The state highway system of the U.S. state of Oregon is a network of highways that are owned and maintained by the Highway Division of the Oregon Department of Transportation (ODOT).
22-674: The Nehalem Highway No. 102 (see Oregon highways and routes ) is a state highway in the U.S. state of Oregon that passes through the Nehalem River valley. It runs from U.S. Route 101 (US 101) in Astoria southeast to Oregon Route 8 (OR 8) in Forest Grove . Between Astoria and the Mist–Clatskanie Highway No. 110 in Mist , it is signed as Oregon Route 202 while the rest
44-409: A one-way pair . Westbound traffic runs as Baseline Street and eastbound traffic runs on Oak Street. In downtown Hillsboro it receives the northern terminus of Oregon Route 219 , which is 1st Avenue. After passing through downtown Hillsboro, OR 8 moves westward through the adjoined towns of Cornelius and Forest Grove , passing next to Pacific University . At Cornelius the road is again split into
66-728: A main road within its boundaries. Two separate numbering systems are used: routes (e.g. Interstate 84 , U.S. Route 26 , and Oregon Route 140 ) are those used by the general public, and their shields are posted on guide signs and maps. These comprise the Interstate Highways , U.S. Highways , and Oregon state routes (e.g. OR 201 ). Highways , on the other hand, are used internally by ODOT; they are named and numbered (e.g. Pacific Highway No. 1 , Willamette Highway No. 18 ). The two systems, while largely overlapping, are not congruent. Many routes are signed on streets which are maintained by counties and cities, and thus are not part of
88-468: A one-way pair, with westbound traffic running on Adair Street, and eastbound on Baseline. In Forest Grove, it intersects with Oregon Route 47 , where it becomes part of the Nehalem Highway No. 102. TV Highway continues as OR 47 south to McMinnville. In downtown Forest Grove the road splits again, with eastbound traffic running on 19th Street, and westbound on Pacific Avenue. West of Forest Grove, OR 8
110-435: Is known as Gales Creek Road , which is not actually a state highway; after passing through some farmland west of Forest Grove, including the community of Gales Creek , OR 8 reaches its western terminus in an intersection with Oregon Route 6 south of the community of Glenwood . The section between Beaverton and Hillsboro was built around 1918. Constructed of cement, it partly replaced a county road built of dirt that ran on
132-556: Is overlaid on the Mist–Clatskanie Highway No. 110 , Nehalem Highway No. 102 , and Tualatin Valley Highway No. 29 . Likewise, highways may consist of several routes; Tualatin Valley Highway No. 29 comprises parts of OR 8 and OR 47 . Every highway is fully state-maintained, and every route is at least partially state-maintained. The OTC designates the paths of these routes as they follow state highways and local roads; any U.S. Route or Interstate numbers must also be approved by
154-672: Is signed as OR 47 . A piece of the highway in Astoria, north of the Warrenton–Astoria Highway No. 105 , is also US 101 Business . The western terminus of the Nehalem Highway No. 102 is a roundabout with US 101 in Astoria. Here, US 101 Business and OR 202 travel along the eastern shore of Youngs Bay , where US 101 Business splits away to the south, and the Youngs River . Soon after, it enters
176-573: The American Association of State Highway and Transportation Officials (AASHTO). Route signs are maintained by the same agency as the roads they are posted along. If a local government maintains a numbered route, it signs an agreement with the state to keep the signs posted, thus keeping a continuous route for the benefit of travelers. The initial primary state highway system was designated in 1917, initially consisting of 36 named and numbered highways, including some designated earlier that year by
198-701: The Oregon State Legislature and others added to the network by the Oregon State Highway Commission , the predecessor to the OTC. The first signed routes were the U.S. Routes , in 1926. It was not until 1932 that Oregon Routes were numbered by the OTC and marked by the Oregon State Highway Department ; every primary state highway that was not already part of a U.S. Route received a route number at that time. Starting in late 1931,
220-661: The Nehalem River all the way to Timber , crossing the divide of the Northern Oregon Coast Range there and then going down Gales Creek to Forest Grove, instead of going down Dairy Creek as it has since about 1940. Oregon highways and routes The state highway system consists of about 8,000 miles (13,000 km) of state highways , that is, roadways owned and maintained by ODOT. When minor connections and frontage roads are removed, that number drops to approximately 7,400 miles (11,900 km) or around 9% of
242-698: The Sunset Highway runs. The official designation, beginning from the eastern terminus, is the Tualatin Valley Highway No. 29 (see Oregon highways and routes ). Continuing west, OR 8 enters the suburb of Beaverton , and after its interchange with Oregon Route 217 , a freeway, its posted name changes to the Tualatin Valley (TV) Highway at Hocken Avenue. It comes within one block of Oregon Route 10 , running parallel but never intersecting, although commuters often use surface streets to change between
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#1733085348803264-582: The cancellation resulted from freeway revolts . Oregon Route 8 Oregon Route 8 , also known as Oregon Highway 8, is an Oregon state highway which serves the western suburbs of Portland . The road is locally known as Canyon Road and Tualatin Valley Highway , and travels through the center of the Tualatin Valley . Oregon 8 is located entirely within Washington County . The portion of
286-536: The highway meets US 26 , which carries the Sunset Highway No. 47. The two highways run concurrently for about four miles (6.4 km). The Nehalem Highway and OR 47 split away from US 26 and the Sunset Highway and travels through the town of Banks . It ends at an intersection with OR 8 , the Tualatin Valley Highway No. 29. In the early part of the 20th century, it followed
308-577: The highways. TV Highway continues west as an expressway out of Beaverton, through the communities of unincorporated urban Washington County, including Aloha , where it runs right next to chipmaker Intel's facilities. The highway continues into the Hillsboro neighborhoods of Reedville and Witch Hazel , where it intersects with Cornelius Pass Road at Reedville. It then continues into the city proper of Hillsboro , running north–south as 10th Avenue before turning east–west with traffic split into
330-622: The previously unsigned secondary highways. Typically, these new route numbers were identical to the old highway numbers, and range from OR 103 to OR 454 . In cases where the highway number was already in use by a different route, the first digit of the new route number was changed to 5 (e.g. Cape Arago Hwy No. 240, designated OR 540 in 2003). Most of these new route numbers are unsigned as of 2015. Two state highways lack route numbers: Century Drive Hwy No. 372 and Midland Hwy No. 420. The following highways were constructed and/or planned, and then subsequently demolished or cancelled. In some cases,
352-631: The route from US 26 to Oregon Route 47 is part of the National Highway System , listed as a principal arterial. The eastern terminus of OR 8 is an interchange with U.S. Route 26 (which is, at that point, the Sunset Highway ) just west of the Portland city limits and the Washington - Multnomah county line. Initially, it is also known as Canyon Road , since it comes out of the gulch in which
374-1038: The south. Despite this pattern, the internally used highway numbers for primary highways remained ad-hoc. A few route numbers were added after the 1930s, and broke these patterns for continuity reasons: OR 99 , OR 126 , OR 138 , and OR 140 . Secondary route numbers, three digits starting with 2, were laid out to generally increase bearing west. They ranged from OR 201 in Malheur County to OR 240 in Yamhill County . The internally used highway numbers for secondary highways were also three digit numbers, but were designated by county, from No. 10X in Clatsop County , No. 11X in Columbia County , No. 12X in Multnomah County , etc., until No. 45X in Malheur County . In 2002 and 2003, ODOT decided to assign route numbers to most of
396-574: The southern side of the railroad tracks. The earlier road came from Portland via Bertha Blvd. on Farmington Road and veered north on what is now Kinnaman Road until 209th Avenue in Reedville, where it then ran parallel to the rail tracks. At Witch Hazel it then followed the modern Witch Hazel and River roads into Hillsboro proper. In March 1919, Hillsboro elected to have the highway moved from Main Street two blocks south to Baseline Street (eastbound traffic
418-490: The state highway system at all, e.g. OR 8 , whose eastern- and westernmost portions, Canyon Road and Gales Creek Road, are not actually state highways. On the other hand, some state highways are not signed as routes at all; the Beaverton–Tualatin Highway No. 141 has an official route designation ( OR 141 ), but remains entirely unsigned. Signed routes may comprise several highways; for instance, OR 47
440-1062: The state took over maintenance of many county "market roads", which became secondary state highways with three-digit numbers; some of these were assigned route numbers in 1935, but many others remained unsigned. The primary, two-digit route numbers were laid out in a grid system, similar to the Interstate Highway System . Odd-numbered routes were north-south and increased in number bearing west, ranging from OR 3 in Wallowa County to OR 53 in Clatsop and Tillamook counties. Even-numbered routes were east-west and increased in number bearing south, ranging from OR 6 in Tillamook and Washington counties to OR 70 in Klamath County . East-west highways in eastern Oregon were given route numbers between OR 74 and OR 86 , again increasing in number to
462-516: The total road mileage in the state. Oregon's portion of the Interstate Highway System totals 729.57 miles (1,174.13 km). Transfers of highways between the state and county or local maintenance require the approval of the Oregon Transportation Commission (OTC), a five-member governor-appointed authority that meets monthly. These transfers often result in discontinuous highways, where a local government maintains part or all of
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#1733085348803484-535: The valley of the Nehalem River , and continues southeast towards the community of Jewell . Leaving Jewell, it then continues east-northeast to the town of Mist , where OR 202 ends. The Nehalem Highway continues southeast from there, as OR 47 . Though in the mountainous Northern Oregon Coast Range, the Nehalem Highway itself is a winding road, as it follows the banks of the Nehalem River from Jewell while passing through Vernonia and Pittsburg. Near Buxton ,
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