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DIAMOND IN THE COPPER STATE
| 题名： | DIAMOND IN THE COPPER STATE |
| 正文语种： | eng |
| 摘要： | Thanks to a diverging diamond interchange (DDI), this project in Tucson, Arizona increased the daily capacity of traffic from 8,000 vehicles a day to 50,000. The $24.4 million interchange, the first DDI in southern Arizona and the second in the state, replaced a 50-year-old outdated two-lane bridge, which lacked separate left turn lanes and had caused extensive delays during peak hour traffic. The DDI was selected by the Arizona Department of Transportation because fewer conflict points, particularly in left turn movements, make it one of the safest options. It also had lower construction costs, lower right-of-way impacts, the highest traffic accommodation and was enthusiastically supported by the public. This project was one of the early submissions we received, and we were so impressed that we wrote about it in September to promote these awards. |
| 出版年： | 2022 |
| 期刊名称： | Roads & bridges |
| 卷： | 60 |
| 期： | 9 |
| 页码： | 48-49 |
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