Check out the following technical note posted on the AASHTOWare BrDR Technical Support website at https://aashtowarebrdr.org/ on March 23, 2026. To access BrDR Technical Notes, navigate to the Bridge Design and Rating menu at the top, select Technical Notes from the menu, and login using brdr.
- Technical Note 88 – LFR Shear Rating – Vci / Mcr Calculation – For LFR shear load ratings of prestressed concrete members, the computation of the cracking moment parameter, Mcr, used in Eq. (9-27) for the girder shear strength provided by concrete controlled by flexure-shear cracking, Vci, is incorrect for points-of-interest (POIs) located in negative moment regions. See Technical Note 88 – LFR Shear Rating – Vci / Mcr Calculation for more information.
Please direct any questions to AASHTOWare Bridge Design and Rating Technical Support at BrDR@promiles.com.