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/ Revolutionizing Coastal Infrastructure Durability with Pervious Concrete: A Cost-Effective, High-Performance Seawall https://rip.trb.org/View/2696019 Thu, 23 Apr 2026 16:44:25 GMT https://rip.trb.org/View/2696019 Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments https://rip.trb.org/View/2683238 Thu, 26 Mar 2026 14:22:28 GMT https://rip.trb.org/View/2683238 Automating the Lateral Strength Assessment of the American Association of State Highway and Transportation Officials (AASHTO) Standard and Substandard Concrete Barriers https://rip.trb.org/View/2655577 Thu, 15 Jan 2026 12:25:04 GMT https://rip.trb.org/View/2655577 Probabilistic rock mass quality prediction model and its application to tunneling design (UTI-UTC 31) https://rip.trb.org/View/2543424 Wed, 07 May 2025 17:19:00 GMT https://rip.trb.org/View/2543424 Establishing Design Loads, Load Combinations, and Structural Design Methodology for OCS Poles and Foundations https://rip.trb.org/View/2464331 Tue, 26 Nov 2024 05:33:49 GMT https://rip.trb.org/View/2464331 Review and Recommend Updates to ACRP Airport Design and Construction Products https://rip.trb.org/View/2413899 Mon, 05 Aug 2024 19:21:44 GMT https://rip.trb.org/View/2413899 Synthesis of Information Related to Highway Practices. Topic 56-20. Pavement Design and Evaluation of Low Volume Roads with Heavy Loads https://rip.trb.org/View/2384708 Fri, 31 May 2024 20:08:56 GMT https://rip.trb.org/View/2384708 Guide for Digital Project Delivery: Integrating Design and Construction https://rip.trb.org/View/2381719 Tue, 21 May 2024 17:06:51 GMT https://rip.trb.org/View/2381719 Fast and Efficient Welding Inspection of Structural Steel Using Adaptive Phased Array Ultrasonic NDT https://rip.trb.org/View/2342179 Wed, 21 Feb 2024 08:16:42 GMT https://rip.trb.org/View/2342179 Impact of Extreme Weather in Midwest on Highway Infrastructure Condition and Safety https://rip.trb.org/View/2341573 Mon, 19 Feb 2024 16:01:46 GMT https://rip.trb.org/View/2341573 Analysis of the Poplar Creek Box Culverts https://rip.trb.org/View/2313954 Thu, 21 Dec 2023 10:32:27 GMT https://rip.trb.org/View/2313954 Integrated Technology‐Based Design, Inspection, and Maintenance for More Resilient Bridges https://rip.trb.org/View/2262774 Fri, 06 Oct 2023 11:04:24 GMT https://rip.trb.org/View/2262774 Seismic Behavior of Hider Wing-Walls https://rip.trb.org/View/2190086 Fri, 02 Jun 2023 19:52:59 GMT https://rip.trb.org/View/2190086 Load path redundancy as a protection measure - Phase 1 https://rip.trb.org/View/2096578 Fri, 13 Jan 2023 14:49:22 GMT https://rip.trb.org/View/2096578 Durability of Modified Helical Piles Under Lateral and Torsional Loads: Embracing Efficient Alternatives to Support Lightweight Transportation Structures (C17.2020) https://rip.trb.org/View/1876107 Fri, 15 Jul 2022 15:50:06 GMT https://rip.trb.org/View/1876107