<u>The correct answer is D. 350,000 miles.</u>
<u>Description: According to US Forest Service statistics, there are five components of the extensive and diverse Forest Services roads system:</u>
- <em><u> Approximately 22 percent of all Forest Service roads </u></em>serve passenger car use.
- <em><u>Over 55 percent of all Forest Service roads</u></em> are maintained for high-clearance vehicle use.
- <em><u>Around 23 percent of all Forest Service roads are closed to highway use by the public</u></em>. Closed roads may be used for recreation uses, and for forest administration and protection.
- <em><u>Right now, Forest Service has identified at least 60,000 miles of unclassified roads </u></em>including temporary roads and roads that were never planned, built, or maintained to safety, service, and environmental standards. Probably there are substantially more miles of unclassified roads.
- <em><u>More than 7,000 bridges on Forest Service roads exist;</u></em> 5,200 are on the roads serving passenger car use.
