Congress is not expected to pass a new surface transportation bill before the IIJA expires on September 30, 2026. The Senate committee with jurisdiction is drafting an extension instead, and reauthorization moves to the next Congress. For A/E firms, that means 2027 federal transportation work looks like 2026 rather than like a new bill.
That distinction matters more than it sounds. If any part of your 2027 plan assumes a new bill creating new grant programs to chase, an extension is the scenario where that assumption quietly fails.
What Is Actually Happening With Reauthorization?
Two things are true at once, and headlines carry only the first.
The House Transportation and Infrastructure Committee approved the BUILD America 250 Act, a five-year, roughly $580 billion reauthorization, on a 62-2 vote in May 2026. That is real, and we covered it when it happened. Note that committee approval is not House passage, and some coverage blurs the two.
It has not gone further. According to Transportation for America, the bill is not scheduled for a floor vote, the Senate has not released competing text, and Senator Capito, who chairs the Senate committee with jurisdiction, has told reporters her committee is working on text to extend the IIJA instead. Their read is that reauthorization gets handed to the next Congress.
One caveat on that source: Transportation for America advocates for extensions. Take their committee reporting, which is checkable, and leave the policy argument.
None of this is unusual, and the last cycle shows the shape. The FAST Act expired September 30, 2020. Its one-year extension passed on the eve of expiration, attached to a continuing resolution, and held the Highway Trust Fund at existing levels: $47.1 billion for highways and $12.3 billion for transit in FY2021. Late, bolted onto other legislation, and flat. That is the scenario our action plan for the slipped markup treated as the middle case, and it is now the likely one.
What Does a Clean Extension Do to Funding Levels?
Two consequences follow from the mechanism, and they pull in opposite directions.
Existing programs keep running, flat. Formula money keeps flowing and contract authority does not lapse, so state DOTs can keep obligating. But reauthorization bills build in year-over-year growth and extensions do not, so a 2027 model that assumed a step up in federal transportation funding needs replacing with flat.
No new programs get created. This is the consequence easiest to miss, because nothing visibly happens. Every new discretionary grant program, eligibility category, and set-aside a reauthorization would have established simply does not exist. A BD plan built around positioning for those vehicles has nothing to position for, and no announcement will tell you so.
What Happens to the IIJA's Advance Appropriations?
This is what makes the current extension messier than the FAST Act one, and it is the piece most likely to decide which pursuits actually exist in 2027.
The IIJA did not fund everything through the Highway Trust Fund. Division J provided $156 billion in advance appropriations across FY2022 through FY2026, designated as emergency spending. Advance appropriations make money available for future years without further action by Congress, which is why so much competitive grant activity over the past five years never depended on annual appropriations fights.
That money expires September 30, 2026, along with everything else.
Extending it is a separate decision from extending the underlying programs, and a harder one. The Congressional Budget Office does not carry Division J as ongoing spending after FY2026, so continuing it scores as a budget increase rather than as maintaining the status quo. Meanwhile states and localities have spent five years treating total IIJA funding, Division J included, as the normal baseline. Any number below it reads locally as a cut even if core program funding holds steady.
The practical translation: the formula side is far more likely to survive an extension intact than the competitive discretionary side. Intercity rail programs and the transit Capital Investment Grants program leaned heavily on Division J, which means a firm whose transit or rail pipeline is built on competitive awards is carrying more exposure here than a firm doing highway work off state formula dollars, even though both read the same headline.
Which Pursuit Lanes Stay Stable and Which Get Volatile?
| Funding channel | What an extension likely does | What that means for your pursuits |
|---|---|---|
| Highway and transit formula funds to states | Continues at current levels | Most stable lane. State DOT and MPO programs run roughly as-is |
| Highway Trust Fund core programs | Continues, with no built-in escalation | Plan flat, not growing |
| Competitive grants that leaned on Division J | Requires a separate decision | Most volatile. Award volume and timing both uncertain |
| New programs a reauthorization would have created | Do not come into existence | Nothing to position for. Reallocate that BD effort |
Under an extension, the stable work sits with state DOTs, counties, cities, transit agencies, and MPOs spending formula dollars, plus the on-call vehicles those agencies already have. The volatile work is federal discretionary. Since 2021 the competitive grant side is where the visible growth and the headlines were, so if that is where your positioning effort went, an extension inverts the map. Firms that built a pipeline around discretionary awards have the most to re-plan.
What to Change in Your 2027 Pursuit Plan
- Find the growth assumption before it drives a hiring decision. If a 2027 federal step-up sits in a business plan somewhere, it needs to come out now, not in March.
- Move positioning effort toward formula-funded clients. State DOTs, counties, municipalities, transit agencies, MPOs. State DOT prequalification is the gate, and it runs on the agency's calendar rather than yours, so start before the solicitation posts.
- Get on the vehicles that already exist. On-call, IDIQ, and MATOC contracts do not depend on a new bill creating anything. Under flat funding, an on-call seat beats a speculative pursuit.
- Stop holding capacity for grant programs that are not coming. Whatever your team reserved for a new-bill cycle, redirect it now.
- Watch the discretionary side without betting on it. Track whether Division J gets extended. Until it does, treat competitive grant volume as a possibility rather than a plan. Our look at funding concentration in go/no-go scoring covers how to weight it without overcorrecting.
None of that is bad news for the client base. Formula money continuing at current levels is still a great deal of work, just distributed differently than a new bill would have distributed it.
What changes is where growth comes from. In a flat year you do not grow on a bigger federal bet. You grow by winning more of the work already in front of you, which turns a strategy question into a capacity question: how many more qualifications packages can your team put out without adding people? Firms that keep staff and project records in reusable shape answer that differently than firms rebuilding each package from scratch.
When This Does Not Change Anything for You
If your practice is mostly municipal, water, site development, or private, an extension barely touches you. The WRDA and water funding picture is the one to watch instead, and it carries its own September 30 problem.
And if a reauthorization passes sooner than expected, little of the advice above is wasted. Prequalification, on-call seats, and reusable qualifications pay off under any funding scenario. That is the test of a plan: it should still be right if the prediction is wrong. The longer view on what expiration does to a pipeline holds either way.
Frequently Asked Questions
Is the IIJA expiring in 2026?
The IIJA's surface transportation authorization expires September 30, 2026. Expiration does not mean federal transportation funding stops. Congress is expected to pass an extension continuing existing programs at current funding levels while full reauthorization moves to the next Congress.
What is the status of the BUILD America 250 Act?
The House Transportation and Infrastructure Committee approved it 62-2 in May 2026, but it has not received a House floor vote and the Senate has not released its own bill text. As of late July 2026 it was not scheduled for floor consideration.
What is the difference between an extension and a reauthorization?
A reauthorization is a new multi-year bill that sets funding levels, creates programs, and changes policy. An extension continues the existing law as written, usually at current funding levels, for a shorter period. Extensions do not create new grant programs or build in annual funding growth.
Will federal transportation funding drop if the IIJA is extended?
Core program funding generally continues at current levels under a clean extension. The uncertainty sits with the $156 billion in advance appropriations from Division J, which expire on the same date and require a separate decision to continue. Competitive discretionary grants are more exposed than formula funds.
What are advance appropriations in the IIJA?
Advance appropriations make funding available for future fiscal years without further action by Congress. The IIJA's Division J provided $156 billion this way across FY2022 through FY2026, designated as emergency spending. Much of the competitive grant activity of the past five years drew on it, and it expires September 30, 2026.
What should A/E firms do differently under an extension?
Plan federal transportation revenue as flat rather than growing, shift positioning effort toward formula-funded state and local clients, pursue prequalification and existing on-call vehicles, and stop reserving proposal capacity for grant programs that a new bill would have created but an extension will not.