IBR Bridge Safety: Trucks Capped at 20 MPH?

Seattle engineer Bob Ortblad used AI to analyze the IBR's temporary diversion design, a 76-foot-wide roadway meant to carry six lanes of traffic. The result: a safe speed of 30 mph for cars and just 20 mph for trucks in dry conditions, dropping further in wind, rain, or ice. Ortblad also says IBR administrator Carley Francis has refused to allow WSDOT and ODOT safety engineers to conduct an independent safety analysis of the bridge design. https://clarkcountytoday.com/opinion/letter-ibrs-top-truck-speed-20-mph/ #IBR #Interstatebridge #BridgeSafety #Transportation #WashingtonState #ClarkCounty #Opinion #Infrastructure #Vancouver #WSDOT