The federal-aid highway program is financed through motor fuel taxes and other levies on highway users. Federal aid for highways is provided largely on a cash basis from the Highway Trust Fund. States have financed roads primarily through a combination of state revenues and federal aid. Typically, states raise their share of the funds by taxing motor fuels and charging user fees. In addition, debt financing--issuing bonds to pay for highway development and construction-- represents about 10 percent of total state funding for highways, although some states make greater use of borrowing than others. Federal-aid highway funding to states is typically in the form of grants. These grants are distributed from the Highway Trust Fund and apportioned to states based on a series of funding formulas. Funding is subject to grant-matching rules--for most federally funded highway projects, an 80-percent federal and 20-percent state funding ratio. States are subject to pay-as-you-go rules where they obligate all of the funds needed for a project up front and are reimbursed for project costs as they are incurred. In the mid-1990s, FHWA and the states tested and evaluated a variety of innovative financing techniques and strategies. Many financing innovations were approved for use through administrative action or legislative changes under NHS and TEA-21. Three of the techniques approved were SIBs, GARVEEs, and TIFIA loans. SIBs are state revolving loan funds that make loans or loan guarantees to approved projects; the loans are subsequently repaid, and recycled back into the revolving fund for additional loans. GARVEEs are any state issued bond or note repayable with future federal-aid highway funds. Through the issuance of GARVEE bonds, projects are able to meet the need for up-front capital as well as use future federal highway dollars for debt service. TIFIA allows FHWA to provide credit assistance, up to 33 percent of eligible project costs, to sponsors of major transportation projects. Credit assistance can take the form of a loan, loan guarantee, or line of credit. See appendix II for additional information about these financing techniques. According to FHWA, the goals of its Innovative Finance Program are to accelerate projects by reducing inefficient and unnecessary constraints on states' management of federal highway funds; expand investment by removing barriers to private investment; encourage the introduction of new revenue streams, particularly for the purpose of retiring debt obligations; and reduce financing and related costs, thus freeing up the savings for investments into the transportation system itself. When Congress established the TIFIA program in TEA-21, it set out goals for the program to offer sponsors of large transportation projects a new tool to leverage limited Federal resources, stimulate additional investment in our nation's infrastructure, and encourage greater private sector participation in meeting our transportation needs. Over the last 8 years, many states have used one or more of the FHWA- sponsored alternative financing tools to fund their highway and transit infrastructure projects. As of June 2002: 32 states (including the Commonwealth of Puerto Rico) have established SIBs and have entered into 294 loan agreements with a dollar value of about $4.06 billion; 9 states (including the District of Columbia and Commonwealth of Puerto Rico) have entered into TIFIA credit assistance agreements for 11 projects, representing $15.4 billion in transportation investment; and 6 states have issued GARVEE bonds with face amounts totaling $2.3 billion. These mechanisms have given states additional options to accelerate the construction of projects and leverage federal assistance. It has also provided them with greater flexibility and more funding techniques. States' use of innovative financing techniques has resulted in projects being constructed more quickly than they would be under traditional pay- as-you-go financing. This is because techniques such as SIBs can provide loans to fill a funding gap, which allows the project to move ahead. For example, using a $25 million SIB loan for land acquisition in the initial phase of the Miami Intermodal Center, Florida accelerated the project by 2 years, according to FHWA. Similarly, South Carolina used an array of innovative finance tools when it undertook its "27 in7 program"--a plan to accomplish infrastructure investment projects that were expected to take 27 years and reduce that to just 7 years. Officials in the states that we contacted that were using FHWA innovative finance tools noted that project acceleration was one of the main reasons for using them. Innovative finance--in particular the TIFIA program--can leverage federal funds by attracting additional nonfederal investments in infrastructure projects. For example, the TIFIA program funds a lower share of eligible project costs than traditional federal-aid programs, thus requiring a larger investment by other, non-federal funding sources. It also attracts private creditors by assuming a lower priority on revenues pledged to repay debt. Bond rating companies told us they view TIFIA as "quasi-equity" because the federal loan is subordinate to all other debt in terms of repayments and offers debt service grace periods, low interest costs, and flexible repayment terms. It is often difficult to measure precisely the leveraging effect of the federal investment. As a recent FHWA evaluation report noted, just comparing the cost of the federal subsidy with the size of the overall investment can overstate the federal influence--the key issue being whether the projects assisted were sufficiently credit-worthy even without federal assistance and the federal impact was to primarily lower the cost of the capital for the project sponsor. However, TIFIA's features, taken together, can enhance senior project debt ratings and thus make the project more attractive to investors. For example, the $3.2 billion Central Texas Turnpike project--a toll road to serve the Austin-San Antonio corridor--received a $917 million TIFIA loan and will use future toll revenues to repay debt on the project, including revenue bonds issued by the Texas Transportation Commission and the TIFIA loan. According to public finance analysts from two ratings firms, the project leaders were able to offset potential concerns about the uncertain toll road revenue stream by bringing the TIFIA loan to the project's financing. FHWA's innovative finance techniques provide states with greater flexibility when deciding how to put together project financing. By having access to various alternatives, states can finance large transportation projects that they may not have been able to build with pay-as-you-go financing. For example, faced with the challenge of Interstate highway needs of over $1.0 billion, the state of Arkansas determined that GARVEE bonds would make up for the lack of available funding. In June 1999, Arkansas voters approved the issuance of $575 million in GARVEE bonds to help finance this reconstruction on an accelerated schedule. The state will use future federal funds, together with the required state matching funds and the proceeds from a diesel fuel tax increase, to retire the bonds. The GARVEE bonds allow Arkansas to rebuild approximately 380 miles, or 60 percent of its total Interstate miles, within 5 years. Although FHWA's innovative financing tools have provided states with additional options for meeting their needs, a number of factors can limit the use of these tools. State DOTs are not always willing to use federal innovative financing tools, nor do they always see advantages to using them. For example, officials in two states indicated that they had a philosophy against committing their federal aid funding to debt service. Moreover, not all states see advantages to using FHWA innovative financing tools. For example, one official indicated that his state did not have a need to accelerate projects because the state has only a few relatively small urban areas and thus does not face the congestion problems that would warrant using innovative financing tools more often. Officials in another state noted that because their DOT has the authority to issue tax-exempt bonds as long as the state has a revenue stream to repay the debt, they could obtain financing on their own and at lower cost. Not all state DOTs have the authority to use certain financing mechanisms, and others have limitations on the extent to which they can issue debt. For example, California requires voter approval in order to use its allocations from the Highway Trust Fund to pay for debt servicing costs. In Texas, the state constitution prohibits using highway funds to pay the state's debt service. Other states limit the amount of debt that can be incurred. For example, Montana has a debt ceiling of $150 million and is now paying off bonds issued in the late 1970s and early 1980s and plans to issue a GARVEE bond in the next few years. Some financing tools have limitations set in law. For example, five states are currently authorized to use TEA-21 federal-aid funding to capitalize their SIBs. Although other states have created SIBs and use them, they could not use their TEA-21 federal-aid funding to capitalize them. Similarly, TIFIA credit assistance can be used only for certain projects. TIFIA's requirement that, in general, projects cost at least $100 million restricts its use to large projects. We assessed the costs that federal, state and local governments (or special purpose entities they create) would incur to finance $10 billion in infrastructure investment using four current and newly proposed financing mechanisms for meeting infrastructure investment needs. To date, most federal funding for highways and transit projects has come through the federal-aid highway grants--appropriated by Congress from the Highway Trust Fund. Through the TIFIA program, the federal government also provides subsidized loans for state highway and transit projects. In addition, the federal government also subsidizes state and local bond financing of highways by exempting the interest paid on those bonds from federal income tax. Another type of tax preference--tax credit bonds-- has been used, to a very limited extent, to finance certain school investments. Investors in tax credit bonds receive a tax credit against their federal income taxes instead of interest payments from the bond issuer. Proposals have been made to extend the use of this relatively new financing mechanism to other public investments, including transportation projects. The use of these four mechanisms to finance $10 billion in infrastructure investment result in differences in (1) total costs--and how much of the cost is incurred within the short term 5-year period and how much of it is postponed to the future; (2) sharing costs--or the extent to which states must spend their own money, or obtain private investment, in order to receive the federal subsidy; and (3) risks--which level of government bears the risk associated with an investment (or compensates others for taking the risk). As a result of these differences, for any given amount of highway investment, combined and federal government budget costs will vary, depending on which financing mechanism is used. Total costs--and how much of the cost is incurred within the short term 5- year period and how much of it is postponed to the future--differ under each of the four mechanisms. As figure 1 shows, grant funds are the lowest-cost method to finance a given amount of investment expenditure, $10 billion. The reason for this result is that it is the only alternative that does not involve borrowing from the private sector through the issuance of bonds. Bonds are more expensive than grants because the governments have to compensate private investors for the risks that they assume (in addition to paying them back the present value of the bond principal). However, because the grants alternative does not involve borrowing, all of the public spending on the project must be made up front. The TIFIA direct loan, tax credit bond, and tax-exempt loan alternatives involve increased amounts of borrowing from the private sector and, therefore, increased overall costs. Grants entail the highest short term costs as these costs, in our example, are all incurred on a pay-as-you-go basis. The tax-exempt bond alternative, which involves the most borrowing and has the highest combined costs, also requires the least amount of public money up front. There are significant differences across the four alternatives in the cost sharing between federal and state governments. (See fig. 2). Federal costs would be highest under the tax credit bond alternative, under which the federal government pays the equivalent of 30 years of interest on the bonds. Grants are the next most costly alternative for the federal government. Federal costs for the tax-exempt bond and TIFIA loan alternatives are significantly lower than for tax credit bonds and grants. In some past and current proposals for using tax credit bonds to finance transportation investments, the issuers of the bonds would be allowed to place the proceeds from the sales of some bonds into a "sinking fund" and, thereby, earn investment income that could be used to redeem bond principal. This added feature would reduce (or eliminate) the costs of the bond financing to the issuers, but this would come at a significant additional cost to the federal government. For example, in our example where states issue $8 billion of tax credit bonds to finance highway projects, if the states were allowed to issue an additional $ 2.4 billion of bonds to start a sinking fund, they would be able to earn enough investment income to pay back all of the bonds without raising any of their own money. However, this added benefit for the states could increase costs to the federal government by about 30 percent--an additional $2.7 billion (in present value), raising the total federal cost to $11.7 billion. In some cases private investors participate in highway projects, either by purchasing "nonrecourse" state bonds that will be repaid out of project revenues (such as tolls) or by making equity investments in exchange for a share of future toll revenues. By making these investments the investors are taking the risk that project revenues will be sufficient to pay back their principal, plus an adequate return on their investment. In the case where the nonrecourse bond is a tax-exempt bond, the state must pay an interest rate that provides an adequate after-tax rate of return, including compensation for the risk assumed by the investors. By exempting this interest payment from income tax, the federal government is effectively sharing the cost of compensating investors for risk. Nevertheless, the state still bears some of the risk-related cost and, therefore has an incentive to either select investment projects that have lower risks, or select riskier projects only if the expected benefits from those projects are large enough to warrant taking on the additional risk. In the case of a tax credit bond where project revenues would be the only source of financing to redeem the bonds and the federal government would be committed to paying whatever rate of credit investors would demand to purchase bonds at par value, the federal government would bear all of the cost of compensating the investors for risk. States would no longer have a financial incentive to balance higher project risks with higher expected project benefits. Alternatively, the credit rate could be set equal to the interest rate that would be required to sell the average state bonds (issued within the same timeframe) at par value. In that case, states would bear the additional cost of selling bonds for projects with above- average risks. In the case of a TIFIA loan for a project that has private sector participation, the federal loan does not compensate the private investors for their risk; instead, the federal government assumes some of the risk and, thereby, lowers the risk to the private investors and lowers the amount that states have to pay to compensate for that risk. In summary, Mr. Chairman, alternative financing mechanisms have accelerated the pace of some surface transportation infrastructure improvement projects and provided states additional tools and flexibility to meet their needs--goals of FHWA's Innovative Finance Program. FHWA and the states have made progress to attain the goal Congress set for the TIFIA program--to stimulate additional investment and encourage greater private sector participation--but measuring success involves measuring the leverage effect of the federal investment, which is often difficult. Our work raises a number of issues concerning the potential costs and benefits of expanding alternative financing mechanisms to meet our nation's surface transportation needs. Congress likely will weigh these potential costs and benefits as it considers reauthorizing TEA-21. Expanding the use of alternative financing mechanisms has the potential to stimulate additional investment and private participation. But expanding investment in our nation's highways and transit systems raises basic questions of who pays, how much, and when. How alternative financing mechanisms are structured determines how much of the needs are met through federal funding and how much are met by the states and others. The structure of these mechanisms also determines how much of the cost of meeting our current needs are met by current users and taxpayers versus future users and taxpayers. While alternative finance mechanisms can leverage federal investments, they are, in the final analysis, different forms of debt financing. This debt ultimately must be repaid, with interest, either by highway users--through tolls, fuel taxes, or licensing and vehicle fees--or by the general population through increases in general fund taxes or reductions in other government services. Proposals for tax credit bonds would shift the costs of highway investments away from the traditional user-financed sources, unless revenues from the Highway Trust Fund are specifically earmarked to pay for these tax credits. Mr. Chairman this concludes my prepared statement. I would be pleased to answer any questions you or other members of the Committees have. For further information on this testimony, please contact JayEtta Z. Hecker (heckerj@gao.gov) or Steve Cohen (cohens@gao.gov). Alternatively, they may be reached on (202) 512-2834. Individuals making key contributions to this testimony include Lynn Filla-Clark, Jennifer Gravelle, Gail Marnik, Jose Oyola, Eric Tempelis, Stacey Thompson, and Jim Wozny. We estimated the costs that the federal, state or local governments (or special purpose entities they create) would incur if they financed $10 billion in infrastructure investment using each of four alternative financing mechanisms: grants, tax credit bonds, tax-exempt bonds, and direct federal loans. The following subsections explain our cost computations for each alternative. We converted all of our results into present value terms, so that the value of the dollars spent in the future are adjusted to make them comparable to dollars spent today. This adjustment is particularly important when comparing the costs of bond repayment that occur 30 years from now with the costs of grants that occur immediately. We estimated the cost to the federal and state governments of traditional grants with a state match. We assume the state was responsible for 20% of the investment expenditures. We then found the percentage of federal grants such that the federal grant plus the state match totaled $10 billion. This form of matching resulted in the state being responsible for $2 billion of the spending and the federal government being responsible for $8 billion. We estimated the cost to the federal and state governments of issuing $8 billion in tax credit bonds with a state match of $2 billion. The cost to the federal government equals the amount of tax credits that would be paid out over a given loan term. We estimated the amount of credit payment in a given year by multiplying the amount of outstanding bonds in a given year by the credit rate. We assumed that the credit rate would be approximately equal to the interest rates on municipal bonds of comparable maturity, grossed up by the marginal tax rate of bond purchasers. For the results presented in figures 1 and 2 we assumed that the bonds would have a 30-year term and would have a credit rating between Aaa and Baa. The cost to the issuing states would consist of the repayment of bond principal in future years, plus the upfront cost of $2 billion in state appropriations for the matching contribution. The cost of tax-exempt bonds to the state or local government (or special purpose entity) issuers would consist of the interest payments on the bonds and the repayment of bond principal. The cost to the federal government would equal the taxes forgone on the income that bond purchasers would have earned form the investments they would have made if the tax-exempt bonds were not available for purchase. For the results presented in figures 1 and 2 we made the same assumptions regarding the terms and credit rating of the bonds as we did for the tax credit bond alternative. We computed the cost of interest payments by the state by multiplying the amount of outstanding bonds by the current interest rate for municipal bonds with the same term and credit rating. We assumed that the pretax rate of return that bond purchasers would have earned on alternative investments would have been equal to the municipal bond rate divided by one minus the investors' average marginal tax rate. Consequently, the federal revenue loss was equal to that pretax rate of return, multiplied by the amount of tax-exempt bonds outstanding each year (in this example), and then multiplied by the investors' average marginal tax rate. In order to have our direct loan example reflect the financing packages typical of current TIFIA projects, we used data from FHWA's June 2002 Report to Congress to determine what shares of total project expenditures were financed by TIFIA direct loans, federal grants, bonds issued by state or local governments or by special purpose entities, private investment, and other sources. We assumed that the $10 billion of expenditures in our example was financed by these various sources in roughly the same proportions as they are used, on average, in current TIFIA projects. We estimated the federal and nonfederal costs of the grants and bond financing components in the same manner as we did for the grants and tax-exempt bond examples above. To compute the federal cost of the direct loan component, we multiplied the dollar amount of the direct loan in our example by the average amount of federal subsidy per dollar of TIFIA loans, as reported in the TIFIA report. In the results presented in figure 1, this portion of the federal cost amounted to $130 million. The nonfederal costs of the loan component consist of the loan repayments and interest payments to the federal government. We assumed that the term of the loan was 30 years and that the interest rate was set equal to the federal cost of funds, which is TIFIA's policy. The private investment (other than through bonds), which accounted for less than one percent of the spending, and the "other" sources, which accounted for about three percent of the spending, were treated as money spend immediately on the project. A number of factors--including general interest rate levels, the terms of the bonds or loans, the individual risks of the projects being financed-- affect the relative costs of the various alternatives. For this reason, we examined multiple scenarios for each alternative. In particular, current interest rates are relatively low by historical standards. In our alternative scenarios we used higher interest rates, typical of those in the early 1990s. At higher interest rates, the combined costs of the alternatives that involve bond financing would be higher, while the costs of grants would remain the same. If we had used bonds with 20-year terms, instead of 30-year terms in the examples, the costs of the three alternatives that involve bond financing would be lower, but they would still be greater than the costs of grants. One of the earliest techniques tested to fund transportation infrastructure was revolving loan funds. Prior to 1995, Federal law did not permit states to allocate federal highway funds to capitalize revolving loan funds. However, in the early 1990s, transportation officials began to explore the possibility of adding revolving loan fund capitalization to the list of eligible uses for certain federal transportation funds. Under such a proposal, federal funding is used to "capitalize" or provide seed money for the revolving fund. Then money from the revolving fund would be loaned out to projects, repaid, and recycled back into the revolving fund, and subsequently reinvested in the transportation system through additional loans. In 1995, the federally capitalized transportation revolving loan fund concept took shape as the State Infrastructure Bank (SIB) pilot program, authorized under Section 350 of the NHS Act. This pilot program was originally available only to a maximum of 10 states, but then was expanded under the 1997 U.S. DOT Appropriations Act, which appropriated $150 million in federal general funds for SIB capitalization. TEA-21 established a new SIB pilot program, but limited participation to four states--California, Florida, Missouri, and Rhode Island. Texas subsequently obtained authorization under TEA-21. These states may enter into cooperative agreements with the U.S. DOT to capitalize their banks with federal-aid funds authorized in TEA-21 for fiscal years 1998 through 2003. Of the states currently authorized, only Florida and Missouri have capitalized their SIBs with TEA-21 funds. As part of TEA-21, Congress authorized the Transportation Infrastructure Finance and Innovation Act of 1998 (TIFIA) to provide credit assistance, in the form of direct loans, loan guarantees, and standby lines of credit to projects of national significance. The TIFIA legislation authorized $10.6 billion in credit assistance and $530 million in subsidy cost to cover the expected long-term cost to the government for providing credit assistance. TIFIA credit assistance is available to highway, transit, passenger rail and multi-modal project, as well as projects involving installation of intelligent transportation systems (ITS). The TIFIA statute sets forth a number of prerequisites for participation in the TIFIA program. The project costs must be reasonably expected to total at least $100 million, or alternatively, at least 50 percent of the state's annual apportionment of federal-aid highway funds, whichever is less. For projects involving ITS, eligible project costs must be expected to total at least $30 million. Projects must be listed on the state's transportation improvement program, have a dedicated revenue source for repayment, and must receive an investment grade rating for their senior debt. Finally, TIFIA assistance cannot exceed 33 percent of the project costs and the final maturity date of any TIFIA credit assistance cannot exceed 35 years after the project's substantial completion date.

Summary:
As Congress considers reauthorizing the Transportation Equity Act for the 21st Century (TEA-21) in 2003, it does so in the face of a continuing need for the nation to invest in its surface transportation infrastructure at a time when both the federal and state governments are experiencing severe financial constraints. As transportation needs have grown, Congress provided states--in the National Highway System Designation Act of 1995 and TEA-21--additional means to make highway investments through alternative financing mechanisms. A number of states are using existing alternative financing tools such as State Infrastructure Banks, Grant Anticipation Revenue Vehicles bonds, and loans under the Transportation Infrastructure Finance and Innovation Act. These tools can provide states with additional options to accelerate projects and leverage federal assistance--they can also provide greater flexibility and more funding techniques. Federal funding of surface transportation investments includes federal-aid highway program grant funding appropriated by Congress out of the Highway Trust Fund, loans and loan guarantees, and bonds that are issued by states that are exempt from federal taxation. Expanding the use of alternative financing mechanisms has the potential to stimulate additional investment and private participation. However, expanding investment in the nation's highways and transit systems raises basic questions of who pays, how much, and when.