As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation constructed 19 Specific Pavement Studies 6 (SPS‐6) test sections on Interstate 40 near Flagstaff. The SPS‐6 project studied the effect of specific rehabilitation treatments on jointed portland cement concrete pavement (JPCP) performance. The test sections had various JPCP surface preparations, including crack and seat, minimum and maximum restoration, rubblization, asphalt concrete (AC) with fabric, and asphalt rubber with conventional AC. Opened to traffic in 1991, the project was monitored at regular intervals until 2002. Surface distress, profile, and deflection data collected throughout the life of the pavement were used to evaluate the performance of various flexible pavement design features, layer configurations, and thickness. This report documents the analyses conducted as well as practical findings and lessons learned that will be of interest to ADOT.

Wildlife 20/20 provides broad strategic guidance for all department programs. It is intended to be a living document that conveys policy direction that the Arizona Game and Fish Commission has provided to the department to guide its work into the future. It will be complemented by additional plans designed to provide more specific direction, as needed.

This document contains laws related to wildlife in Arizona, from statehood in 1912 through 1962. This is a supplement to “Bringing Back the Game: Arizona Wildlife Management, 1912–1962,” a book of wildlife management history published by the Arizona Game and Fish Department in 2012.

Included are those bills passed by the Arizona State Legislature between 1912 and 1962, signed by the governor and incorporated as “Game and Fish Law” under the Arizona Revised Statutes. Other initiatives, referenda, and statutes pertaining to wildlife (including predatory and noxious animals) are also included, thereby providing an accessible resource for those interested in the history of Arizona’s wildlife laws.

This document is neither exhaustive nor complete. Some bills that are arcane or repetitive, or that served a housekeeping purpose, are not included. Some legislation is summarized with annotations by the author and not presented verbatim. The purpose is illustrative only and not intended to either replace the actual laws, or be taken as current law.

This study investigated whether highways acted as barriers to gene flow for pronghorn in northern Arizona. DNA samples from 132 pronghorn were analyzed using eight polymorphic microsatellite loci. Samples represented animals living on opposite sides of US Route 89 (US 89) and State Route 64 (SR 64). Two different modeling approaches indicated that both US 89 and SR 64, and to a lesser extent US Route 180 (US 180), acted as barriers to gene flow. The genetic structuring caused by highways, especially across US 89, is consistent with behavioral data that demonstrated pronghorn rarely cross this highway. This study found no evidence of inbreeding or reduced genetic variation in any of the populations examined, but those effects may take longer to appear. Based on these results, the researchers recommend future genetic monitoring of these populations or assessment of genetic variation across highways with larger traffic volumes or longer histories to determine whether the barrier effects documented here lead to loss of genetic diversity.

The Arizona transportation history project was conceived in anticipation of Arizona’s centennial, which will be celebrated in 2012. Following approval of the Arizona Centennial Plan in 2007, the Arizona Department of Transportation recognized that the centennial celebration would present an opportunity to inform Arizonans of the crucial role that transportation has played in the growth and development of the state.

The report consists of a historical narrative and a series of topical essays. The seven-chapter historical narrative is a history of Arizona’s highways that extends from the pre-Columbian era to the present. The 14 topical essays extend the scope of the history beyond the state’s highway system. They include overviews of the development of other transportation modes (railroads, aviation, and urban transit), a brief history of highway pavements, a lighthearted look at the motoring experience during the 1920s and 1930s, and an exploration of how changes in transportation infrastructure affected some Arizona communities. The topical essays also provide additional historical information on bridges, urban freeways, the Interstate system, ADOT and its predecessor agencies, and famous roads such as U.S. Route 66, U.S. Route 89, the Black Canyon Highway, and the Beeline Highway.

The report also includes a timeline of transportation-related developments. This chronology not only provides an accessible overview of Arizona’s transportation history; it also places that history in a larger context by including transportation-related developments from the rest of the nation and around the world. Finally, the report contains a guide to archives in Arizona that hold significant collections of historical photographs related to the state’s transportation history, a bibliography of published historical sources related to the history of highways in Arizona, and a discussion of how the historical narrative and topical essays could be used to produce publications and media that would be made available to the public.

Apache trout is a federally threatened salmonid native to headwaters of the Little Colorado, Black, and White rivers in east-central Arizona. Decline of Apache trout to threatened status was attributed to over-fishing, habitat degradation and negative interactions (predation, competition and hybridization) with introduced nonnative salmonids. Although over-fishing is no longer considered a threat, habitat degradation and negative interactions with nonnative salmonids continue to threaten Apache trout, and it is towards these threats that recovery actions are directed. While barrier construction began in 1979 and livestock exclusion began in the mid-1980s, the efficacy of these recovery actions at increasing Apache trout abundance and improving habitat condition had not been evaluated. We therefore initiated a study to evaluate the efficacy of riparian fencing and barriers.

This project consisted of multiple activities: Fish salvage, fish holding and repatriation, stream renovation, fish barrier construction and watershed stock tank renovations. Fish salvage and restocking operations were done in coordination and in conjunction with USFWS and a larger research project being conducted by NAU through separate funding. Brief information on methods and results from those efforts are provided. The Department, utilizing resources provided directly by USBR and via a grant from the FWS, implemented holding facility construction and operation. The Department coordinated the stream renovation with planning and implementation assistance provided by all the aforementioned partners. The USBR conducted all activities related to the fish barrier design and construction, details of which will not be included in this report.