Abernethy Bridge

Improvements will strengthen the Abernethy Bridge to withstand a major earthquake and accommodate a future third travel lane. Once complete, the bridge will be the first earthquake-ready highway structure across the Willamette River in the Portland metropolitan region.

Isometric view of bridge completion

Construction process

Isometric view of bridge demonstrating southbound construction process

Construct new bridge foundations, widen each side. Slide one direction. Existing lanes will remain open to traffic during this time.

1

Isometric view of bridge demonstrating northbound construction process

Slide the other direction. Existing lanes will remain open to traffic during this time.

2

Isometric view demonstrating bridge widening construction process

Complete remaining bridge widening toward the center to join the bridges together and remove existing supports. Existing travel lanes will remain open to traffic.

3

Isometric view of north and southbound bridge completion

Striping for the final lane configuration will be completed in the future.

4

Animation of Abernethy Bridge construction process