LähettäjäLähetetty: 18. maaliskuuta 2012 23: 47 > Vastaanottaja: Reijo Marttinen



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LähettäjäLähetetty: 18. maaliskuuta 2012 23:47

> Vastaanottaja: Reijo Marttinen

> Aihe: Fwd: Fw: CHECK OUT THIS BRIDGE IN MEXICO

>


> Subject: CHECK OUT THIS BRIDGE IN MEXICO

>


> Baluarte Bridge

> Puente Baluarte

> El Palmito, Sinaloa, Mexico

> 1,321 feet high / 403 meters high

> 1,706 foot span / 520 meter span

> 2012>

>

>



>

>


> When it is completed in 2012, the Baluarte River Bridge will not only be

> 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

America.
> 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



> department of Mexico hopes to improve trade and increase tourism between

> 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



> is the most formidable obstacle on the route with a gorge more than a quarter

> 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).

>


> When it is completed, the Baluarte crossing will be more than just a

> 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.

>

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>

> Image by Grupo Triada / Owner SCT>

>

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>

> On the right workers tie rebar high above the foundation of pier 2. Image

> by Grupo Triada / Owner SCT

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>

> The foundations are very deep for Baluarte to ensure the piers will always

> be stable.

>

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>

> A view of pier 3. Image by Grupo Triada / Owner SCT

>

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>

> Image by Grupo Triada / Owner SCT

>

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>

> 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.

> Image by Grupo Triada / Owner SCT

>

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>

Another view of pier 8. Image by Grupo Triada / Owner SCT

>

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> 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

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>

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> Temporary office and work buildings surround the base of the main tower on

> the Durango side. Image by Grupo Triada / Owner SCT

>

>


>

> 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

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> Early construction view of piers 9,10,11 and 12.

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>

> Baluarte Bridge aerial.

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> Baluarte Bridge model

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>

> Baluarte Bridge model

>

>


>

> Baluarte Bridge model.



>

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> Baluarte Bridge model.


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