A third lane will be added in each direction on I-205 between Stafford Road and OR 99E as well as a northbound entrance-to-exit lane, also referred to as an auxiliary lane, between OR 99E and OR 213.
Widening I-205 requires removing part of the rock slope on the northbound side of I-205 between the Sunset Avenue overcrossing and the OR 43 interchange.
The following interchange and ramp changes will improve safety and travel-time predictability on I-205:
Other elements will improve safety and connectivity for people who walk, bike and roll in the interchange areas:
Upgrades to the Abernethy Bridge, as well as the Main Street, 10th Street and Blankenship Road bridges will help them withstand a major earthquake. Once complete, the Abernethy Bridge will be the first earthquake-ready interstate structure across the Willamette River, making I-205 the regional north-south lifeline route after a disaster.
Main Street will include a new 6-foot sidewalk on both sides of the street under the bridge.
Adding a third lane in each direction on I-205 requires rebuilding the West A Street and Sunset Avenue bridges that cross over I-205. These bridges, along with the Tualatin River, Borland Road and Woodbine Road bridges, will be rebuilt to withstand a major earthquake.
The following new replacement bridges will be wider than the current bridges, allowing more room for people walking, biking and rolling:
The new West A Street bridge includes a 6-foot shoulder/bike lane, a 7-foot curb and a sidewalk in each direction with an 8-foot parking area on one side.
The new Sunset Avenue bridge includes a 6-foot shoulder and an 8-foot sidewalk in each direction.
Five traveler information signs were installed in 2020 to help travelers get where they’re going more safely and efficiently. These signs display traffic flow information, roadway conditions and advisory speed limits. Two additional traveler information signs are planned.
Sound walls are planned at two locations near Blankenship Road and one location near the southbound lanes of I-205 at exit 9, as determined by a vote among eligible residents and property owners.