Crews dig deep hole in Waterfront Park to put new Burnside Bridge design to the test
Crews are finishing up digging a 125-foot hole to install a test foundation that they’ll use to test the earthquake-resistant ...
Seismic testing being done for new Burnside Bridge project in Tom McCall Waterfront Park
The new bridge will be earthquake-ready, so crews are digging a 10-foot-wide, 125-foot-deep hole to see how concrete supports ...