February 06, 2026
Bob Ortblad argues that an immersed tunnel using sandwich steel-concrete tubes would be a more cost-effective alter ...
Bob Ortblad argues that an immersed tunnel similar to a project underway in British Columbia could significantly re ...
Bob Ortblad critiques the Interstate Bridge Replacement Program’s latest shared use path ramp design and questions ...
Bob Ortblad argues the IBR is overstating timber pile risks and misusing ground improvement testing on Hayden Islan ...
Bob Ortblad urges the Interstate Bridge Replacement Program to consider an immersed tunnel alternative, arguing it ...
Bob Ortblad critiques the IBR program for hiding a crucial geotechnical report. ...
Retired Engineer Bob Ortblad believes a new study of an immersed tunnel by a consultant independent of the IBR must ...
Donaghy’s comments at Sept. 13 C-TRAN Board of Directors meeting included a report of ‘breakdowns in communication ...
Does the Interstate Bridge Replacement Program team's proposed I-5 Bridge replacement adequately address traffic co ...
Seattle resident Bob Ortblad encourages the choice of a safer crossing option. ...
