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/ Improve MDOT's Understanding of the Acceptance and Performance of Riprap https://rip.trb.org/View/2731977 Fri, 17 Jul 2026 15:21:06 GMT https://rip.trb.org/View/2731977 Development of design guidelines for protection against erosion at bridge piers of rectangular cross section and estimating effects of pressurized flow on erosion potential https://rip.trb.org/View/2706034 Sat, 23 May 2026 17:39:45 GMT https://rip.trb.org/View/2706034 RES2023-05: Design and Application of Stormwater Conveyance from Bridge Decks https://rip.trb.org/View/2487456 Wed, 08 Jan 2025 14:40:36 GMT https://rip.trb.org/View/2487456 SPR-4834: Riprap and Aggregate Polyurethane Stabilization for Drainage, Erosion Control and Road https://rip.trb.org/View/2238730 Thu, 31 Aug 2023 16:34:53 GMT https://rip.trb.org/View/2238730 Verification of ODOT Rock Channel Design Procedures https://rip.trb.org/View/2026353 Tue, 20 Sep 2022 08:59:12 GMT https://rip.trb.org/View/2026353 Development of new design guidelines for protection against erosion at bridge abutments - Phase V https://rip.trb.org/View/1945932 Sat, 30 Apr 2022 11:42:25 GMT https://rip.trb.org/View/1945932 Development of New Design Guidelines for Protection Against Erosion at Bridge Abutments - Phase IV https://rip.trb.org/View/1867086 Mon, 19 Jul 2021 22:43:22 GMT https://rip.trb.org/View/1867086 Development of New Design Guidelines for Protection Against Erosion at Bridge Abutments - Phase III https://rip.trb.org/View/1685056 Thu, 16 Apr 2020 16:03:32 GMT https://rip.trb.org/View/1685056 Development of New Design Guidelines for Protection Against Erosion at Bridge Abutments and Embankments – Phase II https://rip.trb.org/View/1581040 Thu, 31 Jan 2019 10:22:37 GMT https://rip.trb.org/View/1581040 Development of New Design Guidelines for Protection Against Erosion at Bridge Abutments and Embankments - Phase I https://rip.trb.org/View/1501768 Thu, 08 Feb 2018 14:54:21 GMT https://rip.trb.org/View/1501768 Development and Testing of Synthetic Riprap Constructed from Coal Combustion Products (CCPs) https://rip.trb.org/View/1301302 Fri, 07 Mar 2014 01:01:38 GMT https://rip.trb.org/View/1301302