Figure 1-1 - Urban and Rural Roadway Mileage by Surface Type:1950-97
Monday, September 10, 2012
Figure 1-1 - Urban and Rural Roadway Mileage by Surface Type:1950-97

KEY: P = preliminary.
SOURCES: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual editions), table HM.
______. Highway Statistics Summary to 1995 (Washington, DC: 1997), table HM-212.