The Bridges of Porto -
Technical Data
Manuel de Azeredo
Suspended B. | Maria Pia B. | Luís I B. | Arrábida B. | S.João B. | Freixo B. |
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Description |
Road Bridge crossing Douro River at Porto, Portugal (Now demolished) |
Type of Construction |
Metalic cables (iron laminated parallel wires); Wood deck; Masonry towers |
Structural type |
Suspended. 8 parallel cables (4+4) |
Designer |
Stanislas Bigot (Civil Engineer) |
Constructor |
Soc. Clarenges-Lucotte |
Contract aspects |
|
Beginning of Construction |
February 2, 1841 |
Inaugurated |
February 17,1843 |
Overall Length |
|
Span |
170 m |
Heigth (over the water level) |
10.0 m |
Deck width |
6.0 m |
Total amount of iron |
|
Cost |
|
Images |
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Description |
Railway Bridge crossing Douro River at Porto, Portugal |
Type of Construction |
Metalic |
Structural type |
Double hinged arch |
Designer |
Théophile Seyrig and Gustave Eiffel |
Constructor |
G. Eiffel & Co. |
Contract aspects |
International tender. 4 competitors |
Beginning of Construction |
January 5, 1876 |
Inaugurated |
November 4, 1877 |
Overall Length |
352.875 m |
Arch span |
160 m |
Heigth (over the water level) |
61.20 m |
Deck width |
6.0 m |
Total amount of iron |
1600 ton (arch: 640 ton) |
Cost (at construction time) |
965 000 FF |
Images |
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Description |
Road Bridge crossing Douro River at Porto, Portugal |
Type of Construction |
Metalic |
Structural type |
Double hinged arch. Double
decked. Upper deck supported by the arch; Lower deck suspended |
Designer |
Théophile Seyrig |
Constructor |
Soc. Willebroeck (Belgium) |
Contract aspects |
International tender. 10 competitors, 12 proposals |
Beginning of Construction |
1881 |
Inaugurated |
1886 |
Overall Length |
391.25 |
Arch span |
172 m |
Arch chord |
45.1 m |
Heigth (over the water level) |
|
Deck width |
8.0 m |
Total amount of iron |
3045 ton |
Cost (at construction time) |
Esc. 369 000 |
Images |
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Description |
Highway Bridge crossing Douro River at Porto, Portugal |
Type of Construction |
Reinforced concrete |
Structural type |
Fixed end arch |
Designer |
Edgar Cardoso |
Constructor |
Zagallo |
Contract aspects |
|
Beginning of Construction |
May, 1957 |
Inaugurated |
June, 22 1963 |
Overall Length |
614 m |
Arch span |
270m |
Heigth (over the water level) |
70 m |
Deck width |
25.0 m |
Total amount of concrete Total amount of steel Total amount of masonry |
20 000 ton 2 250 ton 7 700 m3 |
Cost |
Esc 126 000 000 |
Images |
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Description |
Railway Bridge crossing Douro River at Porto, Portugal |
Type of Construction |
Pre-stressed Concrete |
Structural type |
Frame |
Designer |
Edgar Cardoso |
Constructor |
FERDOURO |
Contract aspects |
|
Beginning of Construction |
1984 |
Inaugurated |
1991, June 24th |
Overall Length |
1140 m (without thermal joints!) |
Main bridge length |
500 m |
Main span |
250 m |
Heigth (over the water level) |
66 m (deck) |
Deck width |
12.00 m |
Total amount of iron |
Common steel 18 100 ton Principal pre-stress 22 000 000 tfm Vertical pre-stress 2 100 000 tfm External pre-stress 3 500 000 tfm |
Total amount of concrete |
110 000 m3 |
Images |
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Description |
Highway Bridge crossing Douro River at Porto, Portugal. In fact two twin bridges 705 m long connected only in the foundations and abutments. |
Type of Construction |
Prestressed concrete |
Structural type |
Frame (8 spans) |
Designer |
António Reis |
Constructor |
Ferdouro (Teixeira Duarte/Soares da Costa/OPCA) |
Contract aspects |
|
Beginning of Construction |
|
Inaugurated |
1985 |
Overall Length |
705 m |
Main span |
150 m |
Heigth (over the water level) |
~ 43.00 m |
Deck width |
36 m |
Total amount of iron |
|
Cost |
|
Images |
Click to view |
Last modification: December 15th, 1999
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