Guidance
Principal Documents
Legislation
- Bipartisan Infrastructure Law (BIL) 2021 (11/15/21)
- Fixing America's Surface Transportation (FAST) Act 2015 (12/4/15)
- Moving Ahead for Progress in the 21st Century (MAP-21) Act 2012 (7/6/12)
Regulation
- Design Standards for Highways (23 CFR 625) (01/03/2022)
- Asset Management Plans (23 CFR 515) (04/01/2017)
- 23 CFR 668 Emergency Relief Program (2011)
- Statewide and Nonmetropolitan Transportation Planning; Metropolitan Planning (23 CFR 450 and 500)
Policy
- Approval of the use of structural design standards (04/11/2022)
- Transportation System Preparedness and Resilience to Climate Change and Extreme Weather Events (FHWA Order 5520) (12/15/2014)
- Additional Guidance for Assessment of Bridges Over Waterways with Unknown Foundations (10/29/2009)
- Revision of Coding Guide, Item 113 - Scour Critical Bridges (04/27/2001)
- Agreement for the Implementation of Scour Countermeasures to Protect Foundations of Scour Critical Bridges (02/11/1997)
Guidance
- LRFD Seismic Analysis and Design of Bridges Reference Manual (October, 2014)
- Geotechnical Engineering Circular No. 3 - LRFD Seismic Analysis and Design of Transportation Geotechnical Features and Structural Foundations Reference Manual (2011)
- Load and Resistance Factor Design (LRFD) (06/28/2000)
- Revisions to The National Bridge Inspection Standards (NBIS) (T 5140.21) (09/16/1988)
- Pier Protection and Warning Systems for Bridges Subject to Ship Collisions (T 5140.19) (02/11/1983)
- Frequently Asked Questions - Bridges Over Waterways with Unknown Foundations (06/03/2009)
- Manual for Refined Analysis in Bridge Design and Evaluation (May, 2019)
Information
- Integration of Resilient Infrastructure in the Emergency Relief Program (10/11/2019)
- 2016 Interstate Standards (11/06/2018)
- Framework for Improving Resilience of Bridge Design (January, 2011)