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NYS ITS GIS Program Office

Geographic Information Systems Clearinghouse

Requirements to Map Thruway Databases in GIS

January 15, 2001


As an alternative to the bi-directional Thruway Authority Linear Reference System, Thruway databases may be mapped using only a centerline representation of the Thruway's roads, disregarding the directional component. To do this, the database requirements are basically the same, but only the seven road abbreviations are used, without the directional component. The values would be as follows:

Name

Abbreviation

("route" field)

From Milepost

To Milepost

(for linear data)

Mainline

ML

0.00

496.00

I-84

84

500.00

571.51

New England Section

NE

600.00

615.00

Cross Westchester Expressway

CW

620.00

630.90

Garden State Parkway Connector

GS

640.00

642.40

Berkshire Spur

B

800.00

824.27

Niagara Section

N

900.00

921.21