Metaline Falls-Nelway Border Crossing, Border checkpoint on Highway 31 between Washington State and British Columbia.

The Metaline Falls-Nelway crossing connects Washington State Route 31 to British Columbia Highway 6 through rugged mountainous terrain at the United States-Canada border. Inspection facilities on each side process vehicles and travelers crossing between the two countries.

This crossing opened in 1921 when the Pend Oreille Highway was completed, linking the region to important transportation networks. The United States inspection building was added to the National Register of Historic Places in 1997, recognizing its role in facilitating cross-border travel.

The name Nelway, first recorded in 1926, is popularly explained as a contraction of "Nelson and Spokane highway", though it may instead refer to the Nelson and Fort Sheppard Railway that ran nearby. The crossing is a regular stop for tourists driving the International Selkirk Loop.

Access is via Washington State Route 31 on the U.S. side and British Columbia Highway 6 on the Canadian side; this is the easternmost crossing in Washington. The U.S. station closes at 4 p.m., a cut from midnight announced in 2018 and made permanent after the pandemic, so plan crossings earlier in the day. The Canadian port operates separately, so check both sets of hours before setting out.

The name Nelway is popularly explained as a contraction of "Nelson and Spokane highway", though it may instead refer to the Nelson and Fort Sheppard Railway that ran nearby. The name itself did not appear until 1926, five years after the Pend Oreille Highway was completed and three years after the BC side officially opened.