> Vastaanottaja: Reijo Marttinen
> Aihe: Fwd: Fw: CHECK OUT THIS BRIDGE IN MEXICO
> Puente Baluarte
> El Palmito, Sinaloa, Mexico
> 1,321 feet high / 403 meters high
> 1,706 foot span / 520 meter span
> the highest bridge in North America but the highest cable stayed bridge in the
> world surpassing the Millau Viaduct in France. It is the crown jewel of
> the greatest bridge and tunnel highway project ever undertaken in North
> Known as the Durango-Mazatlán highway, it will be the only crossing for
> more than 500 miles (800 km) between the pacific coast and the interior of
> Mexico. The path of this new highway roughly parallels the famous “Devil’s
> Backbone”, a narrow road that earned its nickname from the way it follows
> the precarious ridge crest of the jagged peaks of the Sierra Madre
> Occidental mountains. The dangerous road is a seemingly endless onslaught
> of twisting, terrifying turns that are so tight there are times the road
> nearly spirals back into itself.
> By cutting a safer, more direct route through the mountains, the highway
> the city of Durango and the coastal city of Mazatlán. To achieve this
> connection, the Mexican engineers were forced to design an autopista with
> no less than 63 tunnels - nearly 10 times more than have ever been built on
> any road in North America. For big bridge fans, the highway is no less amazing
> with a parade of towering concrete beam bridges. Including Baluarte, there
> will be 8 bridges that exceed 300 feet (90 mtrs) in height including Santa
Lucia, Neverías, La Pinta, Chico, Botijas, Pueblo Nuevo and El Carrizo.
> Only China’s West Hurong and Kunming-Guiyang and Italy’s A3 highways have a
> greater collection of high bridges.
> Forming the border between Sinaloa and Durango states, the Baluarte River
> mile in height. To cross it, the Mexican engineers decided to go with a
> cable stayed bridge. It would allow the construction to proceed outward
> from a single tower on either side of the canyon, avoiding the difficult and
> expensive construction of temporary false work. Once completed, the final
> height of 1,321 feet (403 mtrs) will make it the second highest roadway
> bridge on earth. It will also have the longest span of any cable stayed
> bridge in North America at 1,706 feet (520 mtrs), exceeding the John James
> Audubon bridge in St. Francisville, Louisiana by 123 feet (37 mtrs).
> pre-eminent bridge but a signal to its bigger neighbor to the North that
> Mexico can design and build bridges with the same skill and perfection as
> the best of them. As a stretch of North American pavement without
> parallel, the Durango-Mazatlán highway will become a proud, prominent symbol of
> Mexico’s civil engineering skills for decades to come.
> Image by Grupo Triada / Owner SCT>
> On the right workers tie rebar high above the foundation of pier 2. Image
> by Grupo Triada / Owner SCT
> The foundations are very deep for Baluarte to ensure the piers will always
> be stable.
> A view of pier 3. Image by Grupo Triada / Owner SCT
> Image by Grupo Triada / Owner SCT
> A huge hole was dug for pier 8 which has one of the deepest foundations of
> the bridge. Image by Grupo Triada / Owner SCT
> On the western end of the Sinaloa side, workers hang high above pier 11.
Another view of pier 8. Image by Grupo Triada / Owner SCT
> The V-shaped support of the shorter main tower on the Sinaloa side takes
> shape high up on the edge of the gorge. Image by Grupo Triada / Owner SCT
> Temporary office and work buildings surround the base of the main tower on
> the Durango side. Image by Grupo Triada / Owner SCT
> The western approach spans on the Sinaloa side cross a canyon more than
> 400 feet (122 mtrs) deep. If listed as a separate bridge, it would rank among
> Mexico's 10 highest bridges. Image by Grupo Triada / Owner SCT
> Looking down to the bottom of the 400 foot (122 mtr) deep canyon and piers
> 8 and 9. Image by Grupo Triada / Owner SCT
> A view of pier 10 on the Sinaloa side. Image by Grupo Triada / Owner SCT
Image by Peri.dk.
> A clean rock face marks the spot where the Durango side tunnel will punch
> through the mountain. Image by Grupo Triada / Owner SCT
Image by Grupo Triada / Owner SCT
> An early construction view before the piers had risen above the ground.
> Image by Tradeco
> Early construction view of piers 9,10,11 and 12.
> Baluarte Bridge aerial.
> Baluarte Bridge model
> Baluarte Bridge model
> Baluarte Bridge model.