Road works
iron Bridge, Rome
Following the fire that broke out on the night between October 2 and 3, 2021, the Ponte dell'Industria—a key infrastructure hub connecting the Portuense and Ostiense neighborhoods—reported serious structural damage.
The original project involved widening the roadway to allow public transport transit and building a lateral walkway on the north side for pedestrians.
During the executive design phase, however, further improvement requirements emerged that had not been addressed in the preliminary phase. Specifically, it was necessary to increase the roadway cross-section, provide for the construction of two lateral walkways—one for pedestrians and one for bicycles—and proceed with the conservative restoration of the bridge's historic arches, given the historical and architectural value of the existing structure. These historic elements will be repositioned on the new structure to maintain the original architectural signature.
The bridge in its final configuration will provide the historical truss beams relaunched and sustained by the new structural deck previously completed and opened to traffic since march 2025; the retrofitted bridge now carries a 7.5m wide road platform with two lateral cycle/pedestrian walkways of 2.2m each.
CABLE-STAYED BRIDGE ON THE SANGONE TORRENT (Giaveno - Turin - Italy)
Following the flood event that occurred in the Province of Turin in October 2000, the existing masonry bridge over the Sangone torrent, located in the Municipality of Giaveno along the Provincial Road No. 193 "della Colletta", suffered serious damages, with the collapse of a pier and two decks and the consequent interruption of the road network between the Municipalities of Giaveno and Cumiana. As part of the post-flood reconstruction project, the Province of Turin Administration has awarded the Temporary Association of companies Geodata - Mario Petrangeli & Ass.ti - Tecma the assignment for the executive design of the new bridge.
A24 - A25 VOMANO AND SANT'ANTONIO VIADUCTS Doubling of the A24 highway Rome - L'Aquila - Teramo section Villa Vomano - Teramo
The project includes, for the new East carriageway heading towards Teramo, the S. Antonio and Vomano viaducts with a continuous steel-concrete beam on 70m spans, for a total of 3200m, with box-type piers and foundations on piles or wells of diameter 10m. The design of the Carestia tunnel of about 800m in length and numerous defense works with multi-armored bulkheads over 10m in height are also included. Among the works, the Saint Antonio viaduct is the most important work not only from an economic point of view, but also as far as technical and realization aspects are concerned. It consists of 72 spans approximately 35m long with decks consisting of 2 precast beams with continuous slab in place. The essential aspects, in addition to those mentioned above, are related to the study of the foundations of this viaduct. The infrastructure in the section in question, is affected by many unstable slopes; this circumstance induced the designers of the existing viaduct, 20 years ago, to use wells for all the piers. In our case, a careful study of the geomorphology of the territory has led to a differentiation of the types of foundation, so that more economic pile foundations (φ1500) could be chosen for the valley floor areas.
GRAND HOTEL AND MDEIREJ VIADUCTS ON BEIRUT - DAMASCUS HIGHWAY (Beirut - Lebanon)
The works in question are part of the highway connection between the capitals of Lebanon and Syria. Beirut and Damascus, separated by the mountain range of the Antilibano that runs parallel to the coast and encloses the green valley of the Beeka, are only 70km away as the crow flies. The section from Damascus to the Syrian border was already operative while the Lebanese government contracted in 1997 a first lot of motorway, 4.5km long, connecting Saoufar, eastern suburb of Beirut, to Mdeirej, the pass at an altitude of 1400m. The international tender was won by the Italian company TOTO SpA which turned to the writers for the project of major works of art, consisting of two viaducts in PRC named later as "Grand Hotel" and "Mdeirej". In September 2001 the viaducts were completed and tested, ready to be opened to traffic. For the design of the works in question, the French standards was followed, integrated, with regard to seismic actions, by Eurocode 8 Part 2 (Bridges).
SS 16 ADRIATICA EXTERNAL VARIANT AT MONTESILVANO AND MARINA IN CITTÀ SANT'ANGELO (Montesilvano - Pescara - Italy)
The project concerns the detailed and constructive design of a section of the Adriatic SS16 in variant to the towns of Montesilvano and Marina di Città S. Angelo in the province of Pescara. The executive planning dealt with the road design of the variant according to Type IV CNR80, the design of the two junctions of Montesilvano and of S. Filomena, the natural gallery of about 1660m in length, the artificial tunnels included in the stretch, the Mazzocco bridge with arch structure of span 70m consisting of 5 ribs arranged at interaxis distance 3.75m.
BRIDGE OVER THE TICINO RIVER IN THE MUNICIPALITY OF VIGEVANO
Detailed and construction design of the new bridge over the Ticino River in the Municipality of Vigevano. General contractor the province of Pavia. The work extends for a length of about 500m and is composed of two consecutive arches of length 150m and two viaducts of approach of about 100m each. The two arches are of the through type with a prestressed reinforced concrete deck hung with 12 hangers to the two arches. The latter are made of a steel-concrete mixed structure with a hexagonal section of variable dimensions. The most important design intervention in variant to the tender based project was the introduction of tie rods to eliminate the thrust of the arc in the longitudinal direction made with four stays of 55 strands per side. In order to further reduce the foundation stresses, tie rods were also introduced in the transverse direction to reduce the thrust produced by the inclination of the two arches.
CABLE-STAYED BRIDGE ON THE WADI DIB (Constantine - Algeria)
The cable-stayed bridge on the Wadi Dib was designed during the three-year period 1990/93 on behalf of GI.CO. Costruzioni SpA. Prof. MP Petrangeli was in charge of all the phases of design of the work, from the first preliminary studies aimed to the definition of the architectural and structural typology to the design for construction and the technical assistance in the construction phase. The bridge crosses the Dib valley in a mountainous area near Constantine in Algeria. The valley has been then submerged by an artificial lake after the construction of a dam, which was under construction in close proximity of the bridge during the realization of the bridge itself.
