"The Bridges of Portland There are 11 bridges crossing the Willamette River in the Portland area with a total of 54 lanes. These bridges are: • St. Johns Bridge (4 lanes) • Fremont Bridge (8 lanes) • Broadway Bridge (4 lanes) • Steel Bridge (3 lanes with a fourth used by light rail) • Burnside Bridge (5 lanes) • Morrison Bridge (6 lanes) • Hawthorne Bridge (4 lanes) • Marquam Bridge (8 lanes) • Ross Island Bridge (4 lanes) • Sellwood Bridge (2 lanes) • George Abernethy Bridge (6 lanes) There are two other bridges that also serve the Portland area. These bridges span the Columbia River and connect Oregon State to Washington State; more specifically, they connect the Vancouver, Washington area with the Portland area. These two bridges are: • Glenn L. Jackson Memorial Bridge (8 lanes) • Interstate Bridge (6 lanes). An important item to note here is the fact that the Interstate Bridge is now considered obsolete. The Oregon Department of Transportation and the Washington State Department of Transportation are currently working to replace the Interstate Bridge with a new bridge that will have five or six lanes in each direction – doubling its current capacity. An obvious comparison can be made with the project to twin the Port Mann Bridge. The Oregon-Washington bridge replacement project is called the Columbia River Crossing Project and more information can be found on the project’s website at www.columbiarivercrossing.org. The new Columbia River Crossing is being planned to address the congestion, mobility and safety problems on the Interstate Bridge and along the I-5 corridor between Vancouver, Washington and downtown Portland. It will include a lane for bus or light rail rapid transit."
http://www.getmovingbc.com/press_release/Bridges%20in%20Metro%20Portland%20vs%20Lower%20Mainland%20Report%20-%20Get%20Moving%20BC%20-%20FINAL%20-%20.pdf
