U.S. Route 97

U.S. Route 97
Country	USA
Type	US
Route	97
Length mi	670
Established	1926
Direction a	South
Terminus a	California near Weed
Direction b	North
Terminus b	British Columbia at Laurier–Cascade
States	California, Oregon, Washington

U.S. Route 97

U.S. Route 97 is a north–south United States Numbered Highway traversing the Pacific Coast Ranges and the Columbia River Plateau between California, Oregon, and Washington. The corridor links communities such as Weed, Klamath Falls, Bend, The Dalles, Yakima, and Laurier–Cascade while connecting with transcontinental routes like Interstate 5, Interstate 84, and Interstate 90. The route serves as a regional freight artery, tourist byway, and an element of historical corridors associated with timber, railroads, and early Bonneville Dam era infrastructure.

Route description

The southern terminus begins near Weed and climbs through the Klamath Mountains before descending into the Klamath Basin and passing through Klamath Falls. Northward the highway crosses the Deschutes River valley and approaches Bend, where it intersects US 20 and US 20 Business alignments near Deschutes County. Continuing, the route proceeds along the eastern rim of the Cascade Range and connects to Redmond and Prineville with spurs and state highway links to Ochoco National Forest. Approaching The Dalles, the highway joins the Columbia River corridor, intersecting Interstate 84 near the Bonneville Dam axis and passing river communities served historically by Union Pacific Railroad and BNSF Railway lines.

Crossing into Washington, the route follows canyon and plateau alignments adjacent to the Columbia River Gorge National Scenic Area before turning inland toward Yakima and Ellensburg, connecting with Interstate 90 and serving as a primary route toward the Okanogan Highlands and the Canadian Rockies approach. Near its northern terminus, the highway traverses the Colville National Forest and links with state and county routes feeding Oroville and border facilities at Laurier adjacent to British Columbia crossings that interface with major Canadian corridors.

History

The corridor traces indigenous travel routes used by Klamath Tribes and Warm Springs peoples prior to contact. Euro-American development accelerated during the Oregon Trail era and later with late 19th-century railroad expansion by companies such as Southern Pacific Railroad and Northern Pacific Railway, shaping alignments paralleling rail grades. Federal designation in the 1926 U.S. Highway System placed the route into a nationwide grid alongside contemporaneous corridors like U.S. Route 66 and U.S. Route 101. Mid-20th-century improvements were influenced by New Deal-era projects including works by the Civilian Conservation Corps and hydropower developments tied to the Bonneville Power Administration.

Postwar decades saw progressive paving, realignments, and bypasses near urbanizing centers such as Bend and Yakima in response to increasing automobile, tourism, and timber-industry freight demands. Environmental regulation changes after the National Environmental Policy Act and controversies involving Endangered Species Act compliance affected project sequencing near salmon-bearing tributaries of the Columbia River. Recent preservation efforts have highlighted historic segments associated with early automobile tourism and roadside architecture from the Good Roads Movement era.

Major intersections

The route intersects numerous major corridors and facilities that shape cross-state mobility and freight movement: - Southern terminus: junction with Interstate 5 near Weed and access to SR 89. - Junction with US 97 Business in Klamath Falls and connection to OR 39. - Interchange with US 20 and US 97 Business in Bend; connection to OR 126 corridors. - Confluence with Interstate 84 at The Dalles and links to US 30. - Crossing with SR 14 and access to Columbia River Gorge National Scenic Area amenities. - Major junctions with Interstate 82 and US 12 near Yakima and Ellensburg where ties to Interstate 90 enable transcontinental routing. - Northern terminus: border facilities at Laurier–Cascade connecting to BC 3 and Canadian transportation networks.

Special routes

Several business loops and alternate designations provide local access and historic alignments. Notable examples include the business route through Klamath Falls preserving commercial corridors and a temporary truck route established near The Dalles to accommodate oversized freight linked to Port of The Dalles activity. Historical alignments parallel rail corridors originally constructed by Southern Pacific Railroad and later repurposed for Amtrak and freight operations, with spur connections to state-maintained scenic byways and recreational access roads serving Mount Rainier National Park-oriented tourism nodes.

Traffic and safety

Traffic volumes vary widely: urbanized segments near Bend and Yakima experience commuter and seasonal tourist peaks tied to events at venues like Oregon State Fairgrounds and regional ski areas such as Mount Bachelor, while rural stretches through the Colville National Forest and Klamath Basin register lower but critical freight volumes for timber and agricultural commodities bound for terminals served by Port of Portland and Northwest Seaport Alliance partners. Safety concerns include winter weather closures at high-elevation passes, collision hotspots near highway-rail grade crossings, and large-truck crash rates on two-lane sections, prompting coordination among Federal Highway Administration, Oregon Department of Transportation, and Washington State Department of Transportation for mitigation measures.

Future developments and upgrades

Planned and proposed projects focus on capacity improvements, safety upgrades, and climate resiliency. Corridor modernization initiatives include truck-climbing lanes and interchange reconstructions interfacing with Interstate 84 and Interstate 90, pavement rehabilitation funded through federal infrastructure programs, and ecosystem-sensitive bridge replacements to improve fish passage in tributaries to the Columbia River. Ongoing studies evaluate rural electrification corridors for heavy-duty electric truck charging in partnership with agencies like the Bonneville Power Administration and pilot freight-efficiency programs coordinated with regional ports. Community-driven proposals emphasize multimodal integration with Amtrak services, enhanced tourism signage linked to National Scenic Byways Program corridors, and preservation of historic roadside resources from the early automobile era.

Category:U.S. Highways in Washington (state) Category:U.S. Highways in Oregon Category:U.S. Highways in California