Annual Report of the Iowa Highway Research Board Research and Development Activities FY 2010

The Highway Division of the Iowa Department of Transportation (Iowa DOT) engages in research and development for two reasons: first, to find workable solutions to the many problems that require more than ordinary, routine investigation; and second, to identify and implement improved engineering and management practices. This report, entitled ―Iowa Highway Research Board Research and Development Activities FY2009‖ is submitted in compliance with Sections 310.36 and 312.3A, Code of Iowa, which direct the submission of a report of the Secondary Road Research Fund and the Street Research Fund, respectively.

Iowa Department of Transportation Major Items - Preliminary Quantity Report, April 19, 2011; With Addendums

Weekly letting report.

Iowa Department of Transportation Major Items - Preliminary Quantity Report, May 17, 2011; With Addendums

Weekly letting report.

Iowa Department of Transportation, Contracts Accepted, April 4, 2011

Contracts Accepted by Iowa Department of Transportation

Iowa Department of Transportation, Contracts Accepted, March 21, 2011

Contracts Accepted by Iowa Department of Transportation

Iowa Department of Transportation, Contracts Accepted, March 28, 2011

Contracts Accepted by Iowa Department of Transportation

Contracts Accepted, Iowa Department of Transportation, March 28, 2011

Contracts Accepted for letting reports from the Iowa Department of Transportation.

Contracts Accepted, Iowa Department of Transportation, April 4, 2011

Contracts Accepted for letting reports from the Iowa Department of Transportation.

Contracts Accepted, Iowa Department of Transportation, April 11, 2011

Contracts Accepted for letting reports from the Iowa Department of Transportation.

Contracts Accepted, Iowa Department of Transportation, April 18, 2011

Contracts Accepted for letting reports from the Iowa Department of Transportation.

Iowa Department of Transportation Major Items - Preliminary Quantity Report, June 21, 2011; With Addendums

Weekly letting report.

Guidelines for Development – Transportation Improvement Programs (TIPs) and the Iowa Statewide Transportation Improvement Program (STIP, February 2011

This document serves as a reference guide to local planning agencies for the development of their regional Transportation Improvement Program (TIP) and the Statewide Transportation Improvement Program (STIP).

Iowa Department of Transportation Major Items - Preliminary Quantity Report, July 19, 2011; With Addendums

Weekly letting report.

Autovías y ferrocarriles: un modelo para evaluar efectos intermodales de la política de infraestructuras

La construcción de autovías disminuye el coste temporal del viaje por carretera, con efectos sobre la demanda del transporte por carretera. Pero, además de los efectos intramodales, existen efectos intermodales, puesto que las autovías afectan a la demanda en otros modos alternativos a la carretera. En este trabajo formulamos y contrastamos empíricamente un modelo que permite obtener resultados para evaluar el impacto de las autovías sobre la demanda de ferrocarril. Seguidamente se pronostican algunos efectos sobre la demanda ferroviaria de algunas actuaciones en infraestructuras viarias incluidas en el Plan Director de Infraestructuras (1993-2007).