Interstate 182

Interstate 182
Map of the Tri-Cities in Washington with I-182 highlighted in red
Route information
Auxiliary route of I-82
Maintained by WSDOT
Length	15.19 mi[1][2] (24.45 km)
Existed	June 23, 1969–present
History	Completed in 1986
Tourist routes	Lewis and Clark Trail
NHS	Entire route
Major junctions
West end	I-82 / US 12 near Richland
Major intersections	SR 240 in Richland US 395 in Pasco US 395 / SR 397 in Pasco
East end	US 12 in Pasco
Location
Country	United States
State	Washington
Counties	Benton, Franklin
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future State highways in Washington Interstate US State Scenic Pre-1964 1964 renumbering Former
← SR 181 → SR 193

Interstate 182 (I-182) is an east–west auxiliary Interstate Highway in the U.S. state of Washington. It connects I-82 to the Tri-Cities region and crosses the Columbia River on the Interstate 182 Bridge between Richland and Pasco. I-182 is 15 miles (24 km) long and entirely concurrent with U.S. Route 12 (US 12). It also intersects Washington State Route 240 (SR 240) and US 395.

Business leaders in the Tri-Cities began lobbying for a freeway in 1958 after early alignments for I-82 were routed away from the area. I-182 was created by the federal government in 1969 as a compromise that would directly connect to the Tri-Cities area while allowing other traffic to bypass it. The project would also incorporate an existing proposal to build a bridge between Richland and Pasco at the site of a cable ferry that ran until 1931.

Construction on I-182 was to begin in 1971, but was delayed by opposition from conservation groups, disputes over interchange locations, and a federal freeze on highway funding in 1980. The first section to be built, over the Yakima River west of Richland, began construction in late 1980 and opened to traffic three years later. The Interstate 182 Bridge opened in November 1984 and linked to a longer section opened a month earlier in Pasco connecting to the existing US 12 bypass. The final sections of the freeway, between I-82 and Richland, opened to traffic in March 1986.