Roads and Highways CONCESSION of MOTORWAY
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TRANSPORTATION INFRASTRUCTURES Roads and Highways CONCESSION OF MOTORWAY SECTIONS - BEIRA INTERIOR REGION PORTUGAL TECHNICAL DATA: 132 km of Motorway Sections: CONCESSION OF Guarda / Teixoso (33 km); Mouriscas / Gardete (29 km); MOTORWAY SECTIONS AND Alcaria / Teixoso (Belmonte) (20 km); Gardete / Castelo Branco (46 km); Doubling ASSOCIATED ROADS IN THE of the Gardunha Tunnel (3 km); Tunnels: Ramela (2 x 265 m) Barracão (2 x 325 m) BEIRA INTERIOR REGION, UNDER DBFO. SHORT DESCRIPTION: After being the lead Designer of the Client: ACESTRADA - Preliminary Design for the DBFO tender, in Construção de Estradas, 1998, with an involvement of about 75%, ACE (Group of Contractors) COBA is presently the Designer of all the motorway sections and provides Technical Assistance to the Construction Works, with an involvement of 100%. Preliminary Design for a DBFO Tender: The works consist of: earthworks (layout, 1998 interchanges, re-locations, geology and Geotechnics); drainage, pavement; Final Design and Technical accessory works (landscaping and Assistance to the Works: environmental impact assessment, fences, 1999/03 retaining structures, affected services, telecommunications, safety and signalling Investment Cost: equipment); bridges and viaducts; tunnels, 520.000.000,00 Euro assistance and maintenance centres, service areas, health and safety plans. ENGINEERING AND ENVIRONMENTAL CONSULTANTS TRANSPORTATION INFRASTRUCTURES Roads and Highways A2 – SECTION BETWEEN GOMES AIRES AND S. BARTOLOMEU DE MESSINES PORTUGAL TECHNICAL DATA: A2 SOUTHERN MOTORWAY - 27,876 km length - 13 rural roads SECTION BETWEEN - 22 viaducts with lengths between 47 m and 766 m GOMES AIRES and - Design speed: 120 km/h S. BARTOLOMEU DE - Typical cross-section: MESSINES - Double lane: 2 x 2 lanes x 3,75 m and a 11,50 m central reserve – since km 0,0 to km 5,6 and from km 21,0 until the end - Triple lane: 2 x 3 lanes x 3,75 m and a 4 m central reserve, limited by Client: flexible guard-rails – from km 5,6 to km 21,0 BRISA – Auto-estradas de - Two 1,00 m wide left shoulders Portugal, S.A. (Motorway - Two 3,0 or 3,75 m wide right shoulders Concessionaire) DESCRIPTION: Feasibility Study: Subsection Almodôvar – S. Bartolomeu de Messines is integrated in the A2 – 1998 Southern Motorway, which connects Lisbon to the Algarve. It begins shortly after the Almodôvar Interchange, to the West of Gomes Aires, crosses the entire Preliminary Study: Caldeirão Mountain Range, and ends after crossing the Gavião River, which lies to 1999 the East of S. Bartolomeu de Messines. Final Design: Special reference is made to the topographical difficulties encountered in the zone 1999/2000 set out for the alignment, which lead to the design of 22 viaducts and a longitudinal profile that resorted to gradients with longitudinal declivities larger than 3% and Technical Assistance: longer than 420 m. In these areas (since approximately km 5,6 to km 21,0) three 2000/2002 traffic lanes in each direction were provided for, which resulted from an analysis carried out for implementation of additional climbing lanes. Investment Cost: 75.00.000,00 Euro (excluding Viaducts) ENGINEERING AND ENVIRONMENTAL CONSULTANTS TRANSPORTATION INFRASTRUCTURES Roads and Highways IC17-CRIL – BURACA – PONTINHA SECTION PORTUGAL TECHNICAL DATA: - 3,4 km long IC17 – CRIL - 1 tunnel 280 m long with two independent galleries spaced 8 m LISBON INNER HIGHWAY - 2 cut-and-cover tunnels - 15 over and underpasses BURACA - PONTINHA - 5 multi-level interchanges, two of them in the linking of the CRIL to the SECTION Benfica Interchange - Design speed: 80 km/h - Typical cross-section: 1,7 – 13,5 – 1,0 – 0,6 – 1,0 – 13,5 – 1,7 DESCRIPTION: CLIENT: JAE - Junta Autónoma de The CRIL – Lisbon Inner Highway is one of the major roads for the road traffic Estradas flowing from Lisbon that links Algés (near the Tagus river) to the Northern Motorway and to the New Vasco da Gama Bridge over the Tagus River. (Portuguese Roads Authority) The layout initially foreseen for the Buraca–Pontinha section has been largely occupied by residential buildings and houses, in their majority clandestine residences, this before the beginning of the first final design in 1989. For that reason, the definition of the layouts has always been very difficult, thus resulting in 1st Final Design: the need to carry out three final designs. 1989/91 The Buraca interchange has also been constructed, with the special technical nd assistance from COBA, this having implied, during the construction phase, the 2 Final Design: improvement and modification to the 1st design, given decisions meanwhile taken 1993/94 by the Government. Technical Assistance (Buraca Interchange): 1991/94 3rd Final Design: 1995/2000 Technical Assistance: 1996/2003 Investment Cost: 60.000.000,00 Euro Buraca Interchange ENGINEERING AND ENVIRONMENTAL CONSULTANTS TRANSPORTATION INFRASTRUCTURES Roads and Highways IP3 – SECTION RÉGUA-RECONCOS PORTUGAL TECHNICAL DATA - 25 km long IP3 - 3 interchanges Therefore, rather complex and - 2 level crossings innovating solutions have to be VILA REAL – RECONCOS - 12 special engineering structures adopted over 3 km. In addition to the - 2 viaducts (130 m and 120 m) viaducts, bridges and tunnels, given SECTION RÉGUA-RECONCOS - 3 bridges (880 m, 460 m and 430 m) the very steep slopes of the Corgo and - 2 tunnels (one with 2 galleries with Varosa valley, where a major part of 380 m and 300 m and one with a the road develops, high retaining simple gallery with 270 m long) structures were adopted to stabilise Client: - 15 relocations excavation or embankment slopes or Junta Autónoma de Estradas - design speed: 80 km/h the unlevelling of the carriageways. (JAE) - typical profile double carriage way (2 For a better insertion of the road at the (Highway Authority) x 2 lanes) : 2,5 - 7,0 - 1,0 - 3,0 - 1,0 - mid-slope, in addition to the 7,0 - 2,5 carriageways unlevelling, very high It is a section of the Trunk Road IP3 mixed gabion rockfill/embankment between Régua and Reconcos, about solutions were adopted. The difference Final Design: 10 km from Lamego in the North of of levels between the slope base and the top reach sometimes about 40 m. 1993/95 Portugal. The section develops on a very hilly Emphasis is also placed on the Technical Assistance: region with the deep valleys of the complexity of the interchanges that, 1996/99 Douro river and their tributaries, Corgo owing to the difficult topography, did and Varosa rivers, and as well the not follow the classic method, namely Balsemão river, tributary of the Varosa the Valdigem interchange nearby the the south abutment of the bridge over river. the Varosa river, Investment Cost: This fact, combined with the 58.000.000,00 Euro agricultural occupation of the lands (it is the Douro and Varosa vineyard area), made the road alignment particularly difficult). ENGINEERING AND ENVIRONMENTAL CONSULTANTS TRANSPORTATION INFRASTRUCTURES Roads and Highways REHABILITATION OF THE ROAD NETWORK IN THE LUANDA AREA ANGOLA OBJECTIVE The engineering studies included: REHABILITATION OF THE ROAD NETWORK IN THE Preparation of the engineering studies, - Geology and geotechnics LUANDA AREA traffic and economic analysis as well - Drainage (about 117 km) as the Tender Documents for the - Pavement reinforcement construction works. - Rehabilitation of bridges CLIENT: SUMMARY DESCRIPTION The project mobilized a team of INEA - Instituto Nacional de specialists who, during some months, Estradas de Angola The project comprises the assessed “in situ” the roads and rehabilitation of four sections of bridges. This team also supervised Final Design: asphalt roads totaling about 117 km: the execution of Benkelman deflexion 1996/97 Luanda-Barra do Kwanza, Luanda- tests, DCP tests and the necessary Viana, Viana-Catete and Catete- laboratory tests for the studies of the Kifangondo. pavement reinforcement. Supervision of Sections: Luanda – Viana and The sections are in a very degraded COBA was in charge of all the Luanda – Barra do Kwanza: state, due to the lack of maintenance engineering studies as well as the 1998/01 and also due to the heavy traffic in tests undertaken with the support of densely populated areas with great the technicians and equipment of the Financing: problems associated to geological and Engineering Laboratory of Angola. World Bank drainage aspects.The rehabilitation . consists, on the one hand, on the total reconstruction of some sections and, Studies undertaken in on the other hand, on the pavement association reinforcement with asphalt concrete. Investment Cost: 17.500.000,00 Euro ENGINEERING AND ENVIRONMENTAL CONSULTANTS TRANSPORTATION INFRASTRUCTURES Roads and Highways OKOYO/LEKETY/GABON BORDER ROAD AND BRIDGES IN THE AMPAKA/LEKANA/LEKETY ROAD AXIS REPUBLIC OF CONGO TECHNICAL DATA: OKOYO/LEKETY/GABON • Typical section 89 km long BORDER ROAD AND • Road links of bridges in the Lekana/Ampaka/Lekety axis about 5 km long BRIDGES IN THE • 2 roundabouts AMPAKA/LEKANA/LEKETY • Earthfill for the access in a marshland area ROAD AXIS • Road links to the Okoyo and Lekety Harbour • 9 bridges • Design speed: 80 km/h • Typical cross sections: 1– 7 – 1 Client: ESCOM – Espírito The study has consisted in the preparation of pre-detailed designs for the road Santo Commerce / Ministry of study of the section Okoyo/Lekety/Gabon Border and of the bridges in the road Equipment and Public Works axis Lekana/Ampaka/Lekety. The present section is part of the major road network of the country, and it will Final Design: represent a privileged linking with the Republic of Gabon. 2001/02 Besides the bridges for crossing medium and large rivers, the study also covered several box-culvert type culverts. The design comprised the studies of the following specialities: - Layout geometry; - Hydrology/Drainage; - Geology/Geotechnics; - Pavement study; - Roundabouts; - Road Signing and Safety equipment; - Provisional Traffic Deviations. Given the non-existence of small-scale mapping for supporting the hydraulic and drainage studies, remote control detection methods have been used, and more precisely the satellite radar covering of the surrounding area of the road.