English: Surveyors using Leica Geosystems GST20 (TS15) Total Station on tripods and Prism Constant GPR111 at Calumpit railway station construction sites Calumpit station - Calumpit railway station construction sites (Iba O'Este) - Remnants of the abandoned Calumpit Station - Labangan (Iba O'Este) Railway Bridges 1 and 2, Manila Railroad Company in Boundary Barangays Corazon, Caniogan and Iba O'Este, Calumpit (along Calumpit River (Rio Grande de Angat) Manila North Road or MacArthur Highway - in front of the newly rehabilitated, replaced and widened 7 Category:Labangan Bridges (Calumpit, Bulacan) (The Labangan Railway Bridge (Calumpit) spans the Rio Grande de Angat, or Calumpit River - the bridges were erected in c.1887 made of metal lattice work and Apalit or red bricks and previously decorated with cast iron moldings in its approach).