California State Route 299

State Route 299
SR 299 highlighted in red
Route information
Maintained by Caltrans
Length	305.777 mi[1] (492.100 km)
Tourist routes	Trinity Scenic Byway
Major junctions
West end	US 101 in Arcata
Major intersections	SR 96 in Willow Creek SR 3 from Weaverville to Douglas City I-5 in Redding SR 139 from Adin to Canby US 395 from Alturas to near Surprise Station
East end	Former SR 8A towards Vya, NV
Location
Country	United States
State	California
Counties	Humboldt, Trinity, Shasta, Lassen, Modoc
Highway system
State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
← SR 284 → SR 330

State Route 299 (SR 299) is an east–west state highway in the U.S. state of California that runs across the northern part of the state. At 305.777 miles (492.100 km), it is the third longest California state route, after Route 1 and Route 99, and the longest east-west route. Route 299's western terminus is at US 101 at the northern edge of Arcata, and its eastern terminus is at the Nevada state line at a point east of Cedarville. Between Arcata and Redding, Route 299 intersects with State Route 96, and is briefly co-signed with State Route 3. In Redding, it intersects with State Route 273, State Route 44, and Interstate 5. East of Redding, it intersects with State Route 89, and a section is co-signed with State Route 139 before reaching Alturas. It is then co-signed with U.S. Route 395 northeast of Alturas, and then runs east through Cedarville and to the border with Nevada. A ghost town, Vya, Nevada, can be reached via this route, which after the border becomes a dirt road, which was formerly Nevada State Route 8A. The segment of SR 299 between Arcata and Redding is the Trinity Scenic Byway, a National Forest Scenic Byway.^[2]

SR 299 begins in Arcata at a trumpet interchange with US 101 as a freeway. The route has another trumpet interchange with SR 200 after leaving the Arcata city limits and crossing the Mad River. The freeway ends in the city of Blue Lake as SR 299 continues east past the truck scales. SR 299 enters Six Rivers National Forest and intersects SR 96 at Willow Creek. Soon after this, SR 299 crosses into Trinity County and Trinity National Forest. Paralleling the Trinity River, SR 299 passes through Salyer (where there is a rest area), Hawkins Bar, Burnt Ranch, Del Loma, Big Bar, Helena, Junction City, and finally Weaverville.^[3]

In Weaverville, SR 299 runs concurrently with SR 3 southbound to Douglas City, where there is a rest area. SR 299 continues east away from the Trinity River into Shasta County, passing by the Whiskeytown-Shasta-Trinity National Recreation Area and through the towns of Tower House and Whiskeytown as well as Whiskeytown Lake. SR 299 continues along Eureka Way through the town of Shasta into the city of Redding.^[3] SR 299 then runs concurrently along SR 273 north and Market Street across the Sacramento River before turning east onto its own freeway and intersecting I-5.^[4] SR 299 remains a freeway for a few miles before leaving the Redding city limits and passing through the town of Bella Vista and into the foothills of the southern Cascade Range.^[3]

SR 299 continues through Ingot, Round Mountain, Montgomery Creek, Hillcrest (after the rest area), Burney, and Johnson Park. The highway intersects with SR 89 before continuing through Fall River Mills and McArthur, where there is an intersection with CR A19. SR 299 then crosses into Lassen County, where it passes through Nubieber and Bieber before intersecting CR A2. The highway crosses into Modoc County and passes through Adin, where it runs concurrently with SR 139 and passes through Modoc National Forest. The concurrency lasts for several miles before SR 299 turns east and enters the city of Alturas. SR 299 runs concurrently with US 395 before turning east again and passing through Cedarville, near the Cedarville Airport. SR 299 ends at the Nevada state line,^[3] connecting with the unpaved former Nevada State Route 8A.

SR 299 is part of the California Freeway and Expressway System,^[5] and from US 101 to SR 3 and from SR 139 to the eastern junction with US 395 is part of the National Highway System,^[6] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.^[7] Three sections of SR 299 are eligible for inclusion in the State Scenic Highway System: from US 101 to SR 96, from SR 3 to I-5, and from SR 89 to SR 139;^[8] however, none are officially designated as a scenic highway by the California Department of Transportation.^[9]

U.S. Route 299
Location	Alturas–Arcata
Existed	1934–1964

State Route 299, from the intersection with US 101 all the way to US 395 in Alturas, was U.S. Route 299 from 1934 to 1964. This was a spur of US 99 running East and West from the junction in Redding, now signed as CA 273 at the intersection of Eureka Way and Market St. The actual road has been realigned many times, mainly to make easier grades and curves through the mountains, but also to make room for the Whiskeytown Lake reservoir. In many places, especially in Trinity County, the old roadway can be seen beside the new road, and there are even several bridges visible from the current 299 that seemingly connect nothing to nothing nowadays, one of which is an arch bridge from 1923. In 1934, 299 was the original State Route 44.

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).^[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County	Location	Postmile [1][10][11]	Exit [12]	Destinations	Notes
Humboldt HUM 0.00-43.04	Arcata	0.00		US 101 – Arcata, Eureka, Crescent City	Western terminus; US 101 exit 716A
		0.72	1	Guintoli Lane	Opened 1972
	​	R1.80	2	SR 200 west (North Bank Road)	Opened 1972
	​	​	3A	Glendale Drive	Eastbound exit only; opened 1972; connects to Essex Gulch Road
	Essex	R2.92	3B	Essex Lane	Opened 1972
	​	R4.04	4	Glendale Drive – Business District	Opened 1972
	​	R5.45	5	Glendale Drive – Blue Lake	Opened 1988; former SR 299; connects to Blue Lake Boulevard
	​		East end of freeway
	Willow Creek	38.83		SR 96 east – Hoopa
South Fork Trinity River		43.04 0.00		Hlel-Din Memorial Bridge
Trinity TRI 0.00-72.25	​	3.60		Mathews Rest Area
	Weaverville	51.57		SR 3 north – Trinity Center, Yreka, Trinity Lake	West end of SR 3 overlap
	​	56.80		Moon Lim Lee Rest Area
	Douglas City	R58.11		SR 3 south – Hayfork	East end of SR 3 overlap
Trinity–Shasta county line	​	72.25 0.00		Buckhorn Summit
Shasta SHA 0.00-99.36	Redding	22.23		Buenaventura Boulevard to SR 273 south – Anderson	Access to Mercy Medical Center Redding
		24.09 16.83[N 1]		SR 273 south / SR 44 east (Market Street north / Historic US 99) to I-5 south	West end of SR 273/Hist. US 99 overlap; former SR 299 east
				Eureka Way ( SR 44 / SR 273 / Historic US 99)	One-way street, inbound access only where SR 44 west/SR 273 north traffic enters in
		18.62[N 1] 24.09		SR 273 north (Market Street north / Historic US 99) to I-5 north – Portland	East end of SR 273/Hist. US 99 overlap
				Lake Boulevard west (CR A18)
		24.82		I-5 – Portland, Sacramento	Interchange; I-5 exit 680
			West end of freeway
		25.54	141	Churn Creek Road / Hawley Road	Opened 1974
	​	27.22	143	Old Oregon Trail	Opened 1974; serves Shasta College
	​		East end of freeway
	​	60.60	Hillcrest Rest Area
	​	80.09		SR 89 – Burney Falls Park, Lassen Park
Lassen LAS 0.00-25.64	No major junctions
Modoc MOD 0.00-66.63	Adin	0.33		SR 139 south – Susanville	West end of SR 139 overlap
	Canby	21.75		SR 139 north – Tulelake, Klamath Falls	East end of SR 139 overlap
	Alturas	40.63 22.76[N 2]		US 395 south (Main Street) – Susanville, Reno	West end of US 395 overlap
	​	27.10[N 2]	Agricultural Inspection Station (westbound only)
	​	28.29[N 2] 40.64		US 395 north – Lakeview	East end of US 395 overlap
	​	66.63		Former SR 8A	Continuation into Nevada; road no longer maintained
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

• California Roads portal

Wikimedia Commons has media related to California State Route 299.

• Caltrans: State Route 299 highway conditions
• Caltrans Traffic Conditions Map
• California Highway Patrol Traffic Incidents
• Historic endpoints of U.S. Highway 299
• California @ AARoads.com - State Route 299
• California Highways: SR 299