The United States Interstate Highway System serves as the backbone of American commerce and personal travel. Funded as a pay-as-you-go basis largely through federal excise taxes on motor fuel, today it accounts for 25 percent of total vehicle-miles traveled despite accounting for just 2.5 percent of total road network lane-miles. Yet, much of the Interstate system, construction of which began in the 1950s, is nearing the end of its functional life, along with the infrastructure of other surface transportation modes. Over the next two decades, trillions of dollars of investment will be needed to rehabilitate and in some cases rebuild this infrastructure, according to some estimates.
Since 2008, Congress has bailed out the federal Highway Trust Fund to the tune of $140 billion as motor fuel tax receipts have stagnated while spending has continued to increase. In addition to the revenue-outlay imbalance at the federal level, outdated federal restrictions on highway tolling have denied to states opportunities to tailor transportation policy and funding to fit their residents’ needs. This status quo is not sustainable.
In recent years, there have been calls to increase federal motor fuel excise tax rates in order to address what many have called an infrastructure crisis. To be sure, there are very real infrastructure needs in the United States, but they are not uniform across infrastructure asset classes and are not primarily the result of a lack of federal funding. A more nuanced, targeted approach is needed to better address these challenges.
To tackle these challenges, Congress should focus on alternatives to the status quo that could more efficiently target infrastructure investments and increase the returns on those investments. Such an approach would benefit the public—taxpayers, infrastructure users, and consumers. This would involve reassessing the federal role in the provision of transportation infrastructure, examining alternatives to existing user taxes, and removing government barriers to investment.
Specifically, Congress should:
- Eliminate federal spending outside of highway freight corridors or at the very least allow federal capital funding to be redirected toward operations and maintenance activities;
- Establish a mileage-based user fee pilot program to examine a shift away from motor fuel user taxes;
- Eliminate federal prohibitions on states tolling their own Interstate segments;
- Eliminate the private activity bond lifetime volume cap and expand project eligibility;
- Eliminate procurement, labor, and environmental rules that unnecessarily increase costs and delay project delivery.
The Untenable Status Quo in Transportation Infrastructure Policy. Contrary to a common narrative, infrastructure does not face a broad immediate crisis in the U.S. Private infrastructure owned and managed by freight rail and telecommunications firms is generally of high quality and is improving either without or with minimal taxpayer support. Public highway infrastructure is also of medium quality—although there is large variation across the states—and modestly improving, with the number of structurally deficient bridges and pavement roughness of the National Highway System seeing steady declines over the last three decades, according to the Bureau of Transportation Statistics.
We do see public infrastructure problems concentrated in America’s cities. The U.S. Department of Transportation estimated transit networks faced a maintenance backlog of nearly $90 billion in 2015 and is expected to continue growing. The failure of state and local governments to carry out routine maintenance following initial construction has also led to decay of airports, urban surface streets, and water and wastewater networks. Deferring routine maintenance not only leads to lower quality infrastructure, but increases the future costs of restoring infrastructure to a state of good repair.
Population growth has greatly outpaced expansion of U.S. highway lane-miles. This plus poor management practices have resulted in crippling peak-hour traffic congestion in urban areas throughout the U.S. In 2015, the Texas A&M Transportation Institute (TTI) estimated that traffic congestion resulted in 3 billion gallons of wasted fuel and nearly 7 billion hours in wasted time per year. The nationwide cost was estimated to be $160 billion, or $960 per rush-hour commuter. This represented a 140 percent increase in commuting delay and wasted fuel congestion costs since 1982.
But the TTI congestion analysis looks only at commuting motorists’ travel time delay and wasted fuel costs. When considering the costs associated with productivity losses, unreliability losses, truck cargo delays, and safety and environmental costs, the total annual economic cost of congestion was estimated by the chief economist of the U.S. Department of Transportation to be more than double the TTI estimate.
Further complicating matters is the heavy reliance on fuel excise taxes to fund the majority of federally aided infrastructure projects. Inflation has steadily eroded the purchasing power of motor fuel tax revenue, where tax rates were last raised in 1993. Increasing fuel efficiency and electrification of the vehicle fleet has led to declining revenue per vehicle-mile traveled. In turn, this has increased the regressive nature of motor fuel taxes, as lower-income Americans tend to drive older, less fuel efficient vehicles. With Interstate Highway System repair needs estimated to be more than $1 trillion over the next two decades, something must be done to ensure U.S. transportation infrastructure can continue to be a productive force on the U.S. economy.
Reassessing the Federal Role in Transportation Infrastructure. The federal role in transportation infrastructure spending is primarily in the form of capital grants to state and local governments, which are then responsible for the operation and maintenance of those infrastructure facilities. As a share of gross domestic product, these public investments have remained stable over the last four decades across all transportation infrastructure asset classes.
The federal government is responsible for approximately one-quarter of total public spending on highways and mass transit. State and local governments fund the rest. Aviation infrastructure spending is more evenly split between federal and state and local governments, with the federal share of aviation infrastructure spending being concentrated in the Federal Aviation Administration’s air traffic control system. According to the Congressional Budget Office, federal, state, and local governments spent a combined $299 billion on highway ($177 billion), mass transit ($70 billion), aviation ($37 billion), water ($10 billion), and intercity passenger rail ($5 billion) infrastructure in 2017.
As networks have matured, the continued lopsided federal role in capital spending has created perverse incentives for state and local governments to seek new-build projects rather than maintain what has already been built. This, combined with the fact that states and localities are mainly responsible for maintenance of built infrastructure long after the feds have left town, has led to significant over-expansion of mass transit systems that state and local government owners cannot afford to maintain.
To put this in perspective, just 5 percent of American workers aged 16 years and older commuted to work via mass transit in 2017 according to Census Bureau data. In contrast, 76 percent of workers drove alone and 9 percent carpooled. Despite this, in 2017, mass transit received 28 percent of total federal, state, and local surface transportation funding—more than five times its commuting mode share and 11 times mass transit’s share of total commuting and non-commuting trips.
While the largely user-supported highway system moves more than $10 trillion worth of freight every year in the U.S., mass transit moves zero freight while enjoying substantial diversions of revenue collected from road users. The 25 percent of federal highway user tax revenue diverted to non-highway projects has put the long-term solvency of the Highway Trust Fund in jeopardy.
A rationalized federal role in transportation infrastructure would focus on projects with true national significance that facilitate interstate commerce and international trade: freight movements. The Constitution explicitly recognizes these roles as federal functions. Mass transit systems that exist primarily to move local commuters, and do not move any freight, cannot be appropriately deemed to be nationally significant. This is not to say that New York City’s subway system is not vitally important to New Yorkers, only that construction and maintenance of mass transit systems is more appropriately addressed by individual metropolitan areas who best know their particular transportation and land-use needs.
Short of eliminating federal funding for non-nationally significant projects, Congress could deemphasize the federal role in capital spending and allow for more of those funds to be spent on maintenance activities under a “fix it first” strategy.
Examining Alternatives to Existing Transportation Infrastructure User Taxes. A top priority in federal transportation infrastructure policy should be to preserve and strengthen the longstanding users-pay/users-benefit fiscal principle. This approach offers several advantages over general revenue funding:
- Fairness: Highway users benefit from the improvements their user taxes generate.
- Proportionality: Users who drive more pay more.
- Funding predictability: Highway use and highway user revenues do not fluctuate wildly in the short-run.
- Signaling investment: Because revenue roughly tracks use, the mechanism provides policy makers with an important signal as to how much infrastructure investment is needed to maintain a desired level of efficiency.
The approach was adopted under the Federal-Aid Highway Act of 1956 and the accompanying Highway Revenue Act, which established the Highway Trust Fund. Excise taxes on gasoline and diesel account for nearly 90 percent of total Highway Trust Fund revenue. These are collected from fuel producers and importers, who then pass most of the tax burden onto consumers. The current rates of 18.4 cents per gallon of gasoline and 24.4 cents per gallon of diesel were last raised in 1993.
At a time when toll collection required stopping at toll booths and resulted in high administrative costs and traffic congestion, per-gallon taxation of fuel served as an appropriate user tax when road users with similarly weighted vehicles consumed roughly the same amount of fuel per mile driven. However, fuel consumption is becoming an increasingly poor proxy for highway use. As the vehicle fleet continues to achieve improved fuel economy and gradually electrifies or otherwise moves away from fossil fuels, an alternative to motor fuel taxes as the primary highway revenue source is needed.
In recent decades, electronic tolling has done away with costly tollbooth collections and associated congestion. Current technology allows drivers with inexpensive in-vehicle transponders to pay their tolls while moving at highway speeds under overhead gantries. The administrative and evasion—leakage—costs of motor fuel tax collection and all-electronic toll collection have been estimated to be in the vicinity of 5 percent of revenue collected. If all-electronic, open-road tolling networks were to be expanded throughout the U.S., the administrative and leakage cost shares would likely fall as scale economies are realized.
Looking toward a future when motor fuel tax increases would be both ineffective in raising revenue and highly regressive, a number of states in recent years have been piloting new mileage-based revenue collection technologies and practices, which are variously known as mileage-based user fees, road usage charges, and vehicle-miles traveled taxes. All refer to the same approach, whereby users are directly charged based on the distances (and perhaps weight of the vehicle) they drive, which is as close to optimal road charging as current technology permits.
Oregon has the most advanced pilot in operation. Established by 2013 legislation, the program’s volunteers can opt for two versions of mileage-recording technology: non-location-based supplementary odometers and a location-based option that can offer users more precision and add-on features such as geofenced alerts for parents of teen drivers. Participants are refunded their estimated fuel tax payments upon transmission of their mileage data.
Privacy is obviously a major issue facing per-mile charging systems. To address these concerns, Oregon law requires that law enforcement obtain a court order demonstrating probable cause involving an authorized criminal investigation of the vehicle owner to access any location data. Oregon law requires location data to be destroyed 30 days following a payment period, dispute, or noncompliance audit. Private trusted third parties, not government agencies, handle billing transactions and device and service provision.
While not included in the Oregon pilot, one possible charging method for drivers who prefer to not transmit even basic odometer readings for charging purposes could be allowed to prepay a monthly or annual flat fee based on vehicle-miles traveled trends, similar to current vehicle registration fee regimes. Another untested promising application of mileage-based user fee systems is the ability to vary charges by location, time of day, and real-time traffic conditions to enable efficient congestion pricing.
There are numerous ways to approach privacy and mileage-based user fee systems, but we suggest the following five principles should guide any system design in order to protect civil liberties:
- Collect only as much data that is necessary to facilitate transactions;
- Retain data only as long as required to facilitate transactions, audits, and customer disputes;
- A court order based on probable cause in an authorized criminal investigation must be required prior to giving law enforcement access to data;
- Data must be preserved and made available to the defense if data are to be used in a criminal prosecution and shall be retained until the exhaustion of remedies; and
- Criminal liability for data breaches and misuse requires mens rea.
In addition, any examination of the privacy implications of a mileage-based user fee system should consider the following questions:
- Can location-enabled devices allow wireless connectivity for transaction processing while preventing remote access to location and other personally identifiable information?
- Can location data be segregated and stored only on board vehicles?
- What is the relationship between governments and payment processors?
There is growing support in Congress for mileage-based user fees as the long-term solution for Highway Trust Fund revenue. A legislative discussion draft was released in July 2018 contemplating this transition away from motor fuel taxes. Congress should closely examine both all-electronic tolling in the short run and mileage-based user fees in the long run as viable alternatives to status quo motor fuel taxation.
Removing Government Barriers to Transportation Infrastructure Investment. Unfortunately, the aforementioned alternatives to motor fuel taxation are greatly constrained by outdated federal law. Under current law, tolling is generally prohibited on the federally aided highway system. In recent decades, Congress has enacted several exceptions to this rule:
- Section 129 general toll program exemptions. Initially codified to exempt pre-Interstate system toll facilities from the federal prohibition, Congress has gradually expanded Section 129 to include exemptions for:
- Initial construction of highways, bridges or tunnels;
- Initial construction of new lanes on highways bridges and tunnels as long as the number of toll-free lanes is not reduced;
- Reconstruction or replacement of a bridge or tunnel;
- Reconstruction of a non-Interstate highway; and
- Reconstruction, restoration, or rehabilitation of an Interstate highway as long as the number of toll-free lanes is not reduced.
- Section 166 HOV/HOT lane conversion exemptions. Section 166 permits the conversion of high-occupancy vehicle lanes to high-occupancy (HOV) toll lanes. High-occupancy toll (HOT) lanes are defined as high-occupancy vehicle lanes that allow vehicles traveling below the minimum occupancy requirement to use the lanes in exchange for paying a toll.
- Interstate System Reconstruction and Rehabilitation Pilot Program. This pilot program allows three participating projects to impose tolls on existing Interstate lanes. Each of the three projects must be in different states. Section 1411(c) of the FAST Act of 2015 added additional requirements on state legislative authority and a “use it or lose it” three-year time frame for participating states to complete the program’s requirements.
- Value Pricing Pilot Program (VPPP). In 1991, Congress established a congestion pricing program open to up to 15 projects. Since 2012, Congress has authorized no additional funding for the project and the Federal Highway Administration strongly encourages states seeking to impose tolls on federally aided highway segments to seek exemptions under Sections 129 and 166 rather than via VPPP.
These limited exemptions have led to less than 5 percent of U.S. highway miles being tolled. Many highway users, especially the trucking industry, have long opposed toll roads. Road users do have some legitimate concerns that should be addressed if Congress were to eliminate the Section 301 general prohibition on tolls. Transportation policy scholar Robert W. Poole, Jr., has developed a concept he calls “value-added tolling.” He argues that Congress should permit tolling if the projects adhere to five principles:
- Begin tolling only after major improvements are completed;
- Prohibit toll revenue diversion to projects outside the facility or system were they are collected;
- Toll rates should only be high enough to cover initial construction or rehabilitation, maintenance and operations, and needed improvements;
- Motor fuel taxpayers should be reimbursed for the taxes they paid while using toll roads; and
- Provide a better level of service on the facility after tolling is imposed.
Protections from toll road operator predation should accompany any liberalization of federal tolling restrictions. Value-added tolling provides a workable framework. If these statutory restrictions were to be lifted, Congress could unleash another alternative to government spending on transportation infrastructure: private investment.
In countries as varied as Australia, France, China, and Chile, public-private partnerships (P3s) have played major roles in the provision and management of transportation infrastructure. Concession agreements under which the concessionaire designs, builds, finances, operates, and maintains the project over the long term have successfully reduced project costs, shifted costs and risks away from taxpayers and onto private investors and users, and delivered projects in a more timely fashion. In the U.S., several states have enacted robust P3 legislation and have entered into long-term leases with private concessionaires to build, modernize, and/or manage public-purpose tolled highways. This has resulted in road users getting better infrastructure and taxpayers saving billions of dollars.
These P3 toll roads rely on a mix of equity and debt financing. Private activity bonds (PABs) play a key role, with toll revenue used to service this debt. PABs are tax exempt like traditional municipal bonds, leveling the playing field between the public and private sectors in financing infrastructure. Unfortunately, Congress created a national aggregate volume cap on PABs of $15 billion for surface transportation projects. According to the latest data from the U.S. Department of Transportation, more than two-thirds of that $15 billion has already been issued or allocated. If Congress wants to free the states and private sector in delivering better infrastructure value to the traveling public, this cap should be greatly increased or eliminated.
In addition, federal, state, and local procurement policies, labor requirements, environmental permitting rules, and a lack of adequate life-cycle cost accounting all serve to substantially increase the cost of building and maintaining public-purpose infrastructure. Recent efforts from Congress and the administration on permitting reform—especially the ongoing “one federal decision” implementation—are promising, but much more reform is necessary.
Conclusion. If there is an infrastructure crisis in the U.S., it is certainly not uniform across asset classes or geography. Any policy response must take into account these differences in order to effectively target problems where they exist.
Reforms should focus on maximizing returns on infrastructure investment, not maximizing the number of temporary jobs created in the initial construction of new infrastructure. As Harvard University urban economist Edward L. Glaeser recently noted, “Treating transportation infrastructure as yet another public-works program ensures the mediocrity that we see all around us.”
Across this landscape, current federal law perversely reduces surface transportation infrastructure investment while increasing government spending and pressure on taxpayers. The reforms to federal surface transportation policy suggested above could unleash new investment and new practices to contain costs and deliver substantial benefits to infrastructure users without burdening Americans with additional federal taxes.
 Federal Highway Administration, “Highway Statistics 2017,” U.S. Department of Transportation, https://www.fhwa.dot.gov/policyinformation/statistics/2017/.
 Jeff Davis, “Ten Years of Highway Trust Fund Bankruptcy: Why Did It Happen, and What Have We Learned?” Eno Transportation Weekly, September 5, 2018, https://www.enotrans.org/article/ten-years-of-highway-trust-fund-bankruptcy-why-did-it-happen-and-what-have-we-learned/.
 American Society of Civil Engineers, “Rail,” 2017 Infrastructure Report Card, March 2017, https://www.infrastructurereportcard.org/cat-item/rail/; and International Telecommunications Union, “Measuring the Information Society Report 2017,” November 2017, https://www.itu.int/en/ITU-D/Statistics/Pages/publications/mis2017.aspx.
 M. Gregory Fields, Baruch Feigenbaum, and Spence Purnell, “23rd Annual Highway Report on the Performance of State Highway Systems,” Policy Study No. 457, Reason Foundation, February 2018, https://reason.org/wp-content/uploads/2018/01/23rd_annual_highway_report.pdf.
 Bureau of Transportation Statistics, “National Transportation Statistics,” 2018, Tables 1-27 and 1-28, https://www.bts.gov/sites/bts.dot.gov/files/docs/browse-statistical-products-and-data/national-transportation-statistics/223001/ntsentire2018q4.pdf.
 U.S. Department of Transportation, “2015 Status of the Nation’s Highways, Bridges, and Transit: Conditions and Performance, Report to Congress,” December 16, 2016, p. 8-24, https://www.fhwa.dot.gov/policy/2015cpr/pdfs/chap8.pdf.
 David Schrank et al., “2015 Urban Mobility Scorecard,” Texas A&M Transportation Institute and INRIX, August 2015, p. 1, https://static.tti.tamu.edu/tti.tamu.edu/documents/mobility-scorecard-2015-wappx.pdf.
 Ibid., p. 2.
 Jack Wells, “The Role of Transportation in the U.S. Economy,” PowerPoint presentation to the National Surface Transportation Policy and Revenue Commission, June 26, 2006, slide 21, https://web.archive.org/web/20090226032621/http://www.transportationfortomorrow.org/pdfs/commission_meetings/0606_meeting_washington/wells_presentation_0606_meeting.pdf.
 Federal Highway Administration, “Highway Trust Fund and Taxes,” last updated February 8, 2017, https://www.fhwa.dot.gov/fastact/factsheets/htffs.cfm.
 Ron Hagquist, “Higher Gas Efficiency Equals Lower Fuel Revenues,” Public Roads, Vol. 72, No. 3, November 2008, https://www.fhwa.dot.gov/publications/publicroads/08nov/03.cfm.
 Isabel V. Sawhill, “How Higher Gas Prices Hurt Less Affluent Consumers and the Economy,” Brookings Institution, March 6, 2012, https://www.brookings.edu/opinions/how-higher-gas-prices-hurt-less-affluent-consumers-and-the-economy/.
 National Academies of Sciences, Engineering, and Medicine, Renewing the National Commitment to the Interstate Highway System: A Foundation for the Future, Transportation Research Board Special Report 329, 2019, p. 165, https://www.nap.edu/catalog/25334/renewing-the-national-commitment-to-the-interstate-highway-system-a-foundation-for-the-future.
 Congressional Budget Office, “Public Spending on Transportation and Water Infrastructure, 1956 to 2017,” October 2018, https://www.cbo.gov/system/files?file=2018-10/54539-Infrastructure.pdf.
 Ibid. Federal Aviation Administration, “FY 2018 President’s Budget Submission,” Exhibit II-5, p. 4, https://www.transportation.gov/sites/dot.gov/files/docs/mission/budget/281191/faa-fy-2018-cj-final.pdf.
 Congressional Budget Office, “Public Spending on Transportation and Water Infrastructure, 1956 to 2017.”
 U.S. Census Bureau, “2017 American Community Survey 1-Year Estimates,” Table S0802, September 2018, https://factfinder.census.gov/bkmk/table/1.0/en/ACS/17_1YR/S0802.
 Congressional Budget Office, “Public Spending on Transportation and Water Infrastructure, 1956 to 2017.”
 U.S. Constitution, Article I, Section 8, Clause 3.
 Matthew E. Kahn and David M. Levinson, “Fix It First, Expand It Second, Reward It Third: A New Strategy for America’s Highways,” Brookings Institution Hamilton Project Discussion Paper 2011-03, February 2011, https://www.brookings.edu/wp-content/uploads/2016/07/02_highway_infrastructure_kahn_levinson_paper.pdf.
 Testimony of Chad Shirley, Deputy Assistant Director for Microeconomic Studies, before the Committee on Ways and Means of the U.S. House of Representatives, June 17, 2015, p. 3, https://www.cbo.gov/sites/default/files/114th-congress-2015-2016/reports/50298-TransportationTestimony_1.pdf.
 Federal Highway Administration, “Highway Trust Fund and Taxes.”
 Daryl S. Fleming et al., “Dispelling the Myths: Toll and Fuel Tax Collection Costs in the 21st Century,” Reason Foundation Policy Study No. 409, November 2012, pp. 22, 48, https://reason.org/wp-content/uploads/2012/11/dispelling_toll_and_gas_tax_collection_myths.pdf.
 ORS 319.915(3)(a)(G).
 ORS 319.915(4)(a).
 Paul Sorensen et al., “Mileage-Based User Fees for Transportation Funding: A Primer for State and Local Decisionmakers,” RAND Corporation, November 2012, p. 29, https://www.rand.org/content/dam/rand/pubs/tools/TL100/TL104/RAND_TL104.pdf.
 23 U.S.C. § 301.
 23 U.S.C. § 129(a).
 23 U.S.C. § 166(c).
 Fixing America’s Surface Transportation Act, Pub. L. 114-94, 129 Stat. 1313 (2015).
 Federal Highway Administration, “Value Pricing Pilot Program,” FHWA Office of Operations website, accessed March 1, 2019, https://www.fhwa.dot.gov/ipd/tolling_and_pricing/tolling_pricing/vppp.aspx.
 Robert W. Poole, Jr., “Value-Added Tolling: A Better Deal for America’s Highway Users,” Policy Brief 116, Reason Foundation March 2014, https://reason.org/wp-content/uploads/files/value_added_tolling.pdf.
 Robert W. Poole, Jr., Rethinking America’s Highways: A 21st Century Vision for Better Infrastructure, University of Chicago Press, 2018, pp. 52-66.
 Ibid., pp. 96-135.
 Ibid., p. 104.
 26 U.S.C. § 142(m)(2)(A).
 Build America Bureau, “Private Activity Bonds,” U.S. Department of Transportation website, updated February 26, 2019, https://www.transportation.gov/buildamerica/programs-services/pab.
 Bonner R. Cohen, “Fixing America’s Crumbling Underground Water Infrastructure: Competitive Bidding Offers a Way Out,” Issue Analysis 2012 No. 4, Competitive Enterprise Institute April 2012, https://cei.org/issue-analysis/fixing-americas-crumbling-underground-water-infrastructure. Michaela D. Platzer and William J. Mallett, “Effects of Buy America on Transportation Infrastructure and U.S. Manufacturing: Policy Options,” CRS Report R44266, Congressional Research Service, June 14, 2017, pp. 12-15, https://fas.org/sgp/crs/misc/R44266.pdf.
 Daniel P. Kessler and Lawrence F. Katz, “Prevailing Wage Laws and Construction Labor Markets,” Industrial and Labor Relations Review, Vol. 45, No. 2, January 2001, p. 259.
 Federal Highway Administration, “Estimated Time Required to Complete the NEPA Process,” FHWA Environmental Review Toolkit, accessed March 1, 2019, https://www.environment.fhwa.dot.gov/nepa/timeliness_of_nepa.aspx.
 Executive Order 13807 Executive Order 13807 of August 15, 2017, “Establishing Discipline and Accountability in the Environmental Review and Permitting Process for Infrastructure Projects, Federal Register, Vol. 82, No. 163, August 24, 2017, https://www.federalregister.gov/documents/2017/08/24/2017-18134/establishing-discipline-and-accountability-in-the-environmental-review-and-permitting-process-for.
 Edward L. Glaeser, “If You Build It…: Myths and realities about America’s infrastructure spending,” City Journal, Summer 2016, https://www.city-journal.org/html/if-you-build-it-14606.html.