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/ Comparing Resistivity and Conductivity in Metal Culverts https://rip.trb.org/View/2582927 Tue, 05 Aug 2025 13:13:14 GMT https://rip.trb.org/View/2582927 Role Of Grout And GFRP Slip Liner On The Circumferential Behaviour Of Retrofitted Corroded Metal Culverts https://rip.trb.org/View/2404267 Sun, 21 Jul 2024 14:59:54 GMT https://rip.trb.org/View/2404267 Field retrofit and testing of a corroded corrugated metal culvert using Glass Fiber Reinforced Polymers https://rip.trb.org/View/1751163 Tue, 10 Nov 2020 21:14:53 GMT https://rip.trb.org/View/1751163 Plastic Pipe for Highway Construction-Phase 2 https://rip.trb.org/View/1360383 Thu, 09 Jul 2015 01:00:19 GMT https://rip.trb.org/View/1360383