The XIIIth World Meeting of the International Road Federation was held in Toronto, Ontario from June 16 to 20, 1997. The papers are presented in one of the three official languages of the conference as submitted by the author (English, French or Spanish). The proceedings are available on CD-Rom. This work session contains the following papers: 3-D Parametric Modelling for Bridge Structures (Fam,A)[English]; A Commitment to Aesthetics When Restoring Historical Bridges (de Pablo,JJA) [Spanish]; A New Waterproofing System for High-Speed Application on Concrete Bridge Decks (Marsot,A, Brule,B, Bayle,MP, Dimitri,A) [English]; Bridge Testing and Management During their Construction and Serviceable Years (Astudillo,R) [Spanish]; Construction of Kurushima Bridge (Yanaka,Y, Mori,A Yoshikawa,S) [English]; Design and Performance of Integral Abutment Bridge in Ontario (Presentation) (Husain,I, Holowka,M) [English]; Detroit - Windsor Tunnel Rehabilitation - Practical and Innovative Aspects (Hebert,VJ, Naudts,A, Lelito,J) [English]; Electrochemical Repair of Concrete Review of Realkalisation and Desalination - 8 Years On (Nustad,GE) [English]; Eurocodes in the Bridges Project (Torrealba,JMA) [Spanish]; Evaluation Procedures for a Rope-Strand Suspension Bridge (Savard,M, Talbot,M) [English]; Highway 407 ETR - Express Toll Route - A Post Tensioned Concrete Box Girder Bridge for the Highway 404/407 Interchange (Radolli,R, Oliver,DC, Tam,PK) [English]; Highway 407 ETR - Express Toll Route - Development of Precast Concrete Girder Bridge Designs (Beck,JM, Windover,L, Aleong,GL, Lin,WL) [English]. (Continued on IRRD abstract No. 490261).