File: ..\gis1\roads\T65urdsp.shp

Description: Humboldt County's Roads Centerline Dataset.

Creation Date: March 1998

Produced By: Tom Hofweber

Data Type: Line Shapefile

Projection: CA State Plane Zone 1

Datum: North American Datum 1927

Starting Product and Date: T63urdsp - Arc Coverage March 1998

Original Data Source: Census Tiger Files

Original Data Scale: 1:100,000

Updates/History/Corrections: Numerous updates and corrections made 
to linework using scanned and rectified USGS 7.5' Quads (1995-1998).  
Attribute updating and checks were done using multiple sources.  
Most recent update (April 2001) used USGS 3.75' Digital Orthophoto 
Quarter Quads to correct linework for selected roads.  
For some areas, linework was corrected based on feedback from Local 
Fire Departments.  Linework was corrected to match USGS DOQQ's - 2004 & 2005.  
[Altname] was added as an attribute which contains corrected road names based 
of feedback from Fire Departments. 

Attribute updates were done 4-15-02.  Functional classification (funclass) 
was updated using Caltrans Func roadway dataset.  Other attributes from the 
Func dataset were also added and populated.


DOTFUNCCL: Item used to describe functional classification system
0 Not Functionally Classified
1 = Rural Principal Arterial-Interstate (PAI)
2 = Rural Other Principal Arterial (OPA)
6 = Rural Minor Arterial (MA)
7 = Rural Major Collector (MJC)
8 = Rural Minor Collector (MNC)
11 = Urban Principal Arterial – Interstate (PAI)
12 = Urban Principal Arterial/Other Fwys or Expwys (OFE)
14 = Urban Other Principal Arterial (OPA)
16 = Urban Minor Arterial (MA)
17 = Urban Collector (COL)

TRKRT: Item used to define National Truck Network
0 = Not part of the National Truck Network
1 = National Network for STAA Trucks
2 = Terminal Access Routes to the National Network
3 = Routes for Tractor-Semis with Kingpin to Rear Axle Length < 30 Ft.
4 = Routes for Tractor-Semis with Kingpin to Rear Axle Length 30 Ft.
5 = Routes for Tractor-Semis with Kingpin to Rear Axle Length 32 Ft.
6 = Routes for Tractor-Semis with Kingpin to Rear Axle Length 34 Ft.
7 = Routes for Tractor-Semis with Kingpin to Rear Axle Length 36 Ft.
8 = Routes for Tractor-Semis with Kingpin to Rear Axle Length 38 Ft.
9 = Routes for Tractor-Semis with 65-Foot Overall length and 40-Foot Kingpin to Rear
Axle Length (CA LEGAL)
10 = Routes with Operational Restrictions

STRAHNET: Item defining Strategic Highway Network (STRAHNET) or STRAHNET Connectors
0 = Not STRAHNET
1 = STRAHNET route

NHS: Item used to define road systems that are part of a National Highway System
0 = Not part of a National Highway System
1 = Eisenhower Interstate System
2 = Congressional High Priority Route
3 = STRAHNET Route
4 = STRAHNET Major Connector
5 = Other NHS Route
6 = Congressional High Priority Route and STRAHNET Major Connector
7 = NHS Connector (proposed NHS connectors) 

SCENIC: Item used to define a State Highway that is designated as a Scenic Highway
0 = Not a Scenic Highway
1 = Officially designated as a State Scenic Highway
2 = Eligible to become a State Scenic Highway
3 = Unconstructed State Highway eligible for Scenic designation
4 = Officially designated County Scenic Highway
5 = Connecting Federal Highway (Inside National Parks)
6 = Officially designated Historic Parkway


Accuracy: 1:100,000 to 1:24,000

Warning/Data Limitations: Data has numerous spatial inaccuracies as well as missing attribute values.

Comments: Should be used as a general guide to Road Features for Humboldt County.

Contact Info:
Chinmaya Lewis or Tom Howfweber
Humboldt County Planning
3015 H St. 
Eureka, CA 95501
707-268-3737
E-mail:  clewis@co.humboldt.ca.us