Pavement renewal on urban Interstate highways and other urban freeways and expressways is a growing national concern as more and more of the 113,000 lane miles of this network exceed the pavement design life. Pavement renewal and related costs are at the core of "billion dollar" projects under construction or on the drawing board. Because of the disruption these projects may cause, the initial costs to highway users and local communities often dwarf the capital cost of renewal. Both transportation agencies and the construction industry have introduced effective new technologies and techniques on a local or regional basis and can envision still other innovations to better manage and execute such projects and to improve the durability of the resultant product. In addressing the urgent need to renew vast sections of urban roadways, the workshop was designed to provide a forum where experienced agency and private-sector engineers and constructors would work together to bring definition to the issues involved in a realistic but non-competitive environment. The workshop objectives were to (i) synthesise and publicise effective solutions drawn from the mutual experience of the participants; (ii) highlight the existence of available but underused technologies and research results, as well as innovative approaches to project management and contract administration; (iii) point out barriers, both technical and procedural, to cost-effective and time-efficient designs and construction approaches; (iv) identify pressing needs to be addressed in local and national research agendas; and (v) identify needed technologies. (A)
Samenvatting