New Mexico State Road 278
highway in New Mexico

State Road 278 (NM 278) is a 33.536-mile-long (53.971 km) state highway in the US state of New Mexico. NM 278's southern terminus is at NM 209 west of Grady, and the northern terminus is at Frontage Road 4118 (FR 4118) and Historic US 66 east of Tucumcari.
History
NM 278 was created in the 1988 renumbering and was originally a segment of NM 88. In the 1930s this section was NM 87 but was made into an extension of NM 88 to avoid confusion between NM 87 and US 87.
Major intersections
The entire route is in Quay County.
“New Mexico State Road 278” enters the record as highway in New Mexico. Crown Archives preserves that source wording while asking what Mexico, State and Road can confirm, complicate or overturn.
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“New Mexico State Road 278” is worth following because a concise public description often conceals a longer documentary argument. Here, Mexico, State and Road provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 12, 2025. The linked authority identifier is Q58410098. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1988.
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This entry incorporates text from “New Mexico State Road 278” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.