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/ Rewrite and Modernize the Manual for Bridge Evaluation for Compliance with the Revised National Bridge Inspection Standards https://rip.trb.org/View/2712177 Tue, 09 Jun 2026 14:57:30 GMT https://rip.trb.org/View/2712177 Methodology for Assigning Load Factors for AASHTO Rating Vehicle https://rip.trb.org/View/2613366 Fri, 24 Oct 2025 15:02:31 GMT https://rip.trb.org/View/2613366 New Methods for Improving Load Rating of Existing Steel Bridges for Torsional Buckling https://rip.trb.org/View/2593955 Thu, 28 Aug 2025 13:51:08 GMT https://rip.trb.org/View/2593955 Combined Inertial and Lateral Spread Demands for Deep Foundations https://rip.trb.org/View/2558398 Wed, 28 May 2025 10:06:55 GMT https://rip.trb.org/View/2558398 Evaluation of Load Ratings for Alaska Legal Loads Exempted by Federal Law https://rip.trb.org/View/2512619 Fri, 21 Feb 2025 21:37:37 GMT https://rip.trb.org/View/2512619 Implementation of AASHTOWare BrR Program for Rating Iowa Bridges https://rip.trb.org/View/2484651 Mon, 30 Dec 2024 12:26:47 GMT https://rip.trb.org/View/2484651 Silane Bridge Deck Ratings https://rip.trb.org/View/2464348 Tue, 26 Nov 2024 11:49:06 GMT https://rip.trb.org/View/2464348 Estimation of the Load Rating of Existing Highway Bridges Based on Bridge Weigh-in-Motion Data https://rip.trb.org/View/2417475 Fri, 16 Aug 2024 10:19:41 GMT https://rip.trb.org/View/2417475 Evaluating Concrete Girders with Non-compliant Shear Details https://rip.trb.org/View/2381726 Tue, 21 May 2024 17:25:13 GMT https://rip.trb.org/View/2381726 Efficient and Cost-effective Rating of Critical Members of Steel Truss Railroad Bridges Supported by Field Test Data (1.21) https://rip.trb.org/View/1996225 Wed, 01 May 2024 16:57:04 GMT https://rip.trb.org/View/1996225 Intelligent Asset Management for Improved Mobility: Technology Transfer for South Carolina https://rip.trb.org/View/2335143 Tue, 06 Feb 2024 17:23:58 GMT https://rip.trb.org/View/2335143 Load Rating and Posting of Long-Span Bridges https://rip.trb.org/View/2296638 200 feet. Long-span bridges get special engineering analysis in the design phase, but methods for evaluating them in service are limited. To ensure public safety while sustaining commerce and preserving vital infrastructure, methods for rational load rating, permitting, and posting are essential. Research is needed to help state departments of transportation evaluate their long-span bridges. The objective of this research is to develop procedures for load rating, posting, and permitting of highway bridges with spans greater than 200 feet in length. It shall consider all applicable load effects.]]> Mon, 27 Nov 2023 19:28:48 GMT https://rip.trb.org/View/2296638 Evaluating Prestressed Concrete Beams with Cracks using Machine Learning https://rip.trb.org/View/2250379 Mon, 18 Sep 2023 22:04:55 GMT https://rip.trb.org/View/2250379 RES2022-02: Load Rating of Girder-Stringer-Floor Beam Bridges https://rip.trb.org/View/2237077 Wed, 30 Aug 2023 10:56:14 GMT https://rip.trb.org/View/2237077 Ice Loading on Piers for Minnesota’s Bridges https://rip.trb.org/View/2209758 Tue, 11 Jul 2023 12:30:30 GMT https://rip.trb.org/View/2209758