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Sustainable Highways Research, analysis, and practical insight on roads and transportation infrastructure.

Independent publication

The instrument that lived at this address

The acronym expanded to five words in an awkward order: infrastructure, voluntary, evaluation, sustainability, tool. FHWA's plainer public name for the same thing was the Sustainable Highways Self-Evaluation Tool. The agency built it as a web application holding voluntary best practices, which it called criteria, spanning system planning, project planning, design, construction, and operations and maintenance. An agency registered, picked a module, and scored itself. A reader who followed a citation here and wants to know whether the URL was ever what the footnote claimed has a short documentary answer: the agency's 2014 research publication numbered FHWA-HRT-14-091 describes the tool and gives its address as this domain.

Why a surviving INVEST score is not a condition rating

Scoring was self-administered and confidential. The program's own frequently asked questions page recorded that FHWA could not certify agency and project scores, and that neither the use of the tool nor any achievement level was ever a prerequisite for federal funding. Projects could earn achievement levels named bronze, silver, gold and platinum, and the page explaining what a Project Development score meant was careful about what those levels represented: because the tool rested on no third-party validation, a level was recognition that the user had self-evaluated and met it, rather than recognition by FHWA that the project had.

The criteria also awarded nothing for work the law already required. Asked why agencies got no credit for complying with environmental and other applicable statutes, the program named the National Environmental Policy Act, the Clean Water Act and the Clean Air Act, said the importance of compliance should not be minimized, and then set the tool's purpose against it: a sustainability tool should challenge agencies to go "above and beyond" compliance. INVEST measured practice above the regulatory floor, which is why a score was never a condition rating and never comparable to one.

The earliest capture, before the name

The Internet Archive's oldest content capture of this domain, dated January 20, 2011, shows the instrument before it had the name the citations use. It was then the FHWA Sustainable Highways Self-Evaluation Tool, its scoring units were called credits rather than criteria, and the page source still carried unreplaced Latin placeholder text in one section where the copy had not been written yet. FHWA's Transportation Planning Update dates public availability of a beta version to 2010. The INVEST name, and the vocabulary of criteria and scorecards, arrived with the released versions.

What the modules held, and what the point totals add up to

The criteria counts most often quoted for INVEST come from FHWA's 2015 reference document Towards Sustainable Pavement Systems, catalogued as FHWA-HIF-15-002, which recorded System Planning at 17 criteria and 250 points, Project Development at 29 criteria and 126 points, and Operations and Maintenance at 14 criteria and 210 points. Those totals, and the weighting order inside them, are examined in this site's account of what the criteria actually weighted.

The tool outgrew that description while the document was still current. Version 1.2, released in September 2015, replaced the single System Planning module with System Planning for States and System Planning for Regions, the first for agencies that own infrastructure and plan at corridor and landscape scale, the second for metropolitan planning organizations and councils of government that generally do not own it. Criteria topics stayed identical across the two. Project Development grew to 33 criteria in that release, which by FHWA's own revision summary added five criteria to the module and removed one. By the captures taken in 2024, the tool's criteria overview counted 81 criteria in total: the two System Planning modules holding "sixteen criteria plus one bonus criteria" each, Project Development holding 33 across six fixed scorecards and one custom scorecard, and Operations and Maintenance holding 14 "including four aimed at internal operations and ten focused on maintenance and operations of the highway system".

Those two descriptions reconcile arithmetically, which is worth showing because it lets a reader check a decade-old figure without the tool. Outside Project Development, the criteria carried no differential weighting at all: the program's weighting page recorded every System Planning and Operations and Maintenance criterion at 15 points, with the System Planning bonus valued at 10. Sixteen criteria at 15 points plus a 10-point bonus is the 250 that FHWA-HIF-15-002 reports for System Planning, and fourteen at 15 is its 210 for Operations and Maintenance. Only Project Development was weighted by expected impact and by how long that impact lasts, which is why its 126 points across the larger criteria count looks anomalous beside the other two and is not.

The module split is easy to lose when an old score is quoted without naming which module produced it. A state department of transportation and a metropolitan planning organization were graded against criteria sets that shared a numbering habit and a name. Project Development compounded the problem from the other direction, because its several scorecards existed so that projects of unlike scope were not held to an identical list. A bare INVEST number carries no meaning without its module, its version, and, for a project, its scorecard.

The version history, kept by the program itself

The program published its own account of how it changed, and it is specific. Criteria for the original beta, in 2010, came from research into transportation sustainability practice and were then revised through comment from state and local agency staff and from professional bodies including AASHTO and ASCE. A pilot test version followed for evaluation across a range of agencies, projects and geographies. FHWA launched INVEST 1.0 in October 2012 with a national webcast that included remarks from the agency's Deputy Administrator. Version 1.1 arrived in January 2015 and version 1.2 in September 2015, both driven by feedback from the partnerships FHWA solicited after the 1.0 release. Version 1.3, responding to comments gathered from 2017, launched on Earth Day 2018 and was the last.

The 1.0 release also destroyed data, a detail FHWA's Transportation Planning Update for October 2012 recorded alongside the October 10 release date: everything scored under the earlier versions was retired with them. The same pattern of institutional volatility runs through the three rating systems compared, which treats that notice at length.

Who used it, and why the count is a floor

A page titled Who is using INVEST? published the program's own tally. In a capture dated June 16, 2024 it reported 15 state departments of transportation, 25 metropolitan planning organizations, 23 Federal Lands units, 7 other United States transport agencies covering local, transit and tollway bodies, and 1 foreign government, alongside more than 2,025 registered users and more than 2,400 projects or programs evaluated.

The same page attached the qualification that turns those figures into a lower bound rather than a census. Because "the use of INVEST is confidential", FHWA learned of an evaluation only when the agency running it chose to say so. An agency could score a program and never appear in any count. The earlier federal figure sits comfortably under that caveat: in September 2014 the research report FHWA-HRT-14-091 put use at 29 agencies across 25 states and the District of Columbia, and no later federal count has surfaced in this publication's research.

The program's archived case studies and that usage table name the agencies between them. They include Washington State DOT on corridor studies and the SR 520 bridge project, Caltrans across planning, programming and maintenance, Ohio DOT on the Cleveland Innerbelt and the George V. Voinovich Bridge, the Illinois Tollway, the North Central Texas Council of Governments at Dallas, Utah DOT on operations and maintenance, TxDOT on contracting for the Corpus Christi Harbor Bridge, MassDOT, PennDOT, DelDOT, Rhode Island DOT, Montana DOT, Arizona DOT on roundabouts and on its statewide program, TriMet on the Portland to Milwaukie light rail project, the Cape Cod Commission, MetroPlan Orlando, Puget Sound Regional Council, and Federal Lands Highway divisions working on the Grand Loop Road in Yellowstone, the Going-to-the-Sun Road in Glacier, Newfound Gap Road in Great Smoky Mountains, the Halstead Meadow Bridge in Sequoia, road maintenance in Denali, and projects at the National Mall. The single international entry was the Ministry of Public Works of Paraguay, which used INVEST on a 90-kilometer road at Tavai under a project funded by the Inter-American Development Bank.

The federal host with the similar name

This domain and a similarly named federal host are easy to confuse in a footnote, and they held different things. FHWA ran the Sustainable Highways Initiative, the umbrella program, at sustainablehighways.dot.gov, and the INVEST tool itself sat at sustainablehighways.org. A capture of the .dot.gov site from November 2012 shows the Initiative's mission statement above a button sending visitors across to the tool at this address.

The federal host has since gone quiet. FHWA's sustainability landing page still points its Sustainable Highways Initiative link at sustainablehighways.dot.gov, but the Internet Archive holds no capture of that host dated 2024 or later, and on August 15, 2026 a request to it returned no page to this publication.

The shutdown, and what came next

The site had been reachable for more than fourteen years when its ending was announced on its own homepage. The last capture that still shows the working tool is dated June 19, 2025, and it carries a banner reading "INVEST will no longer be accessible starting June 30, 2025." Nothing on the page named a successor instrument.

Legacy paths from the INVEST era resolve here in a single hop, glossary paths resolve to the glossary, and curriculum paths to research and resources. Paths created during the 2025 content operation receive no redirect and return a 404, which is the correct answer for URLs that never held anything worth preserving.

Where FHWA's sustainability material sits now

The Sustainable Highways Initiative survives as a page rather than as a program with tools attached. As updated on January 15, 2026, it describes itself in one sentence: the Initiative supports work across FHWA "to facilitate balanced decision-making among environmental, economic, and social values", the triple bottom line. There is no instrument on the page, and the Energy and Emissions link offered on the parent sustainability page returned FHWA's own page-not-found notice when followed on August 15, 2026.

Resilience is where the federal effort now has substance. FHWA frames that work as assessing vulnerabilities first, then carrying resilience into the planning process, into asset management plans, into project development and design, and into operations and maintenance practice. The guidance it lists behind that framing is Hydraulic Engineering Circular 17 on highways in the river environment and the third edition of Circular 25 on highways in the coastal environment, published in January 2020. This site covers that ground in climate and resilience.

What this page holds, and what it will never hold

No scorecards, no criteria write-ups, no compendia, no user workspace. Republishing the criteria text would dress a withdrawn federal instrument up as a live one, and a reader scoring a project against a 2018 document under this publication's name would be working from something nobody stands behind. Researchers who need the tool's own wording will find the INVEST compendia, user guide and fact sheet inside the Internet Archive's captures of this domain, and FHWA remains the authority on its own retired programs.

What replaces it here is ordinary editorial work: sourced reporting on how roads are designed, funded, built and maintained, held to the sourcing rules set out in the editorial standards.


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