Bridge Numbers

[GNRi1959]

Is there anything in print showing GNR(I) bridges and bridge numbers?

[jhb171achill]

3 hours ago, GNRi1959 said:

Is there anything in print showing GNR(I) bridges and bridge numbers?

Bridge styles vary enormously on the GNR, with Dublin & Drogheda ones, solid INWR types, and even some surviving Ulster Railway sandstone. The two at Lambeg are, I think, the oldest surviving railway bridges in Ireland in original condition. 
 

GNR(I) bridge plates were oval.

[seagoebox]

The Public Record Office in Belfast has (had?) the GNR(I) bridge books for their area.

[airfixfan]

Will search for that next day I am.in PRONI

[GNRi1959]

My query is related to bridges crossing the Derry Road within a 5miles radius of Omagh, thank you