Bridge Load Testing: State-of-the-Practice
Publication: Journal of Bridge Engineering
Volume 26, Issue 3
Abstract
Bridge load testing can answer a variety of questions about bridge behavior that cannot be answered otherwise. The current governing codes and guidelines for bridge load testing in the United States are the 1998 NCHRP Manual for Bridge Rating through Load Testing and Chapter 8 of the AASHTO Manual for Bridge Evaluation. Over the last two decades, the practice of load testing has evolved, and its intersections with other fields have expanded. The outcomes of load tests have been used to keep bridges open cost-effectively without unnecessarily restricting legal loads, when theoretical analyses cannot yield insights representative of in-service performance. Load testing data can be further used to develop field-verified finite-element models of tested bridges to understand these structures better. In addition, structural reliability concepts can be used to estimate the probability of failure based on the results of load tests, and noncontact measurement techniques capturing large surfaces of bridges allow for better monitoring of structural responses. Given these developments, a new Transportation Research Board (TRB) Circular, Primer on Bridge Load Testing, has been developed. This document contains new proposals for interpreting the results of diagnostic load tests, loading protocols, and the determination of bridge load ratings based on the results of proof load tests. In addition, included provisions provide an estimation of the resulting reliability index and the remaining service life of a bridge based on load testing results. The benefit of load testing is illustrated based on a cost–benefit analysis. The current state-of-the-practice has demonstrated that load testing is an effective means for answering many important questions regarding bridge behavior that are critical to decisions on bridge maintenance or replacement. Load testing has evolved over its history, and the newly developed TRB Circular reflects this evolution in a practical way.
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References
AASHTO. 1994. Manual for condition evaluation of bridges, 2nd edition including 1995, 1996, 1998, and 2000 interim revisions. Washington, DC: AASHTO.
AASHTO. 2003. Manual for condition evaluation of bridges, 2nd edition with 2003 interim revisions. Washington, DC: AASHTO.
AASHTO. 2015. AASHTO LRFD bridge design specifications, 7th edition with 2015 interim specifications. 7th ed. Washington, DC: AASHTO.
AASHTO. 2016. The manual for bridge evaluation with 2016 interim revisions. 2nd ed. Washington, DC: AASHTO.
Aguilar, C. V., D. V. Jáuregui, C. M. Newtson, B. D. Weldon, and T. M. Cortez. 2015. “Load rating a prestressed concrete double-tee beam bridge without plans by proof testing.” Transp. Res. Rec. (2522): 90–99.
Alampalli, S., D. M. Frangopol, J. Grimson, D. Kosnik, M. Halling, E. O. L. Lantsoght, J. S. Weidner, D. Y. Yang, and Y. E. Zhou. 2019. Primer on bridge load testing. Transportation Research Circular E-C257. Washington, DC: Transportation Research Board.
Alampalli, S., and O. Hag-Elsafi. 2013. “Load testing of bridge FRP applications.” Chap. 40 in International handbook of FRP composites in civil engineering, edited by M. Zoghi, 607–622. London: CRC Press.
Alampalli, S., and F. Jalinoos. 2009. “Use of NDT technologies in US bridge inspection practice.” Mater. Eval. 67 (11): 1236–1246.
Alampalli, S., and J. Kunin. 2002. “Rehabilitation and field testing of an FRP bridge deck on a truss bridge.” Compos. Struct. 57 (1–4): 373–375. https://doi.org/10.1016/S0263-8223(02)00104-6.
Alampalli, S., and J. Kunin. 2003. “Load testing of an FRP bridge deck on a truss bridge.” Appl. Compos. Mater. 10 (2): 85–102. https://doi.org/10.1023/A:1022885728627.
Alampalli, S., and R. Lund. 2006. “Estimating fatigue life of bridge components using measured strains.” J. Bridge Eng. 11 (6): 725–736. https://doi.org/10.1061/(ASCE)1084-0702(2006)11:6(725).
Anay, R., T. M. Cortez, D. V. Jáuregui, M. K. ElBatanouny, and P. Ziehl. 2016. “On-site acoustic-emission monitoring for assessment of a prestressed concrete double-tee-beam bridge without plans.” J. Perform. Constr. Facil. 30 (4): 04015062. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000810.
Ang, A. H.-S., and W. H. Tang. 2007. Probability concepts in engineering: Emphasis on applications in civil & environmental engineering. 2nd ed. Hoboken, NJ: Wiley.
Barker, M. G. 2001. “Quantifying field-test behavior for rating steel girder bridges.” J. Bridge Eng. 6 (4): 254–261. https://doi.org/10.1061/(ASCE)1084-0702(2001)6:4(254).
Casas, J. R., and J. D. Gómez. 2013. “Load rating of highway bridges by proof-loading.” KSCE J. Civ. Eng. 17 (3): 556–567. https://doi.org/10.1007/s12205-013-0007-8.
Chen, Y., D. J. Corr, and P. L. Durango-Cohen. 2014. “Analysis of common-cause and special-cause variation in the deterioration of transportation infrastructure: A field application of statistical process control for structural health monitoring.” Transp. Res. Part B Methodol. 59: 96–116. https://doi.org/10.1016/j.trb.2013.11.002.
Cochet, D., P. Corfdir, G. Delfosse, Y. Jaffre, T. Kretz, G. Lacoste, D. Lefaucheur, V. L. Khac, and M. Prat. 2004. Epreuves de chargement des ponts-routes et passerelles pietonnes. Bagneux-Cedex, France: Stra-Service d’Etudes techniques des routes et autoroutes.
Coletti, D. A. 2002. “Analytical and field investigation of Roma suspension bridge.” J. Bridge Eng. 7 (3): 156–165. https://doi.org/10.1061/(ASCE)1084-0702(2002)7:3(156).
Commander, B. 2019. “Evolution of bridge diagnostic load testing in the USA.” Front. Built Environ. 5: 57. https://doi.org/10.3389/fbuil.2019.00057.
CSI (Český Normalizační Institut). 1996. ČSN 73 6209 (736209) loading tests of bridges. [Zatěžovací zkoušky mostů] Prague, Czech Republic: CSI.
Deutscher Ausschuss für Stahlbeton. 2000. DAfStb-Richtlinie: Belastungsversuche an Betonbauwerken. Berlin: Deutscher Ausschuss fur Stahlbeton.
Eberts, S. M., M. D. Woodside, M. N. Landers, and C. R. Wagner. 2019. Monitoring the pulse of our nation’s rivers and streams—The U.S. Geological Survey streamgaging network. Fact Sheet 2018-3081. Reston, VA: USGS. https://doi.org/10.3133/fs20183081.
Ellingwood, B. 1996. “Reliability-based condition assessment and LRFD for existing structures.” Struct. Saf. 18 (2–3): 67–80. https://doi.org/10.1016/0167-4730(96)00006-9.
Estes, A. C., and D. M. Frangopol. 1999. “Repair optimization of highway bridges using system reliability approach.” J. Struct. Eng. 125 (7): 766–775. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:7(766).
Faber, M. H., D. V. Val, and M. G. Stewart. 2000. “Proof load testing for bridge assessment and upgrading.” Eng. Struct. 22 (12): 1677–1689. https://doi.org/10.1016/S0141-0296(99)00111-X.
Fiorillo, G., and M. Ghosn. 2014. “Procedure for statistical categorization of overweight vehicles in a WIM database.” J. Transp. Eng. 140 (5): 04014011. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000655.
Fischer, K., C. Viljoen, J. Köhler, and M. H. Faber. 2019. “Optimal and acceptable reliabilities for structural design.” Struct. Saf. 76: 149–161. https://doi.org/10.1016/j.strusafe.2018.09.002.
Frangopol, D. M. 2011. “Life-cycle performance, management, and optimization of structural systems under uncertainty: Accomplishments and challenges.” Struct. Infrastruct. Eng. 7 (6): 389–413. https://doi.org/10.1080/15732471003594427.
Frangopol, D. M., and P. C. Das. 1999. “Management of bridge stocks based on future reliability and maintenance costs.” In Current and future trends in bridge design, construction, and maintenance, edited by P. C. Das, D. M. Frangopol, and A. S. Nowak, 45–58. Thomas Telford, London: The Institution of Civil Engineers.
Frangopol, D. M., Y. Dong, and S. Sabatino. 2017. “Bridge life-cycle performance and cost: Analysis, prediction, optimisation and decision-making.” Struct. Infrastruct. Eng. 13 (10): 1239–1257. https://doi.org/10.1080/15732479.2016.1267772.
Frangopol, D. M., K. Y. Lin, and A. C. Estes. 1997. “Life-cycle cost design of deteriorating structures.” J. Struct. Eng. 123 (10): 1390–1401. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:10(1390).
Frangopol, D. M., and M. Soliman. 2016. “Life-cycle of structural systems: Recent achievements and future directions.” Struct. Infrastruct. Eng. 12 (1): 1–20. https://doi.org/10.1080/15732479.2014.999794.
Frangopol, D. M., D. Y. Yang, E. O. L. Lantsoght, and R. D. J. M. Steenbergen. 2019. “Reliability-based analysis and life-cycle management of load tests.” Chap. 9 in Load testing of bridges: Proof load testing and the future of load testing, edited by E. O. L. Lantsoght, 265–296. London: Taylor & Francis.
Frýba, L., and M. Pirner. 2001. “Load tests and modal analysis of bridges.” Eng. Struct. 23 (1): 102–109. https://doi.org/10.1016/S0141-0296(00)00026-2.
Fu, G., F. Pezze, and S. Alampalli. 1997. “Diagnostic load testing for bridge load rating.” Transp. Res. Rec. 1594: 125–133. https://doi.org/10.3141/1594-13.
García-Segura, T., V. Yepes, D. M. Frangopol, and D. Y. Yang. 2017. “Lifetime reliability-based optimization of post-tensioned box-girder bridges.” Eng. Struct. 145: 381–391. https://doi.org/10.1016/j.engstruct.2017.05.013.
Hag-Elsafi, O., S. Alampalli, and J. Kunin. 2004. “In-service evaluation of a reinforced concrete T-beam bridge FRP strengthening system.” Compos. Struct. 64 (2): 179–188. https://doi.org/10.1016/j.compstruct.2003.08.002.
Hag-Elsafi, O., R. Lund, and S. Alampalli. 2002. “Strengthening of a bridge pier capbeam using bonded FRP composite plates.” Compos. Struct. 57 (1–4): 393–403. https://doi.org/10.1016/S0263-8223(02)00107-1.
Halfawy, M., T. Wipf, D. Wood, A. Abu-Hawash, and B. Phares. 2002. “Bridge load rating using an integrated load testing and finite element analysis approach: A case study.” In Proc., 4th Structural Specialty Conf. of the Canadian Society for Civil Engineering, 1–9. Québec, QC: Canadian Society for Civil Engineering.
Halicka, A., D. A. Hordijk, and E. O. L. Lantsoght. 2018. “Rating of concrete road bridges with static proof load tests.” In Evaluation of Concrete Bridge Behavior Through Load Testing—Int. Perspectives, ACI Special Publication 323, 3.1–3.16. Farmington Hills, MI: ACI.
Hendawi, S., and D. M. Frangopol. 1994. “System reliability and redundancy in structural design and evaluation.” Struct. Saf. 16 (1–2): 47–71. https://doi.org/10.1016/0167-4730(94)00027-N.
Hernandez, E. S., and J. J. Myers. 2018. “Diagnostic test for load rating of a prestressed SCC bridge.” ACI Spec. Publ. 323: 11.1–11.16.
Hungarian Chamber of Engineers. 2013. Guidelines for interventions in Hungary. [In Hungarian.] Budapest, Hungary: Hungarian Chamber of Engineers.
ICE (Institution of Civil Engineers), National Steering Committee for the Load Testing of Bridges. 1998. Guidelines for the supplementary load testing of bridges. London: Thomas Telford.
Jáuregui, D. V., and P. J. Barr. 2004. “Nondestructive evaluation of the I-40 bridge over the Rio Grande River.” J. Perform. Constr. Facil 18 (4): 195–204. https://doi.org/10.1061/(ASCE)0887-3828(2004)18:4(195).
Kim, Y. J., R. Tanovic, and R. G. Wight. 2009. “Recent advances in performance evaluation and flexural response of existing bridges.” J. Perform. Constr. Facil 23 (3): 190–200. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000007.
Koekkoek, R. T., E. O. L. Lantsoght, and D. A. Hordijk. 2015. Proof loading of the ASR-affected viaduct Zijlweg over highway A59. Stevin Rep. Nr. 25.5-15-08. Delft, Netherlands: Delft Univ. of Technology.
Kopácik, A. 2003. “Loading tests of highway bridges in Slovakia.” In Proc., 11th FIG Symp. on Deformation Measurements, edited by S. C. Stiros and S. Pytharouli, 1–7. Santorini Island, Greece: Patras University.
Kosnik, D. E. 2012. “A Web-enabled data management system for structural health monitoring of civil infrastructure.” Ph.D. thesis, Dept. of Civil and Environmental Engineering, Northwestern Univ.
Kosnik, D. E., and C. H. Dowding. 2015. “Autonomous monitoring of dynamic response of in-service structures for decision support.” J. Struct. Eng. 141 (1): D4014003. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001044.
Kosnik, D. E., and L. J. Henschen. 2013. “Design and interface considerations for Web-enabled data management in civil infrastructure health monitoring.” In Volume 8005 of Lecture Notes in Computer Science (Human–Computer Interaction 2013), 107–116. Berlin: Springer. https://doi.org/10.1007/978-3-642-39262-7_13.
Koteš, P., and J. Vican. 2013. “Recommended reliability levels for the evaluation of existing bridges according to Eurocodes.” Struct. Eng. Int. 23 (4): 411–417. https://doi.org/10.2749/101686613X13627351081678.
Lantsoght, E. O. L., C. Van der Veen, A. de Boer, and D. A. Hordijk. 2017a. “Proof load testing of reinforced concrete slab bridges in the Netherlands.” Struct. Concr. 18 (4): 597–606. https://doi.org/10.1002/suco.201600171.
Lantsoght, E. O. L., C. van der Veen, D. A. Hordijk, and A. de Boer. 2017b. “State-of-the-art on load testing of concrete bridges.” Eng. Struct. 150: 231–241. https://doi.org/10.1016/j.engstruct.2017.07.050.
Lichtenstein, A. G. 1993. Bridge rating through nondestructive load testing. NCHRP 12-28(13)A. Washington, DC: Transportation Research Board.
Liu, L., D. M. Frangopol, A. Mondoro, and D. Y. Yang. 2018. “Sustainability-informed bridge ranking under scour based on transportation network performance and multiattribute utility.” J. Bridge Eng. 23 (10): 04018082. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001296.
Ministerio de Fomento. 2009. Instrucciones para la Puesta en carga de estructuras (pruebas de carga provisionales). Madrid, Spain: Ministerio de Fomento.
Ministerio de Fomento. 2010. Instrucción de acciones a considerar en puentes de ferrocarril (IAPF). Madrid, Spain: Ministerio de Fomento.
Ministerio de Fomento-Direccion General de Carreteras. 1999. Recomendaciones para la realizacion de pruebas de carga de recepcion en puentes de carretera. Madrid, Spain: Ministerio de Fomento-Direccion General de Carreteras.
Moen, C. D., E. E. Shapiro, and J. Hart. 2013. “Structural analysis and load test of a nineteenth-century iron bowstring arch-truss bridge.” J. Bridge Eng. 18 (3): 261–271. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000341.
Moses, F., J. P. Lebet, and R. Bez. 1994. “Applications of field testing to bridge evaluation.” J. Struct. Eng. 120 (6): 1745–1762. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:6(1745).
NCHRP (National Cooperative Highway Research Program). 1998. Manual for bridge rating through load testing. NCHRP Project 12-28(13)A. Washington, DC: NCHRP.
Nilimaa, J., N. Bagge, T. Blanksvärd, and B. Täljsten. 2015. “NSM CFRP strengthening and failure loading of a posttensioned concrete bridge.” J. Compos. Constr. 20 (3): 04015076. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000635.
NRA (National Roads Authority). 2014. Load testing for bridge assessment. Dublin, Ireland: NRA.
OGC (Open Geospatial Consortium). 2014. OGC SensorML: Model and XML encoding standard. Document No. OGC 12-000. Wayland, MA: OGC.
Olaszek, P., M. Lagoda, and J. R. Casas. 2014. “Diagnostic load testing and assessment of existing bridges: Examples of application.” Struct. Infrastruct. Eng. 10 (6): 834–842. https://doi.org/10.1080/15732479.2013.772212.
Orban, Z., and M. Gutermann. 2009. “Assessment of masonry arch railway bridges using non-destructive in-situ testing methods.” Eng. Struct. 31 (10): 2287–2298. https://doi.org/10.1016/j.engstruct.2009.04.008.
Puurula, A. M., O. Enochsson, G. Sas, T. Blanksvärd, U. Ohlsson, L. Bernspång, B. Täljsten, A. Carolin, B. Paulsson, and L. Elfgren. 2015. “Assessment of the strengthening of an RC railway bridge with CFRP utilizing a full-scale failure test and finite-element analysis.” J. Struct. Eng. 141 (1): D4014008. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001116.
Research Institute of Roads and Bridges. 2008. The rules for road bridges proof loadings. [In Polish.] [Zalecenia dotyczące wykonywania badań pod próbnym obciążeniem drogowych obiektów mostowych]. Warsaw, Poland: Research Institute of Roads and Bridges.
Rijkswaterstaat. 2013. Guidelines assessment bridges—Assessment of structural safety of an existing bridge at reconstruction, usage and disapproval. [In Dutch.] RTD 1006:2013 1.1. Utrecht, Netherlands: Rijkswaterstaat.
Sabatino, S., D. M. Frangopol, and Y. Dong. 2015. “Sustainability-informed maintenance optimization of highway bridges considering multi-attribute utility and risk attitude.” Eng. Struct. 102: 310–321. https://doi.org/10.1016/j.engstruct.2015.07.030.
Sabatino, S., D. M. Frangopol, and Y. Dong. 2016. “Life cycle utility-informed maintenance planning based on lifetime functions: Optimum balancing of cost, failure consequences and performance benefit.” Struct. Infrastruct. Eng. 12 (7): 830–847. https://doi.org/10.1080/15732479.2015.1064968.
Schacht, G., G. Bolle, and S. Marx. 2016. “Belastungsversuche—Internationaler Stand des Wissens.” Bautechnik 93 (2): 85–97. https://doi.org/10.1002/bate.201500097.
Shenton, H. W., M. J. Chajes, and J. Huang. 2007. Load rating of bridges without plans. DCT 195. Newark, Delaware: Delaware Center for Transportation.
Shifferaw, Y., and F. S. Fanous. 2013. “Field testing and finite element analysis of steel bridge retrofits for distortion-induced fatigue.” Eng. Struct. 49: 385–395. https://doi.org/10.1016/j.engstruct.2012.11.023.
SIA. 2011. Existing structures—Bases for examination and interventions. SIA 505 269:2011. Silver Spring, MD: SIA.
Slovak Standardization Institute. 1979. STN 73 6209 (736209) loading tests of bridges. [Zaťažovacie skúšky mostov] Bratislava, Slovakia: Slovak Standardization Institute.
Taylor, S. E., B. Rankin, D. J. Cleland, and J. Kirkpatrick. 2007. “Serviceability of bridge deck slabs with arching action.” ACI Struct. J. 104 (1): 39–48.
USACE. 2019. National Levee Database. Washington, DC: USACE. https://levees.sec.usace.army.mil/.
USCFR (US Code of Federal Regulations). 2011. 23 CFR § 650.311—Inspection frequency. Washington, DC: USCFR.
Veneziano, D., D. Galeota, and M. M. Giammatteo. 1984a. “Analysis of bridge proof-load data I: Model and statistical procedures.” Struct. Saf. 2 (2): 91–104. https://doi.org/10.1016/0167-4730(84)90013-4.
Veneziano, D., D. Galeota, and M. M. Giammatteo. 1984b. “Analysis of bridge proof-load data II. Numerical results.” Struct. Saf. 2 (3): 177–198. https://doi.org/10.1016/0167-4730(85)90025-6.
Veneziano, D., R. Meli, and M. Rodriguez. 1978. “Proof loading for target reliability.” J. Struct. Div. 104 (1): 79–93.
Wang, N., B. R. Ellingwood, and A.-H. Zureick. 2009. Condition assessment of existing bridge structures, report of task 1. GODT Rep. No. RP05-01. Atlanta, GA: Georgia Dept. of Transportation.
Wang, Z., D. Y. Yang, D. M. Frangopol, and W. Jin. 2020. “Inclusion of environmental impacts in life-cycle cost analysis of bridge structures.” Sustainable Resilient Infrastruct. 5 (4): 252–267. https://doi.org/10.1080/23789689.2018.1542212.
Wipf, T. J., B. M. Phares, F. W. Klaiber, D. L. Wood, E. Mellingen, and A. Samuelson. 2003. Development of bridge load testing process for load evaluation. Final Rep., Iowa DOT Project TR-445, CTRE Project 00-65. Ames, IA: Iowa State Univ.
Yang, D. Y., and D. M. Frangopol. 2018. “Risk-Informed bridge ranking at project and network levels.” J. Infrastruct. Syst. 24 (3): 04018018. https://doi.org/10.1061/(ASCE)IS.1943-555X.0000430.
Yang, D. Y., D. M. Frangopol, and J.-G. Teng. 2019. “Probabilistic life-cycle optimization of durability-enhancing maintenance actions: Application to FRP strengthening planning.” Eng. Struct. 188: 340–349. https://doi.org/10.1016/j.engstruct.2019.02.055.
Yannotti, A. P., S. Alampalli, O. C. J.S., S. G, H. Greenberg, and M. Norfolk. 2000. “Proof load testing and monitoring of an FRP composite bridge.” In Structural Materials Technology: An NDT Conf., 281–286. Lancaster, PA: Technomic Publishing.
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Journal of Bridge Engineering
Volume 26 • Issue 3 • March 2021
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© 2020 American Society of Civil Engineers.
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Published online: Dec 21, 2020
Published in print: Mar 1, 2021
Discussion open until: May 21, 2021
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