Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Precast Ductile End-Diaphragm System for Accelerated Construction of Slab-On-Girder Prestressed Concrete Bridges in Seismic Regions https://rip.trb.org/View/2221113 Mon, 31 Jul 2023 00:17:08 GMT https://rip.trb.org/View/2221113 Design of Continuity Diaphragms Following New AASHTO Provisions https://rip.trb.org/View/2078697 Thu, 08 Dec 2022 10:46:04 GMT https://rip.trb.org/View/2078697 SMART Shear Keys for Tsunami/Storm Surge-Hazards Mitigation of Concrete Girder Bridges https://rip.trb.org/View/1945810 Sat, 30 Apr 2022 11:47:45 GMT https://rip.trb.org/View/1945810 SMART Shear Keys for Multi-Hazards Mitigation of Diaphragm-Free Girder Bridges - Phase III https://rip.trb.org/View/1703754 Thu, 30 Apr 2020 15:17:00 GMT https://rip.trb.org/View/1703754 UHPC connection for SDCL steel bridge system https://rip.trb.org/View/1697890 Thu, 16 Apr 2020 08:58:04 GMT https://rip.trb.org/View/1697890 SMART Shear Keys for Multi-Hazards Mitigation of Diaphragm-Free Girder Bridges - Phase I https://rip.trb.org/View/1501809 Thu, 08 Feb 2018 15:00:53 GMT https://rip.trb.org/View/1501809 Bidiretional-Ductile End Diaphragms for Seismic Performance and Substructure Protection https://rip.trb.org/View/1334859 Wed, 10 Dec 2014 01:02:37 GMT https://rip.trb.org/View/1334859 Lightweight Concrete Modification Factor for Shear Friction https://rip.trb.org/View/1286101 Thu, 16 Jan 2014 01:00:24 GMT https://rip.trb.org/View/1286101