BRIDGES
Status: Obtained in 1995
SOURCE/CONVERSION METHODOLOGY
This data layer is from Boston Edison Company (BECo.). The original aerial photography was flown between 1990 and 1991 at 1" =600’ negative scale. Digital planmetric data meets National Map Accuracy Standards for 1"=100’ mapping.
COVERAGE NAME
BRDG
FEATURE TYPE
ARCS
ATTRIBUTES
Feature Attribute Table Organization:
| Col | Description | Item name | Width | Output Width | Type* | No. of Dec. | Alt. name |
Indexed? |
| 1 | ARC/INFO | FNODE# | 4 | 5 | B | |||
| 5 | INTERNAL | TNODE# | 4 | 5 | B | |||
| 9 | ITEMS | LPOLY# | 4 | 5 | B | |||
| 13 | | | RPOLY# | 4 | 5 | B | |||
| 17 | | | LENGTH | 8 | 18 | F | 5 | ||
| 25 | | | BOS# | 4 | 5 | B | |||
| 29 | | | BOS-ID | 4 | 5 | B | |||
| 33 | BECo. SERVER ID | SERVER-ID | 4 | 5 | B | |||
| 37 | BECo. TILE ID | TILE-ID | 4 | 5 | B | |||
| 41 | BECo. FEATURE CLASS |
MAJOR1 | 6 | 6 | I | |||
| 47 | BECo. SYMBOL CODE |
MINOR1 | 6 | 6 | I |
* See Appendix G for detail
COORDINATE SYSTEM
Massachusetts State Plane North America Datum (NAD) 83 Feet