U.S. Route 85

U.S. Route 85
State	US
Route	85
Type	US
Length mi	1400
Established	1926
Terminus a	El Paso
Terminus b	Big Bend National Park

U.S. Route 85 U.S. Route 85 is a north–south United States Numbered Highway that traverses the El Paso region northward through the Rio Grande Valley, Las Cruces, the Albuquerque metropolitan area, Santa Fe, Denver, the Cheyenne corridor, and into Black Hills environs near Deadwood before reaching its northern termini. It connects major urban centers such as El Paso, Albuquerque, Denver, and Cheyenne while intersecting historic corridors like U.S. Route 66 and modern interstates including I-25, Interstate 70, and Interstate 80.

Route description

From its southern origin in the El Paso metropolitan area, the highway proceeds through the Tigua ancestral lands and adjacent to Fort Bliss, then advances into Doña Ana County near Las Cruces and White Sands Missile Range. In New Mexico, the corridor passes through the Rio Grande valley, skirts the Organ Mountains and intersects historic sites associated with Spanish colonization and Santa Fe Trail. Northward, the route shares alignments with segments of Interstate 25, threading through the Albuquerque area and adjacent to institutions such as University of New Mexico, continuing past the Pecos National Historical Park toward Santa Fe and the Sangre de Cristo Mountains.

Entering Colorado, U.S. Route 85 navigates the Front Range Urban Corridor, enters the Denver region where it intersects the South Platte River and connects with corridors serving Denver International Airport, Arapahoe County, and Adams County. The highway then continues north across the Pawnee National Grassland toward Greeley and Fort Collins, joining interstate segments and paralleling rail lines historically operated by the Union Pacific Railroad and the Chicago, Burlington and Quincy Railroad. In Wyoming, the route serves Cheyenne and traverses high plains toward Newcastle, before entering South Dakota near the Black Hills and providing access to tourism centers such as Deadwood and outdoor recreation areas within proximity to Black Hills National Forest.

History

Designated in the initial 1926 U.S. Highway system during conferences involving the American Association of State Highway Officials and federal agencies, the corridor followed earlier wagon trails, Santa Fe Trail segments, and U.S. Route 87-adjacent alignments that had been used during Spanish and Mexican–American War periods. Early improvements were funded and influenced by legislative efforts like the Federal Aid Road Act of 1916 and later by New Deal-era programs administered in partnership with state highway departments and the Civilian Conservation Corps. Mid-20th century expansions paralleled the construction of the Interstate Highway System championed under Dwight D. Eisenhower and integrated with projects involving the Bureau of Public Roads; sections were realigned or multiplexed with Interstate 25 and Interstate 80 as urban freeways developed in Denver and Albuquerque.

The route has experienced recurring themes of realignment, urban bypass construction, and surface-to-freeway conversions influenced by regional growth in El Paso, Albuquerque, Denver, and Cheyenne, and by resource-driven booms tied to petroleum and mineral extraction in the Permian Basin and Rocky Mountains. Grassroots preservation groups and municipal planning commissions in locales such as Deadwood and Santa Fe have campaigned to protect historic alignments and streetscapes associated with early 20th-century highway travel.

Major intersections

Major intersections include junctions with U.S. Route 62 near El Paso, concurrency segments with I-10 and I-25 through Albuquerque and Santa Fe, an interchange with I-70 and I-76 in the Denver metropolitan area, a crossing of I-80 near Cheyenne, and links to U.S. Route 16 and state highways serving Deadwood and regional parks. The corridor interfaces with freight and passenger rail yards historically associated with Union Pacific Railroad, BNSF Railway, and regional transit systems including RTD.

Related routes

Spur and business alignments have been designated to serve downtowns and historic districts: business loops through Las Cruces and Greeley preserve main street access, while state-maintained connectors in New Mexico and the Colorado Department of Transportation link to rural communities and archaeological sites such as Pecos National Historical Park and Taos Pueblo. Alternate routings historically paralleled by U.S. Route 85 Alternate and other numbered variants served as arterial feeders to industrial corridors near Fort Bliss and energy fields in the San Juan Basin.

Future developments

Planned improvements involve capacity upgrades coordinated by state departments including the New Mexico Department of Transportation, the Colorado Department of Transportation, and the Wyoming Department of Transportation, with funding proposals considered by the Federal Highway Administration and regional metropolitan planning organizations like the Denver Regional Council of Governments. Projects target corridor safety, pavement rehabilitation, intermodal freight connections with Union Pacific Railroad facilities, and urban interchange reconstructions to support growth in El Paso, Albuquerque, and Denver. Environmental reviews reference protected areas such as Pecos National Historical Park and the Black Hills National Forest, and stakeholder consultations include tribal governments like the Pueblo of Santa Ana and the Jicarilla Apache Nation.

Category:United States Numbered Highways