Statewide Economic Impacts of Disaster-Related Payments to Support Household and Private and Public Sector Recovery in Iowa, January 2010

There have been a multitude of programs providing assistance to the state of Iowa in the past 18 months. Springtime 2008 disasters resulted in tornado damage and widespread flood damage to large fractions of the state. In consequence, there was a very large flow of federal and state resources dedicated to assisting community and statewide recovery efforts. The nation was in recession as well and continued to be in recession through much of 2009. A sizeable amount of assistance found its way to Iowa under the American Recovery and Reinvestment Act of 2009 in the forms of infrastructure stimulus spending, income supports and other safety net spending for households, and stabilization assistance for essential public services like education. On top of that, the state of Iowa authorized the I Jobs program as an additional infrastructure development program, and as a jobs stimulus program. The total amount of spending for all types of programs, disaster or economic recovery related, is perhaps as high as $7.5 billion over the next few years.

Iowa Department of Corrections Presentation to Transportation, Infrastructure, Capitals Appropriations Subcommittee, February 2008

An update of the following: Status of capital projects from prior year appropriations, appropriation from RIIF, and other other projects, current prison population, expected growth and over population, overview of revised classification system and how it affects bed planning, timeline for construction, 2009 funding, plan for the governor recommended $500,000 for project management and other infrastructure priorities.

Annual Infrastructure Report 2011, January 15, 2012

Major maintenance; health, safety, loss of use; and Americans with Disabilities Act deficiencies at the Capitol Complex and statewide for twelve agencies and divisions participating in the Vertical Infrastructure Program in collaboration with the Governor's Vertical Infrastructure Advisory Committee, including the Department of Administrative Services; the Department of Commerce, Alcoholic Beverages Division; the Department of Corrections; the Department of Cultural Affairs; the Department of Education, including Iowa Public Television and Iowa Vocational Rehabilitation Services; the Department of Human Services; Iowa Law Enforcement Academy; the Department of Public Safety; Terrace Hill; Iowa Veterans Home and Iowa Workforce Development. The advisory committee meets on a monthly basis to review the progress of the work and to make recommendations on procedures and priorities.

Infrastructure Annual Status Report - January 2013

This is the Iowa Department of Transportation’s summary of project status for infrastructure projects that have been appropriated revenue from various funds including Rebuild Iowa Infrastructure, Health Restricted Capitals, Bridge Safety, Revenue Bonds Capitals, and Revenue Bonds Capitals II.

Western Iowa Missouri River Flooding -- Geo-Infrastructure Damage Assessment, Repair and Mitigation Strategies, TR-638, 2013

The 2011 Missouri River flooding caused significant damage to many geo-infrastructure systems including levees, bridge abutments/foundations, paved and unpaved roadways, culverts, and embankment slopes in western Iowa. The flooding resulted in closures of several interchanges along Interstate 29 and of more than 100 miles of secondary roads in western Iowa, causing severe inconvenience to residents and losses to local businesses. The main goals of this research project were to assist county and city engineers by deploying and using advanced technologies to rapidly assess the damage to geo-infrastructure and develop effective repair and mitigation strategies and solutions for use during future flood events in Iowa. The research team visited selected sites in western Iowa to conduct field reconnaissance, in situ testing on bridge abutment backfills that were affected by floods, flooded and non-flooded secondary roadways, and culverts. In situ testing was conducted shortly after the flood waters receded, and several months after flooding to evaluate recovery and performance. Tests included falling weight deflectometer, dynamic cone penetrometer, three-dimensional (3D) laser scanning, ground penetrating radar, and hand auger soil sampling. Field results indicated significant differences in roadway support characteristics between flooded and non-flooded areas. Support characteristics in some flooded areas recovered over time, while others did not. Voids were detected in culvert and bridge abutment backfill materials shortly after flooding and several months after flooding. A catalog of field assessment techniques and 20 potential repair/mitigation solutions are provided in this report. A flow chart relating the damages observed, assessment techniques, and potential repair/mitigation solutions is provided. These options are discussed for paved/unpaved roads, culverts, and bridge abutments, and are applicable for both primary and secondary roadways.

Iowa DOT's Infrastructure Annual Status Report, 2014

This is the Iowa Department of Transportation's summary of project status for infrastructure projects that have been appropriated revenue from various funds including Rebuild Iowa Infrastructure, Health Restricted Capitals, Bridge Safety, Revenue Bonds Capitals, and revenue Bonds Capitals II.

Infrastructure Annual Status Report 2015

This is the Iowa Department of Transportation’s summary of project status for infrastructure projects that have been appropriated revenue from various funds including Rebuild Iowa Infrastructure, Health Restricted Capitals, Revenue Bonds Capitals and Revenue Bonds Capitals II.

Evaluation of the Confirmation Light System at Signalized Intersections in Medium to Large Iowa Communities to Reduce Red Light Running Violations”, TR-657, 2015

Red light running continues to be a serious safety concern for many communities in the United States. The Federal Highway Administration reported that in 2011, red light running accounted for 676 fatalities nationwide. Red light running crashes at a signalized intersections are more serious, especially in high speed corridors where speeds are above 35 mph. Many communities have invested in red light countermeasures including low-cost strategies (e.g. signal backplates, targeted enforcement, signal timing adjustments and improvement with signage) to high-cost strategies (e.g. automated enforcement and intersection geometric improvements). This research study investigated intersection confirmation lights as a low-cost strategy to reduce red light running violations. Two intersections in Altoona and Waterloo, Iowa were equipped with confirmation lights which targeted the through and left turning movements. Confirmation lights enable a single police officer to monitor a specific lane of traffic downstream of the intersection. A before-after analysis was conducted in which a change in red light running violations prior to- and 1 and 3 months after installation were evaluated. A test of proportions was used to determine if the change in red light running violation rates were statistically significant at the 90 and 95 percent levels of confidence. The two treatment intersections were then compared to the changes of red light running violation rates at spillover intersections (directly adjacent to the treatment intersections) and control intersections. The results of the analysis indicated a 10 percent reduction of red light running violations in Altoona and a 299 percent increase in Waterloo at the treatment locations. Finally, the research team investigated the time into red for each observed red light running violation. The analysis indicated that many of the violations occurred less than one second into the red phase and that most of the violation occurred during or shortly after the all-red phase.

Proof of Concept: Examining Characteristics of Roadway Infrastructure in Various 3D Visualization Modes, 2015

Utilizing enhanced visualization in transportation planning and design gained popularity in the last decade. This work aimed at demonstrating the concept of utilizing a highly immersive, virtual reality simulation engine for creating dynamic, interactive, full-scale, three-dimensional (3D) models of highway infrastructure. For this project, the highway infrastructure element chosen was a two-way, stop-controlled intersection (TWSCI). VirtuTrace, a virtual reality simulation engine developed by the principal investigator, was used to construct the dynamic 3D model of the TWSCI. The model was implemented in C6, which is Iowa State University’s Cave Automatic Virtual Environment (CAVE). Representatives from the Institute of Transportation at Iowa State University, as well as representatives from the Iowa Department of Transportation, experienced the simulated TWSCI. The two teams identified verbally the significant potential that the approach introduces for the application of next-generation simulated environments to road design and safety evaluation.

Issue review : Rebuild Iowa Infrastructure Fund (RIIF).

The state has several resources that provide funding for infrastructure-related projects. The Rebuild Iowa Infrastructure Fund, or RIIF, established in code section 8.57, subsection 6, is the primary funding source for state-financed public infrastructure-related expenditures. This issue review provides an overview and history of the RIIF, revenues deposited in the RIIF, recent funding trends and timeline of items affecting RIIF for future planning.

Wireless Sensor Networks for Infrastructure Monitoring, TR-611, 2010

A good system of preventive bridge maintenance enhances the ability of engineers to manage and monitor bridge conditions, and take proper action at the right time. Traditionally infrastructure inspection is performed via infrequent periodical visual inspection in the field. Wireless sensor technology provides an alternative cost-effective approach for constant monitoring of infrastructures. Scientific data-acquisition systems make reliable structural measurements, even in inaccessible and harsh environments by using wireless sensors. With advances in sensor technology and availability of low cost integrated circuits, a wireless monitoring sensor network has been considered to be the new generation technology for structural health monitoring. The main goal of this project was to implement a wireless sensor network for monitoring the behavior and integrity of highway bridges. At the core of the system is a low-cost, low power wireless strain sensor node whose hardware design is optimized for structural monitoring applications. The key components of the systems are the control unit, sensors, software and communication capability. The extensive information developed for each of these areas has been used to design the system. The performance and reliability of the proposed wireless monitoring system is validated on a 34 feet span composite beam in slab bridge in Black Hawk County, Iowa. The micro strain data is successfully extracted from output-only response collected by the wireless monitoring system. The energy efficiency of the system was investigated to estimate the battery lifetime of the wireless sensor nodes. This report also documents system design, the method used for data acquisition, and system validation and field testing. Recommendations on further implementation of wireless sensor networks for long term monitoring are provided.

Iowa Infrastructure Investment Program: Report of the Governor on the Status of the I-Jobs Program, January 7, 2011

Department of Management reporting on the status of the Iowa Infrastructure Investment Program, known as the I-JOBS Program, as of September 30, 2010 with additional survey information from departments on the number of positions supported through October 31, 2010.

Annual Infrastructure Status Report 2014

This is the Iowa Department of Transportation’s summary of project status for infrastructure projects that have been appropriated revenue from various funds including Rebuild Iowa Infrastructure, Health Restricted Capitals, Revenue Bonds Capitals and Revenue Bonds Capitals II.

Annual Infrastructure Report 2009, January 25, 2010

Major maintenance; health, safety, loss of use; and Americans with Disabilities Act deficiencies at the Capitol Complex and statewide for twelve agencies and divisions participating in the Vertical Infrastructure Program in collaboration with the Governor's Vertical Infrastructure Advisory Committee, including the Department of Administrative Services; the Department of Commerce, Alcoholic Beverages Division; the Department of Corrections; the Department of Cultural Affairs; the Department of Education, including Iowa Public Television and Iowa Vocational Rehabilitation Services; the Department of Human Services; Iowa Law Enforcement Academy; the Department of Public Safety; Terrace Hill; Iowa Veterans Home and Iowa Workforce Development. The advisory committee meets on a monthly basis to review the progress of the work and to make recommendations on procedures and priorities. Additional information on major maintenance projects is available in the advisory committee's Tenth Annual Report to the Governor, dated December 15, 2008.

Annual Infrastructure Report 2010 January 28, 2011

Major maintenance; health, safety, loss of use; and Americans with Disabilities Act deficiencies at the Capitol Complex and statewide for twelve agencies and divisions participating in the Vertical Infrastructure Program in collaboration with the Governor's Vertical Infrastructure Advisory Committee, including the Department of Administrative Services; the Department of Commerce, Alcoholic Beverages Division; the Department of Corrections; the Department of Cultural Affairs; the Department of Education, including Iowa Public Television and Iowa Vocational Rehabilitation Services; the Department of Human Services; Iowa Law Enforcement Academy; the Department of Public Safety; Terrace Hill; Iowa Veterans Home and Iowa Workforce Development. The advisory committee meets on a monthly basis to review the progress of the work and to make recommendations on procedures and priorities. Additional information on major maintenance projects is available in the advisory committee's Tenth Annual Report to the Governor, dated December 15, 2008.