Bridge Reference Number (BRN)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

Name

bridgeReferenceNumber

Datatype

KeyNonLex24

Definition

The unique identifier of a bridge in accordance with the provisions of terrain analysis databases (for example: PTADB or TTADB).

Description

The identifier is assigned consecutively (for example: within a map sheet or within a local area of interest) and begins with the northwest grid square of the UTM reference system and proceeds from left to right to the east edge of the sheet or area, continuing consecutively in the same way starting back at the west edge of the next line of UTM grid squares below those previously completed. The resulting identifiers are used to index an associated Bridge Information Table.

Accepted

2013-10-18

Defined by

DFDD

Used by

AQ040 Bridge
AQ045 Bridge Span
AQ050 Bridge Superstructure
AQ055 Bridge Tower