A11 Primary road with limited access or interstate highway, unseparated A12 Primary road with limited access or interstate highway, unseparated, in tunnel A13 Primary road with limited access or interstate highway, unseparated, underpassing A14 Primary road with limited access or interstate highway, unseparated, with rail line in center A15 Primary road with limited access or interstate highway, separated A16 Primary road with limited access or interstate highway, separated, in tunnel A17 Primary road with limited access or interstate highway, separated, underpassing A18 Primary road with limited access or interstate highway, separated, with rail line in center A21 Primary road without limited access, US highways, unseparated A22 Primary road without limited access, US highways, unseparated, in tunnel A23 Primary road without limited access, US highways, unseparated, underpassing A24 Primary road without limited access, US highways, unseparated, with rail line in center A25 Primary road without limited access, US highways, separated A26 Primary road without limited access, US highways, separated, in tunnel A27 Primary road without limited access, US highways, separated, underpassing A28 Primary road without limited access, US highways, separated, with rail line in center A31 Secondary and connecting road, state highways, unseparated A32 Secondary and connecting road, state highways, unseparated, in tunnel A33 Secondary and connecting road, state highways, unseparated, underpassing A34 Secondary and connecting road, state highways, unseparated, with rail line in center A35 Secondary and connecting road, state highways, separated A36 Secondary and connecting road, state highways, separated, in tunnel A37 Secondary and connecting road, state and county highways, separated, underpassing A38 Secondary and connecting road, state and county highway, separated, with rail line in center A41 Local, neighborhood, and rural road, city street, unseparated A42 Local, neighborhood, and rural road, city street, unseparated, in tunnel A43 Local, neighborhood, and rural road, city street, unseparated, underpassing A44 Local, neighborhood, and rural road, city street, unseparated, with rail line in center A45 Local, neighborhood, and rural road, city street, separated A46 Local, neighborhood, and rural road, city street, separated, in tunnel A47 Local, neighborhood, and rural road, city street, separated, underpassing A48 Local, neighborhood, and rural road, city street, separated, with rail line in center A51 Vehicular trail, road passable only by 4WD vehicle, unseparated A52 Vehicular trail, road passable only by 4WD vehicle, unseparated, in tunnel A53 Vehicular trail, road passable only by 4WD vehicle, unseparated, underpassing A60 Special road feature, major category used when the minor category could not be determined A61 Cul-de-sac, the closed end of a road that forms a loop or turn-around A62 Traffic circle, the portion of a road or intersection of roads forming a roundabout A63 Access ramp, the portion of a road that forms a cloverleaf or limited-access interchange A64 Service drive, the road or portion of a road that provides access to businesses, facilities, and rest areas along a limited-access highway; this frontage road may intersect other roads and be named A65 Ferry crossing, the representation of a route over water that connects roads on opposite shores; used by ships carrying automobiles or people A70 Other thoroughfare, major category used when the minor category could not be determined A71 Walkway or trail for pedestrians, usually unnamed A72 Stairway, stepped road for pedestrians, usually unnamed A73 Alley, road for service vehicles, usually unnamed, located at the rear of buildings and property A74 Driveway or service road, usually privately owned and unnamed, used as access to residences, trailer parks, and apartment complexes, or as access to logging areas, oil rigs, ranches, farms, and park lands B11 Railroad main track, not in tunnel or underpassing B12 Railroad main track, in tunnel B13 Railroad main track, underpassing B21 Railroad spur track, not in tunnel or underpassing B22 Railroad spur track, in tunnel B23 Railroad spur track, underpassing B31 Railroad yard track, not in tunnel or underpassing B32 Railroad yard track, in tunnel B33 Railroad yard track, underpassing B40 Railroad ferry crossing, the representation of a route over water used by ships carrying train cars to connecting railroads on opposite shores. These are primarily located on the Great Lakes. B50 Other rail line; major category used alone when the minor category could not be determined B51 Carline, a track for streetcars, trolleys, and other mass transit rail systems; used when the carline is not part of the road right-of-way B52 Cog railroad, incline railway, or logging tram C00 Miscellaneous ground transportation, not road or railroad; major and minor categories unknown C10 Pipeline; major category used alone C20 Power transmission line; major category used alone C30 Other ground transportation that is not a pipeline or a power transmission line; major category used alone when minor category could not be determined C31 Aerial tramway, monorail, or ski lift D00 Landmark; major and minor categories unknown D10 Military installation or reservation; major category used alone D20 Multihousehold or transient quarters; major category used alone when the minor category could not be determined D21 Apartment building or complex D22 Rooming or boarding house D23 Trailer court or mobile home park D24 Marina D25 Crew-of-vessel area D26 Housing facility for workers D27 Hotel, motel, resort, spa, hostel, YMCA, or YWCA D28 Campground D29 Shelter or mission D30 Custodial facility; major category used alone when the minor category could not be determined D31 Hospital D32 Halfway house D33 Nursing home, retirement home, or home for the aged D34 County home or poor farm D35 Orphanage D36 Jail or detention center D37 Federal penitentiary, state prison, or prison farm D40 Educational or religious institution; major category used alone when the minor category could not be determined D41 Sorority or fraternity D42 Convent or monastery D43 Educational institution, including academy, school, college, and university D44 Religious institution, including church, synagogue, seminary, temple, and mosque D50 Transportation terminal; major category used alone when the minor category could not be determined D51 Airport or airfield D52 Train station D53 Bus terminal D54 Marine terminal D55 Seaplane anchorage D57 Airport.Statistical Representation used as part of urban area delineation where major airports are contiguous with urban areas D60 Employment center; major category used alone when the minor category could not be determined D61 Shopping center or major retail center D62 Industrial building or industrial park D63 Office building or office park D64 Amusement center D65 Government center D66 Other employment center D70 Tower; major category used alone when minor category could not be determined D71 Lookout tower D80 Open space; major category used alone when the minor category could not be determined D81 Golf course D82 Cemetery D83 National Park Service land D84 National forest or other Federal land D85 State or local park or forest D90 Special purpose landmark; major category used alone when the minor category could not be determined D91 Post office D92 Urbanizacion, an identifiable community development in Puerto Rico D93 Fire Department D94 Police Station D95 Library D96 City/Town Hall E00 Physical feature, tangible but not transportation or hydrographic; major and minor categories unknown E10 Fence line locating a visible and permanent fence between separately identified property E20 Topographic feature; major category used when the minor category could not be determined E21 Ridge line, the line of highest elevation of a linear mountain E22 Mountain peak, the point of highest elevation of a mountain E23 Island, identified by name E24 Levee, an embankment, as of earth or concrete, used to prevent a river or other body of water from overflowing F00 Nonvisible boundary; major and minor categories unknown F10 Nonvisible jurisdictional boundary of a legal or administrative entity F11 Offset boundary of a legal entity F12 Corridor boundary of a legal entity F13 Nonvisible superseded 2000 governmental unit boundary F14 Superseded 1990 legal boundary F15 Superseded 1990 legal boundary, corrected through post census process F16 Superseded legal boundary, current at the time of the 1997 Economic Census F17 Nonvisible State Legislative District boundary F18 Nonvisible Congressional District boundary F19 Nonvisible corrected 2000 governmental unit boundary F20 Nonvisible feature for database topology; major category used when the minor category could not be determined F21 Automated feature extension to lengthen existing physical feature F22 Irregular feature extension, determined manually, to lengthen existing physical feature F23 Closure extension to complete database topological closure between extremely close features (used to close small gaps between complete chains and create polygons to improve block labeling on cartographic products) F24 Nonvisible separation line used with offset and corridor boundaries F25 Nonvisible centerline of area enclosed by corridor boundary F30 Point-to-point line, follows a line of sight and should not cross any visible feature; for example, from the end of a road to a mountain peak F40 Property line, nonvisible boundary of either public or private lands, e.g., a park boundary F50 ZIP Code® tabulation boundary, used in delineating ZIP Code® Tabulation Areas F70 Statistical boundary; major category used when the minor category could not be determined F71 1980 statistical boundary F72 1990 statistical boundary; used to hold 1990 collection and tabulation census block boundaries not represented by existing physical features F73 Internal U.S. Census Bureau use F74 1990 statistical boundary; used to hold a 1990 tabulation census block boundary not represented by an existing physical feature F80 Nonvisible other tabulation boundary; major category used when the minor category could not be determined F81 School district boundary F82 Internal U.S. Census Bureau use F83 Census 2000 collection block boundary; used to hold Census 2000 collection block boundaries not represented by existing physical features F84 Census 2000 statistical area boundary; used to hold Census 2000 statistical area boundaries not represented by existing physical features F85 Census 2000 tabulation block boundary; used to hold Census 2000 tabulation block boundaries not represented by existing physical features F86 Internal U.S. Census Bureau use F87 Oregon urban growth area boundary F88 Current statistical area boundary H00 Water feature, classification unknown or not elsewhere classified H01 Shoreline of perennial water feature H02 Shoreline of intermittent water feature H11 Perennial stream or river H12 Intermittent stream, river, or wash H13 Braided stream or river H21 Perennial canal, ditch, or aqueduct H22 Intermittent canal, ditch, or aqueduct H30 Lake or pond; major category used when the minor category could not be determined H31 Perennial lake or pond H32 Intermittent lake or pond H40 Reservoir; major category used when the minor category could not be determined H41 Perennial reservoir H42 Intermittent reservoir H50 Bay, estuary, gulf, sound, sea, or ocean; major category used when the minor category could not be determined H51 Bay, estuary, gulf, or sound H53 Sea or ocean H60 Gravel pit or quarry filled with water H70 Nonvisible water area definition boundary; used to separate named water areas and as the major category when the minor category could not be determined H71 USGS closure line; used as a maritime shoreline H72 Census water center line; computed to use as a median positional boundary H73 Census water boundary, international in waterways or at 10-mile limit; used as an area measurement line H74 Census water boundary separating inland from coastal or Great Lakes; used as an area measurement line H75 Census water boundary separating coastal water from territorial sea at the 3-mile limit; used as an area measurement line H80 Special water feature; major category used when the minor category could not be determined H81 Glacier P Provisional (not yet verified) X00 Feature not yet classified