Interstate Bridge work underway

Check out the “zippersaurus”

Sheaves and trunnion on a barge, steering toward the Interstate Bridge
Custom sheaves and trunnions on a barge, steering toward the Interstate Bridge.

Although wildfires delayed the start of the project, the team working to repair the 100+ year old Interstate Bridge on Interstate 5 between Oregon and Washington is making good progress in getting the work complete.

The northbound span of the Interstate Bridge closed for nine days in September 2020 as crews replaced a cracked trunnion and other parts that help lift and lower the bridge.

Travelers are sharing the traffic lanes with a zipper truck while the work continues.  Movable concrete barriers allow two lanes of traffic in the busiest direction, with two southbound lanes open for the morning commute into Portland, and then switching to two northbound lanes for the afternoon commute back across the river into Vancouver.

This switch happens surprisingly fast.

Take a look at the zipper truck in action. Or, as some of our team likes to call it, the “zippersaurus.”