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Lewis-Clark Valley
- Pullman-Moscow Regional Airport
3200 Airport Complex North
Pullman, WA 99163
Phone: (509) 338-3223 | Website - Port of Wilma
302 N. Mill St.
Colfax, WA 99111
Phone: (509) 509-3791 | Website - Port of Clarkston
849 Port Way
Clarkston, WA 99403
Phone: (509) 758-5272 | Website - Lewiston-Nez Perce
County Regional Airport
406 Burrell Ave
Lewiston, ID 83501
Phone: (208) 746-7962 | Website - Port of Lewiston
1626 6th Ave N.
Lewiston, ID 83501
Phone: (208) 746-5531 | Website
Located 465 miles from the Pacific Ocean, Lewiston and Clarkston are the most inland port on the west coast. The Columbia-Snake River System is supported by an inland barge service that transports bulk commodities and containerized cargo. The Ports provide the largest cranes, warehouse facilities and grain storage facilities on the inland river system. Download Brochure
Modes of Transportation
![]() RailA feeder line of the Great Northwest Railroad provides the Lewis-Clark Valley with a direct link to the main lines of the Union Pacific and Burlington Northern Railroads. |
![]() AirAir transportation is available at the Lewiston-Nez Perce County Regional Airport. The airport is served by two commercial operators, Alaska, and Delta. It is also home to a new 80 acre Industrial Airpark with direct taxiway acccess. |
![]() RiverThe Columbia/Snake River System provides barge service to the Port of Portland and west coast ports with connections to steamship lines serving the Pacific Rim. |
![]() Intermodal Transportation RoadLewiston and Clarkston are located next to the intersection of US Highway 12 and 95. Highway 12 provides a direct link to markets in Montana, while Highway 95 allows for links in Boise, Idaho to South and Canadian Markets to the North. |
Transportation Volume Comparison

With the Lewis-Clark Valley 365 miles inland, all major modes of transportation are available to Port shippers to route their products globally and still remain competitive in the marketplace.
Container barge service began on the Columbia River in 1975 with an average of 50 containers per month barged into the Port of Portland. In 1978 the Port of Lewiston began shipping containers on barge, moving a total of 507 TEUs for the year.
Today there is consistent service provided by tug and barge lines allowing shipments of containerized cargo to meet vessel schedules calling the Port of Portland.
Port Contact Information
The Port of Lewiston
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The Port of Clarkston
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Port of Wilma
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