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The Oregon state government initially proposed numbering the auxiliary Interstates using lettered suffixes, but were denied in 1958 by the American Association of State Highway Officials (forerunner to the AASHTO). [7] The last section of the Interstate Highway system to be built in Oregon, on I-82 near Hermiston, opened on September 20, 1988. [8]
1940s-style sign for Oregon Route 50, incorporating the Seal of Oregon. 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.
State roads in New Mexico, along with the Interstate Highway System, and the United States Numbered Highway System, fall under the jurisdiction of the New Mexico Department of Transportation (NMDOT). The U.S. state of New Mexico has 412 state roads , totaling 7,405.762 miles (11,918.419 km) that criss-cross the 33 counties of the state.
Interstate 5 is the second-longest freeway in Oregon, at 308 miles (496 km), and is the only Interstate to traverse the state from north to south. [4] The highway connects several of the state's largest metropolitan areas, which lie in the Rogue and Willamette valleys, [5] and passes through counties with approximately 81 percent of Oregon's population. [6]
Longest interstate in New Mexico. Replaced and runs along unsigned US 85 in its entire length in the state. Also part of the CanAm Highway: I-27 — — Texas state line: I-25 near Raton: proposed [2] — Proposed as part of the Ports to Plains Corridor: I-40: 373.51: 601.11 I-40 at the Arizona state line: I-40 at the Texas state line 1957: current
In the U.S. state of Oregon, there are two systems for categorizing roads in the state highway system: named state highways and numbered state routes.Named highways, such as the Pacific Highway No. 1 or the North Umpqua Highway East No. 138, are primarily used internally by the Oregon Department of Transportation (ODOT) whereas numbered routes, such as Interstate 5 (I-5), U.S. Highway 20 (US ...
State Road 50 (NM 50) is a state highway in the US state of New Mexico. Its total length is approximately 6 miles (9.7 km). NM 50's western terminus is in the village of Glorieta at Interstate 25 (I-25), U.S. Route 84 (US 84) and US 85 and the eastern terminus is in the village of Pecos at NM 63 and NM 223.
State Road 173 (NM 173) is a 18.090-mile-long (29.113 km) state highway in the US state of New Mexico. Its western terminus is at U.S. Route 550 (US 550) in Aztec, and its eastern terminus at the end of state maintenance at the NM 511 west of Navajo Dam.