This study examines the impact of state highway construction contracts on state spending efficiency controlling for production structure, service demands, and situational factors. The theoretical argument is that because highway construction projects are relatively large in scale, complex, and can be monitored through objective performance measurement, state highway construction programs may save government production costs through contracts. Contracting helps highway producers achieve efficiency by optimizing production size based on workload and task complexity. The unit of analysis is 48 state governments’ highway construction contracts from 1998 to 2008. Through a two-stage analysis method including a Total Function Productivity (TFP) index and system dynamic panel data analysis, the results suggest that highway construction contracts enhance state highway spending efficiency, especially for large-scale construction projects.

1. Alam, I. M. S. (2001). A Nonparametric Approach for Assessing Productivity Dynamics of Large U.S. Banks. Journal of Money, Credit and Banking, 33(1), 121. https://doi.org/10.2307/2673875
2. Álvarez-Ayuso, I., Delgado-Rodríguez, M. J., & Salinas-Jiménez, M. del M. (2011). Explaining TFP growth in the European Union at the sector level. Journal of Economic Policy Reform, 14(3), 189–199. https://doi.org/10.1080/17487870.2011.570088
3. American Association of State Highway and Transportation Officials. A Guide for Methods and Procedures in Contract Maintenance. American Association of State Highway and Transportation Officials, Washington, D.C., 2002.
4. American Road and Transportation Builders Association. (2015). Transportation Construction Market Intelligence Reports 1996-2015. Available online: https://www.artba.org/market-intelligence/materials-prices/ https://www.artba.org/economics/market-intelligence-reports/ (accessed on 3 May 2024).
5. Aparicio, J., Lovell, C. A. K., & Pastor, J. T. (editors). (2016). Advances in Efficiency and Productivity. Springer International Publishing. https://doi.org/10.1007/978-3-319-48461-7
6. Arellano, M., & Bover, O. (1995). Another look at the instrumental variable estimation of error-components models. Journal of Econometrics, 68(1), 29-51. https://doi.org/10.1016/0304-4076(94)01642-D
7. Ashley, D., Bauman, R., Carroll, J., et al. (1998). Evaluating viability of privatized transportation projects. Journal of Infrastructure Systems, 4(3), 102-110. https://doi.org/10.1061/(ASCE)1076-0342(1998)4:3(102)
8. Balaguer-Coll, M. T., Prior, D., & Tortosa-Ausina, E. (2012). Output complexity, environmental conditions, and the efficiency of municipalities. Journal of Productivity Analysis, 39(3), 303–324. https://doi.org/10.1007/s11123-012-0307-x
9. Bel, G., & Costas, A. (2006). Do Public Sector Reforms Get Rusty? Local Privatization in Spain. The Journal of Policy Reform, 9(1), 1–24. https://doi.org/10.1080/13841280500513084
10. Bel, G., & Fageda, X. (2007). Why do local governments privatise public services? A survey of empirical studies. Local Government Studies, 33(4), 517–534. https://doi.org/10.1080/03003930701417528
11. Bel, G., & Fageda, X. (2017). What have we learned from the last three decades of empirical studies on factors driving local privatisation? Local Government Studies, 43(4), 503–511. https://doi.org/10.1080/03003930.2017.1303486
12. Bel, G., & Mur, M. (2009). Intermunicipal cooperation, privatization and waste management costs: Evidence from rural municipalities. Waste Management, 29(10), 2772–2778. https://doi.org/10.1016/j.wasman.2009.06.002
13. Bjurek, H. (1996). The Malmquist Total Factor Productivity Index. The Scandinavian Journal of Economics, 98(2), 303. https://doi.org/10.2307/3440861
14. Blundell, R., & Bond, S. (1998). Initial Conditions and Moment Restrictions in Dynamic Panel data Model. Journal of Econometrics, 87(1), 115-143. https://doi.org/10.1016/S0304-4076(98)00009-8
15. Bouché, V., & Volden, C. (2011). Privatization and the Diffusion of Innovations. The Journal of Politics, 73(2), 428–442. https://doi.org/10.1017/s0022381611000041
16. Boyne, G. A. (1998). The Determinants of Variations in Local Service Contracting. Urban Affairs Review, 34(1), 150–163. https://doi.org/10.1177/107808749803400107
17. Brown, T. L., & Potoski, M. (2003). Managing contract performance: A transaction costs approach. Journal of Policy Analysis and Management, 22(2), 275–297. Portico. https://doi.org/10.1002/pam.10117
18. Brown, T. L., Potoski, M., & Van Slyke, D. M. (2008). Changing Modes of Service Delivery: How Past Choices Structure Future Choices. Environment and Planning C: Government and Policy, 26(1), 127–143. https://doi.org/10.1068/c0633
19. Cesaroni, G. (2010). A complete FDH efficiency analysis of a diffused production network: the case of the Italian driver and vehicle agency. International Transactions in Operational Research, 18(2), 205–229. https://doi.org/10.1111/j.1475-3995.2010.00791.x
20. Chang, S. (1978). Production function, productivities, and capacity utilization of the Port of Mobile. Maritime Policy & Management, 5(4), 297–305. https://doi.org/10.1080/03088837800000020
21. Dario, C., & Simar, L. (2007). Advanced Robust and Nonparametric Methods In Efficiency Analysis: Methodology and Applications. Springer USA.
22. Deis, D., Watson, E., & Wilmot, C. G. (2002). Designing a Comprehensive Model to Evaluate Outsourcing of Louisiana DOTD Functions and Activities. Louisiana Transportation Research Center.
23. Dilger, R. J., Moffett, R. R., & Struyk, L. (1997). Privatization of Municipal Services in America’s Largest Cities. Public Administration Review, 57(1), 21. https://doi.org/10.2307/976688
24. Donahue, J. D. (1989). The Privatization Decision: Public Ends, Private Means. New York: Basic Books.
25. Eger, R. J. III, Knudson, D., Marlowe, J., & Ogard, L. (2002). Evaluation of Transportation Organization Outsourcing: Decision Making Criteria for Outsourcing Opportunities. Available online: https://scholarlycommons.pacific.edu/esob-facpres/361/ (accessed on 3 May 2024).
26. Elazar, D. J. (1966). American Federalism: A View from the States. Crowell Company.
27. Falah-Fini, S., Triantis, K., & De la Garza, J. M. (2009). Performance Measurement of Highway Maintenance Operation Using Data Envelopment Analysis: Environmental Considerations. In: Proceedings of the 2009 Industrial Engineering Research Conference.
28. Färe, R., Grosskopf, S., & Russell, R. R. (editors). (1998). Index Numbers: Essays in Honour of Sten Malmquist. Springer Netherlands. https://doi.org/10.1007/978-94-011-4858-0
29. Federal Highway Administration (2017). Highway Statistics Series. Available online: https://www.fhwa.dot.gov/policyinformation/statistics.cfm (accessed on 25 October 2017).
30. Fernandez, S., Ryu, J. E., & Brudney, J. L. (2008). Exploring Variations in Contracting for Services Among American Local Governments. The American Review of Public Administration, 38(4), 439–462. https://doi.org/10.1177/0275074007311386
31. Førsund, F.R. (2016). Productivity Interpretations of the Farrell Efficiency Measures and the Malmquist Index and Its Decomposition. In: Aparicio, J., Lovell, C., Pastor, J. (eds) Advances in Efficiency and Productivity. International Series in Operations Research & Management Science, vol 249. Springer, Cham. https://doi.org/10.1007/978-3-319-48461-7_6
32. Garcia-Mila, T., & McGuire, T. J. (1992). The contribution of publicly provided inputs to states’ economies. Regional Science and Urban Economics, 22(2), 229-241. https://doi.org/10.1016/0166-0462(92)90013-Q
33. Geys, B., & Sørensen, R. J. (2016). Revenue scarcity and government outsourcing: empirical evidence from Norwegian local governments. Public Administration, 94(3), 769–788. Portico. https://doi.org/10.1111/padm.12262
34. Grandy, C. (2009). The “Efficient” Public Administrator: Pareto and a Well‐Rounded Approach to Public Administration. Public Administration Review, 69(6), 1115–1123. Portico. https://doi.org/10.1111/j.1540-6210.2009.02069.x
35. Greene, J. D. (2002). Cities and privatization: Prospects for the new century. Prentice Hall, Upper Saddle River, N.J.
36. Grosskopf, S. (2003). Some Remarks on Productivity and its Decompositions. Journal of Productivity Analysis, 20(3), 459-474.
37. Hancher, D. E., & Werkmeister, R. F. (2001). Managing Change in State Departments of Transportation: Scan 2 of 8: Innovations in Private Involvement in Project Delivery. Available online: https://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w39-2.pdf (accessed on 3 May 2024).
38. Hancher, D. E., Brenneman, A., Meagher, R., & Goodrum, P. (2006). Outsourcing Transportation Project Delivery Functions: An Alternative Method for Getting the Job Done in Kentucky and Other States. TR News, 247. https://doi.org/10.1023/A:1027364119672
39. Hartgen, D. T., & Fields, G. M. (2016). 22nd Annual Highway report: The Performance of State Highway Systems. Available online: https://reason.org/wp-content/uploads/2016/05/2016-highway-report.pdf (accessed on 3 May 2024).
40. Hebdon, R., & Jalette, P. (2008). The Restructuring of Municipal Services: A Canada—United States Comparison. Environment and Planning C: Government and Policy, 26(1), 144–158. https://doi.org/10.1068/c0634
41. Hefetz, A. (2004). Privatization and Its Reverse: Explaining the Dynamics of the Government Contracting Process. Journal of Public Administration Research and Theory, 14(2), 171–190. https://doi.org/10.1093/jopart/muh012
42. Hefetz, A., & Warner, M. (2007). Beyond the market versus planning dichotomy: Understanding privatisation and its reverse in US cities. Local Government Studies, 33(4), 555–572. https://doi.org/10.1080/03003930701417585
43. Hefetz, A., & Warner, M. E. (2011). Contracting or Public Delivery? The Importance of Service, Market, and Management Characteristics. Journal of Public Administration Research and Theory, 22(2), 289–317. https://doi.org/10.1093/jopart/mur006
44. Hefetz, A., Warner, M. E., & Vigoda-Gadot, E. (2012). Privatization and Intermunicipal Contracting: The US Local Government Experience 1992–2007. Environment and Planning C: Government and Policy, 30(4), 675–692. https://doi.org/10.1068/c11166
45. Hefetz, A., Warner, M., & Vigoda-Gadot, E. (2014). Professional Management and Local Government Service Delivery: Strategic Decisions Across Alternative Markets. Public Performance & Management Review, 38(2), 261–283. https://doi.org/10.1080/15309576.2015.983829
46. Henig, J. R. (1989). Privatization in the United States: Theory and Practice. Political Science Quarterly, 104(4), 649–670. https://doi.org/10.2307/2151103
47. Hoffman, L. (2016). Longitudinal Analysis: Modeling Within-Person Fluctuation and Change. New York: Routledge.
48. Inmaculada, A., Rodriguez, M., & Jiminez, M. (2011). Explaining TFP Growth in the European Union at Sector Level. Journal of Economic Policy Reform, 14(3), 189-199. DOI:10.1080/17487870.2011.570088
49. Jara-Díaz, S. R., Martínez-Budría, E., Cortés, C. E., & Basso, L. (2002). A Multi-output cost function for the services of Spanish ports’ infrastructure. Transportation, 29(4), 419-437. https://doi.org/10.1023/A:1016386131712
50. Kelman, S. J. (2002). Contracting. In: Salamon, L. M. (editor). The tools of government: A guide to the new governance. Oxford: Oxford University Press, pp. 282-318.
51. Kettl, D. (1993). Sharing Power: Public Governance and Private Markets. Washington, D.C.: Brookings Institute.
52. Kim, M., & Sachish, A. (1986). The Structure of Production, Technical Change and Productivity in a Port. The Journal of Industrial Economics, 35(2), 209. https://doi.org/10.2307/2098359
53. Kodrzycki, Y. K. (1994). Privatization of local public services: Lessons for New England. New England Economic Review, 31-46.
54. Kurmapu, D. (2012). Methodology to Measure and Improve U.S. States Highway Sustainability Using Data Envelopment Analysis and Self Organizing Maps [Master’s thesis]. Ohio University, Athens. Unpublished work.
55. Levin, J., & Tadelis, S. (2010). Contracting for government services: theory and evidence from U.S. cities*. The Journal of Industrial Economics, 58(3), 507–541. Portico. https://doi.org/10.1111/j.1467-6451.2010.00430.x
56. Lobo, J., & Rantisi, N. M. (1999). Investment in Infrastructure as Determinant of Metropolitan Productivity. Growth and Change, 30(1), 106–127. Portico. https://doi.org/10.1111/0017-4815.00106
57. Megginson, W. L., & Netter, J. M. (2001). From State to Market: A Survey of Empirical Studies on Privatization. Journal of Economic Literature, 39(2), 321–389. https://doi.org/10.1257/jel.39.2.321
58. Milward, H. B., & Provan, K. G. (2000). Governing the Hollow State. Journal of Public Administration Research and Theory, 10(2), 359–380. https://doi.org/10.1093/oxfordjournals.jpart.a024273
59. Morgan, D. R., & England, R. E. (1988). The Two Faces of Privatization. Public Administration Review, 48(6), 979. https://doi.org/10.2307/976994
60. Morgan, D. R., Hirlinger, M. W., & England, R. E. (1988). The Decision To Contract Out City Services: a Further Explanation. Western Political Quarterly, 41(2), 363–372. https://doi.org/10.1177/106591298804100209
61. Müller, J. (2008). Efficiency vectors, efficiency and performance measures: new methods for ranking efficient organizational units. Journal of Productivity Analysis, 30(2), 99–106. https://doi.org/10.1007/s11123-008-0106-6
62. National Association of State Budget Officers-NASBO. (2008). Budget Process in the States. Available online: http://www.nasbo.org/reports-data/budget-processes-in-the-states (accessed on 3 May 2024).
63. National Association of State Budget Officers-NASBO. (2023). State Expenditure Report. Available online: https://www.nasbo.org/reports-data/state-expenditure-report (accessed on 3 May 2024).
64. Nelson, A. C., & Foster, K. A. (1999). Metropolitan Governance Structure and Income Growth. Journal of Urban Affairs, 21(3), 309–324. https://doi.org/10.1111/0735-2166.00019
65. Olberding, D. (1995). Toward Determining Minimal/Optimal Transportation Department Resource Requirements: An Examination of State Privatization Trends Among Selected States. Available online: https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1852&context=ktc_researchreports (accessed on 3 May 2024).
66. Osborne, D., & Gaebler, T. (1992). Reinventing government: How the entrepreneurial spirit is transforming the public sector. New York: Addison-Wesley.
67. Owen, R. G. (1998). Meeting the Outsource Challenge: Competing for Equipment Maintenance Services. Available online: https://onlinepubs.trb.org/onlinepubs/circulars/ec013/4COwen.pdf (accessed on 3 May 2024).
68. Pérez-López, G., Prior, D., Zafra-Gómez, J. L., et al. (2016). Cost efficiency in municipal solid waste service delivery. Alternative management forms in relation to local population size. European Journal of Operational Research, 255(2), 583–592. https://doi.org/10.1016/j.ejor.2016.05.034
69. Poister, T. H. (1982). Developing Performance Indicators for the Pennsylvania Department of Transportation. Public Productivity Review, 6(1/2), 51. https://doi.org/10.2307/3380402
70. Poister, T. H. (2010). The Future of Strategic Planning in the Public Sector: Linking Strategic Management and Performance. Public Administration Review, 70(s1). Portico. https://doi.org/10.1111/j.1540-6210.2010.02284.x
71. Puentes, R., & Prince, R. (2003). Fueling transportation finance: A primer on the gas tax. Brookings Institution Report, Washington, D.C.
72. Radin, B. (2006). Challenging the performance movement: Accountability, complexity, and democratic values. Georgetown University Press.
73. Rall, J. (2010). Public Private Partnerships for Transportation: A Toolkit for Legislators. National Conference of State Legislatures.
74. Rall, J., Wheet, A., Farber, N. J., & Reed, J. B. (2011). Transportation governance and finance: A 50-state review of state legislatures and departments of transportation. Available online: https://trid.trb.org/View/2035087 (accessed on 3 May 2024).
75. Ribreau, N. (2004). Highway Maintenance Outsourcing Experience: Synopsis of Washington State Department of Transportation’s Review. Transportation Research Record: Journal of the Transportation Research Board, 1877(1), 3–9. https://doi.org/10.3141/1877-01
76. Ruggiero, J., Duncombe, W., & Miner, J. (1995). On the measurement and causes of technical inefficiency in local public services: With an application to public education. Journal of Public Administration Research and Theory, 5(4), 403-428.
77. Saad, L. (2018). Conservative-leaning States Drop from 44 to 39. Available online: https://news.gallup.com/poll/226730/conservative-leaning-states-drop.aspx (accessed on 24 June 2024).
78. Sachish, A. (1996). Productivity functions as a managerial tool in Israeli ports. Maritime Policy & Management, 23(4), 341–369. https://doi.org/10.1080/03088839600000094
79. Savas, E. S. (2000). Privatization and Public-Private Partnerships. New York: Seven Bridges Press.
80. Science Applications International Corporation. (2003). Outsourcing of State DOT Capital Delivery Functions. Available online: https://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w59.pdf (accessed on 3 May 2024).
81. Segal, G. F., Moore, A. T., & McCarthy, S. (2003). Contracting for road and highway maintenance. The Reason Foundation Report, Washington, D.C.
82. Sherman, H. D., & Zhu, J. (2006). Service Productivity Management. Springer US. https://doi.org/10.1007/0-387-33231-6
83. Shetterly, D. R. (2000). The Influence of Contract Design on Contractor Performance: The Case of Residential Refuse Collection. Public Performance & Management Review, 24(1), 53. https://doi.org/10.2307/3381076
84. Smirnova, O. V., & Leland, S. M. (2014). Public Transportation and Contracting Out. Public Works Management & Policy, 19(4), 358–364. https://doi.org/10.1177/1087724x14545541
85. Smirnova, O., Yusuf, J.-E., & Leland, S. (2016). Managing for performance: Measurement and monitoring of contracts in the transit industry. Journal of Public Procurement, 16(2), 208–242. https://doi.org/10.1108/jopp-16-02-2016-b003
86. Stein, K., & Sloane, R. (2001). Managing Change in State Departments of Transportation. Available online: https://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w39-4.pdf (accessed on 3 May 2024).
87. Stock, J. H., & Watson, M. W. (2001). Vector Autoregressions. Journal of Economic Perspectives, 15(4), 101–115. https://doi.org/10.1257/jep.15.4.101
88. Terry, L. D. (2005). The Thinning of Administrative Institutions in the Hollow State. Administration & Society, 37(4), 426–444. https://doi.org/10.1177/0095399705277136
89. Tongzon, J. L. (1995). Determinants of port performance and efficiency. Transportation Research A, 29(3), 245-252. https://doi.org/10.1016/0965-8564(94)00032-6
90. Turner, H., Windle, R., & Dresner, M. (2004). North American containerport productivity: 1984–1997. Transportation Research Part E: Logistics and Transportation Review, 40(4), 339–356. https://doi.org/10.1016/j.tre.2003.06.001
91. Warne, T. R. (2003). State DOT outsourcing and private-sector utilization. Available online: https://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_syn_313.pdf (accessed on 3 May 2024).
92. Warner, M. E., & Hefetz, A. (2012). Insourcing and Outsourcing. Journal of the American Planning Association, 78(3), 313–327. https://doi.org/10.1080/01944363.2012.715552
93. Warner, M., & Hefetz, A. (2003). Rural—Urban Differences in Privatization: Limits to the Competitive State. Environment and Planning C: Government and Policy, 21(5), 703–718. https://doi.org/10.1068/c008r
94. Wei, W., Zhang, Z., & Yang, K. (2022). Local institutions and public service outsourcing: Managerial professionalism, mayoral strength, and electoral rules. Public Administration Review, 82(6), 1095–1123. Portico. https://doi.org/10.1111/puar.13525
95. Wholey, J. S. (1999). Performance-Based Management: Responding to the Challenges. Public Productivity & Management Review, 22(3), 288. https://doi.org/10.2307/3380705
96. Williamson, O. E. (1991). Comparative Economic Organization: The Analysis of Discrete Structural Alternatives. Administrative Science Quarterly, 36(2), 269. https://doi.org/10.2307/2393356
97. Witherford, D. K. (1997). Outsourcing of state highway facilities and services. Washington, D.C.: National Academy Press.
98. Yusuf, J.-E., & O’Connell, L. (2013). Outsourcing Expert Services by State Transportation Departments. The American Review of Public Administration, 44(4), 477–492. https://doi.org/10.1177/0275074012469460
99. Yusuf, W., Wallace, C., & Hackbart, M. (2006). Privatizing Transportation through Public-Private Partnerships: Definitions, Models, and Issues. Available online: https://rosap.ntl.bts.gov/view/dot/21647 (accessed on 3 May 2024).
100. Zambrano, F., Finklea, D., Chang, S. H., et al. (1998). Funding and Personnel Allocation Methods Used by a State Transportation Agency. Available online: https://ntlrepository.blob.core.windows.net/lib/21000/21800/21851/PB99145096.pdf (accessed on 3 May 2024).
101. Zhang, Z., Gibson, B., & Schafer, J. G. (2017). Reexamining the Relationship Between Fiscal Stress and Outsourcing. Public Performance & Management Review, 41(1), 22–46. https://doi.org/10.1080/15309576.2017.1358645