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).

[Médaille de la Commission impériale commémorant l'exposition universelle de Paris en 1867] / H. Ponscarme f.

Ancien possesseur : Labrouste, Henri (1801-1875)

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

Weekly letting report.

Audit report on the Cedar County Economic Development Commission for the year ended June 30, 2010

Audit report on the Cedar County Economic Development Commission for the year ended June 30, 2010

Audit report on the Iowa College Student Aid Commission for the year ended June 30, 2010

Audit report on the Iowa College Student Aid Commission for the year ended June 30, 2010

Iowa Department of Transportation Major Items - Preliminary Quantity Report, August 16, 2011; With Addendums

Weekly letting report.

Iowa Department of Transportation Major Items - Preliminary Quantity Report, September 20, 2011; With Addendums

Weekly letting report.

Final Report-Freeway Operations Analysis of I-80 to I-29 Interchange, January 1974

A t the request of the Iowa State Highway Commission, the Engineering Research Institute observed the traffic operations at the Interstate 29 (1-29) and Interstate 80 (1-80) interchange in the southwest part of Council Bluffs. The general location of the site is shown in Figure 1. Before limiting the analysis to the diverging area the project staff drove the entire Council Bluffs freeway system and consulted with M r . Philip Hassenstab (Iowa State Highway Commission, District 4, Resident Maintenance Engineer at Council Bluffs). The final study scope was delineated as encompassing only the operational characteristics of the diverge area where 1-29 South and 1-80 East divide and the ramp to merge area where 1-80 West joins 1-29 North (both areas being contained within the aforementioned interchange). Supplementing the traffic operations scope, was an effort to delineate and document the applicability of video-tape techniques to traffic engineering studies and analyses. Documentation was primarily in the form of a demonstration video-tape.

Report on the Iowa State Civil Rights Commission for the year ended June 30, 2010

Report on the Iowa State Civil Rights Commission for the year ended June 30, 2010

Iowa Department of Transportation Major Items - Preliminary Quantity Report, October 18, 2011; With Addendums

Weekly letting report.

Report on the Iowa Department of Transportation for the year ended June 30, 2010

Report on the Iowa Department of Transportation for the year ended June 30, 2010

A Transportation Safety Planning Tool for the City of Ames, August 2011

The historically-reactive approach to identifying safety problems and mitigating them involves selecting black spots or hot spots by ranking locations based on crash frequency and severity. The approach focuses mainly on the corridor level without taking the exposure rate (vehicle miles traveled) and socio-demographics information of the study area, which are very important in the transportation planning process, into consideration. A larger study analysis unit at the Transportation Analysis Zone (TAZ) level or the network planning level should be used to address the needs of development of the community in the future and incorporate safety into the long-range transportation planning process. In this study, existing planning tools (such as the PLANSAFE models presented in NCHRP Report 546) were evaluated for forecasting safety in small and medium-sized communities, particularly as related to changes in socio-demographics characteristics, traffic demand, road network, and countermeasures. The research also evaluated the applicability of the Empirical Bayes (EB) method to network-level analysis. In addition, application of the United States Road Assessment Program (usRAP) protocols at the local urban road network level was investigated. This research evaluated the applicability of these three methods for the City of Ames, Iowa. The outcome of this research is a systematic process and framework for considering road safety issues explicitly in the small and medium-sized community transportation planning process and for quantifying the safety impacts of new developments and policy programs. More specifically, quantitative safety may be incorporated into the planning process, through effective visualization and increased awareness of safety issues (usRAP), the identification of high-risk locations with potential for improvement, (usRAP maps and EB), countermeasures for high-risk locations (EB before and after study and PLANSAFE), and socio-economic and demographic induced changes at the planning-level (PLANSAFE).

Iowa Department of Transportation Quick Tour

Quick Tour gives a brief overview of Iowa DOT's current management personnel and statewide transportation statistics.