Bridges of Carpinteira, Corges, Maçaínhas, Penha Barroca, Gogos e Zêzere II. The first five bridges have box girder decks, with span lengths from 40m up to 48m and total lengths from 104m up to 220m. The bridge over the River Zêzere (II) has a total length of 136m and a central span length of 60m. This bridge has a beam-and-slab deck with inverted beams and a “bow-string” type solution in the central span. Services Provided: Preliminary Study and Final Design. Owner: REFER, EPE. Cost Estimate: 9 600 000 €.