project office to conduct pre-design and planning work, which was followed by a matching contribution from the Oregon Transportation Commission in August. A new timeline for the project, with the start of environmental review in 2020 and construction by 2025, was approved by the joint committee in late 2019. The replacement bridge's design is unspecified, with discussions about the inclusion of light rail, lane configurations, and investigating a third crossing all under consideration. Former Michigan Department of Transportation deputy director Greg Johnson was appointed as the bridge program administrator in June 2020. Several alternative ideas have been proposed, including an immersed tube tunnel, a third bridge, and a bascule bridge favored by the U.S. Coast Guard, but have been rejected for their drawbacks and cost. , the project is estimated to cost $5.5 billion to $7.5 billion. The locally preferred alternative selected in 2022 is an eight-lane bridge with a light rail guideway on the west side and several modified interchanges. See also List of bridges documented by the Historic American Engineering Record in Washington (state) List of bridges on the National Register of Historic Places in Oregon References External links WSDOT:Interstate Bridge Columbia River Crossing: Home page of ODOT/WSDOT project to replace the Interstate Bridge Bridges completed in 1917 Bridges completed in 1958 Bridges in Portland, Oregon Bridges in Vancouver, Washington Bridges over the Columbia River Historic American Engineering Record in Washington (state) Vertical lift bridges in the United States Vertical lift bridges in Oregon Movable bridges on the Interstate Highway System Interstate 5 Road bridges on the National Register of Historic Places in Oregon Road bridges on the National Register of Historic Places in Washington (state) U.S. Route 99 Towers in Washington (state) National Register of Historic Places in Portland, Oregon 1917 establishments in Oregon 1917 establishments in Washington (state) Drawbridges on the National Register of Historic Places Hayden Island, Portland, Oregon North Portland, Oregon Former toll bridges in Oregon Former toll bridges in Washington (state) National Register of Historic Places in Clark County, Washington Steel bridges in the United States Parker truss bridges in the United States Interstate vehicle bridges in the United States