 15 kilometers north at a junction with Interstate 10 in West Covina. The road here is called Azusa Avenue and takes about 10 kilometers through a built-up area to beyond the suburb Azusa. Outside of Azusa, the road heads into the San Gabriel Mountains as a winding single-lane road. The road can be driven up to Falling Springs, at an altitude of 1,500 meters. The last 7 miles until State Route 2 is closed to public traffic. This is a spectacular route along ravines at an altitude of more than 2,000 meters.


State Route 39 was originally planned as a through route from Huntington Beach to Azusa and on to State Route 2. There is no route between La Habra and West Covina, although traffic can travel via alternate roads, most prominently Hacienda Road, Hacienda Boulevard and Colima Road. The road’s development followed Orange County’s suburban growth that began as early as the 1940s. The road has changed little in the built-up area since the 1990s.

The northernmost portion of State Route 39 has been closed to the public since 1978 due to the danger of landslides. An alternate eastern route known as East Fork Road was constructed through another canyon between 1936 and 1961, but was never completed.

Traffic intensities

State Route 39 is an extremely busy urban arterial with traffic lights. Most of the route between Huntington Beach and Buena Park is between 65,000 and 84,000 vehicles per day. The section from Buena Park to La Habra is slightly less crowded with 32,000 to 45,000 vehicles. No traffic data is available for the part between West Covina and Azusa. The mountain section in the San Gabriel Mountains first has 2,000 vehicles per day, dropping to less than 200 vehicles per day at the end after Falling Springs.

State Route 39 in California