Water Summary Update, September 5, 2012, No. 13

A snapshot of water resource trends prepared by the Iowa DNR in collaboration with the Iowa Department of Agriculture and Land Stewardship, the U.S. Geological Survey, and The Iowa Homeland Security and Emergency Management Department.

Condition of the State of Iowa, January 13, 2015

A transcript of the Condition of the State of Iowa speech by Governor Terry Branstad delivered at the State Capitol on January 13, 2015

1997-1998 University of Northern Iowa Annual Financial Report, November 13, 1998

Comprehensive Annual Financial Report For University of Northern Iowa.

2006-2007 University of Northern Iowa Comprehensive Annual Financial Report, December 13, 2007

Comprehensive Annual Financial Report For University of Northern Iowa.

Iowa Library Services/State Library Update, January 2015, Vol. 13, no. 1

Quarterly update for Iowa Library Services/State Library patrons.

1949 53rd GA Inaugural Address by Governor Beardsley, January 13, 1947

This is the Inaugural Address of Governor to the General Assembly.

1955 56th GA Inaugural Address by Governor Hoegh, January 13, 1955

This is the Inaugural Address of Governor to the General Assembly.

Friday Facts, February 13, 2015, Vol. 241

Bureau of Nutrition and Health Promotion part of the Iowa Department of Public Health produces of weekly newsletter about the Iowa WIC Program for the State of Iowa citizen.

Action Plan: For implementing the recommendations of the Iowa Governor's Pre-White House Conference on Library and Information Services, April 30, May 1 and 2, 1991 and the White House Conference on Library and Information Services, July 9-13, 1991

This report includes the objectives, implementation responsibilities and target dates recommended and passed by the delegates to the Iowa Governor's Pre-White House Conference on Library and Information Services (April 30-May 2, 1991) or the White House Conference on Library and Information Services (July 9-13, 1991. Text of the relevant recommendations is included for each objective.

Assessment of Asphalt Interlayer Designed on Jointed Concrete, InTrans Project 13-475, 2014

Reflective cracking in hot mix asphalt (HMA) overlays has been a common cause of poor pavement performance in Iowa for many years. Reflective cracks commonly occur in HMA overlays when deteriorated portland cement concrete is paved over with HMA. This results in HMA pavement surfaces with poor ride quality and increased transportation maintenance costs. To delay the formation of cracks in HMA overlays, the Iowa Department of Transportation (Iowa DOT) has begun to implement a crack-relief interlayer mix design specification. The crack-relief interlayer is an asphalt-rich, highly flexible HMA that can resist cracking in high strain loading conditions. In this project, the field performance of an HMA overlay using a one inch interlayer was compared to a conventional HMA overlay without an interlayer. Both test sections were constructed on US 169 in Adel, Iowa as part of an Iowa DOT overlay project. The laboratory performance of the interlayer mix design was assessed for resistance to cracking from repeated strains by using the four-point bending beam apparatus. An HMA using a highly polymer modified binder was designed and shown to meet the laboratory performance test criteria. The field performance of the overlay with the interlayer exceeded the performance of the conventional overlay that did not have the interlayer. After one winter season, 29 percent less reflective cracking was measured in the pavement section with the interlayer than the pavement section without the interlayer. The level of cracking severity was also reduced by using the interlayer in the overlay.

Modeling Merging Behavior at Lane Drops, InTrans Projects 13-466 and 06-277, 2015

In work-zone configurations where lane drops are present, merging of traffic at the taper presents an operational concern. In addition, as flow through the work zone is reduced, the relative traffic safety of the work zone is also reduced. Improving work-zone flow-through merge points depends on the behavior of individual drivers. By better understanding driver behavior, traffic control plans, work zone policies, and countermeasures can be better targeted to reinforce desirable lane closure merging behavior, leading to both improved safety and work-zone capacity. The researchers collected data for two work-zone scenarios that included lane drops with one scenario on the Interstate and the other on an urban arterial roadway. The researchers then modeled and calibrated these scenarios in VISSIM using real-world speeds, travel times, queue lengths, and merging behaviors (percentage of vehicles merging upstream and near the merge point). Once built and calibrated, the researchers modeled strategies for various countermeasures in the two work zones. The models were then used to test and evaluate how various merging strategies affect safety and operations at the merge areas in these two work zones.

Friday Facts, March 13, 2015, Vol. 244

Bureau of Nutrition and Health Promotion part of the Iowa Department of Public Health produces of weekly newsletter about the Iowa WIC Program for the State of Iowa citizen.

EPI Update, February 13, 2015

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health.

EPI Update, March 13, 2015

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health.

Iowa Crop Progress & Condition, April 13, 2015

Report produced by the The Department of Agriculture and Land Stewardship, Climatology Bureau. Weather report released by the USDA National Agricultural Statistical Service. The report is released weekly from April through October. Formally titled: Iowa Crop and Weather Report