• AASHTO Practitioners Handbook: Consulting Under Section 106 of the National Historic Preservation Act.

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Section 4(f) and Section 106

• Final Nationwide Section 4(f) Evaluation and Approval for Federally-Aided Highway Projects with Minor Involvements with Historic Sites [PDF 381kb], (December 23, 1986)
• Programmatic Section 4(f) Evaluation and Approval for FHWA Projects that Necessitate the Use of Historic Bridges [PDF 380kb], (July 5, 1983)
• National Evaluations for Projects with Minor Section 4(f) Involvements [PDF 87kb], (December 23, 1986)

Tribal Consultation

• DOT Order 5301.1 - Department of Transportation Programs, Policies, and Procedures Affecting American Indians, Alaska Natives, and Tribes, November 16, 1999 [PDF 106kb]
• INFORMATION Memorandum: Working With Tribal Governments on Historic Preservation Effort, (August 7, 2001)

Historic Bridges

• INFORMATION Memorandum Interpretation of Title 23, Section 144(o) Reasonable Costs Associated With the Demolition of Historic Bridges. (April 26, 2001)
• Memorandum: Surface Transportation and Uniform Relocation Assistance Act of 1987 Section 123(f) Historic Bridges [PDF 465kb], (July 22, 1987)

General Research, Documents and Report

• Memorandum: Programmatic Agreement on Transportation Enhancements [PDF 482kb], (June 11, 1997)
• Memorandum: Eligibility of Historic Preservation Work for Transportation Enhancement Funding [PDF 167kb], (June 6, 1995)
• Memorandum: Issuance of New Regulation on Curation of Archeological Collections (36 CFR Part 79) [PDF 56kb], (November 26, 1990)
• Memorandum: ACHP Guidance Document on Working with Section 106 [PDF 116kb]
• Memorandum: Section 106 Policy Guidance Interpretation of Setting [PDF 107kb], (August 30, 1989)
• Memorandum: Section 106 Policy Guidance Interpretation of Setting [PDF 421kb], (December 5, 1989)
• Memorandum: FHWA Guidance on the Consideration of Historic and Archeological Resources in the Highway Project Development Process [PDF 1.53mb], (December 23, 1988)
• Memorandum of Understanding: Emergency Procedures Applicable to Unanticipated Cultural Resources Discovered During Construction of Federal-Aid Highways [PDF 143kb], (September 23, 1980)

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Section 106

• Regulations Text (August 2004)
• Regulations Summary (April 2002)
• Regulations Flow Chart and Explanatory Material (February 2001)
• Section-by-Section Questions and Answers (April 2002)
• Citizen's Guide to Section 106 Review (October 2003)
• "Using Section 106 to Protect Historic Properties" (May 2003)
• Extension of Emergency Provisions under 36 CFR Part 800.12 
• Section 106 Consultation Involving National Historic Landmarks 
• Federal Alternate Procedures 
• Fees in the Section 106 Review Process 
• Section 106 Archeology Guidance
• ACHP Exemption Regarding Historic Preservation Review Process for Effects to the Interstate Highway System [PDF 64kb]

Tribal Consultation

• ACHP Policy Statement Regarding ACHP's Relationships with Indian Tribes 
• Consulting with Indian Tribes in the Section 106 Review Process 
• Native Hawaiian Organizations and the Section 106 Review Process 
• Relationship Between E.O. 13007 Regarding Indian Sacred Sites and Section 106 
• Policy Statement Regarding Treatment of Burial Sites, Human Remains, and Funerary Objects (February 2007)

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• Minnesota Department of Transportation's Deeply Buried Archaeological Site Testing Protocol Project

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• Guidelines for Historic Bridge Rehabilitation and Replacement (NCHRP Project 25-25 (Task 19) March 2007)
• A Guide to Incorporating Geophysical Remote Sensing in Transportation Archeological Investigations (NCHRP Project 25-25 (Task 21) September 2006)
• Managing Archeological Investigations, A Synthesis of Highway Practices [PDF 519kb], (NCHRP Synthesis Report 347)
• Transportation Research Circular Number E-C055, August 2003, National Forum on Assessing Historic Significance for Transportation Programs, May 23-25, 1999.
• Evaluating Cultural Resource Significance: Implementation Tools, National Cooperative Highway Research Program, Report 542
• Tribal Transportation Programs, (NCHRP Synthesis Report 366, March 2007)

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 FHWA Information, Guidance and Programs

• FHWA’s Historic Bridges Web site - Includes links to FHWA bridge programs, state programs, and other resources on historic bridges.
• FHWA Highway Bridge Replacement and Rehabilitation Program
• Information Memorandum: Interpretation of Title 23, Section 144(o) Reasonable Costs Associated with the Demolition of Historic Bridges (April 26, 2001)

General Reports and Documents

Links to Historic Bridge Websites

• Historic Bridge Foundation (Web site contains many links to information on the country’s historic bridges. Includes information on historic bridges in Texas)
• Historic Bridges of the Midwest

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• PB’s Highway Sustainability Checklist [ZIP] - This checklist was selected by AASHTO as the winning U.S. entry in the Sustainable Development category for the 2007 World Road Association’s (PIARC) International Competition. The checklist was developed in response to growing interest in an objective, non-prescriptive, broad-based tool that would support the integration of environmental stewardship practices and CSS into day-to-day highway-related practices.  The checklist is a compendium of possible measures associated with various phases of highway projects—from planning to design, through construction, operations and maintenance.  It is meant to facilitate decisions about the extent to which highway improvements might incorporate measures that go beyond satisfying minimum functional requirements by addressing contextual factors which contribute to sustainability of the natural, built, and human environments. The checklist is flexible and may be adapted to individual agencies or specific project applications.

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