Showing posts with label USA. Show all posts
Showing posts with label USA. Show all posts

January 11, 2014

Verrazano-Narrows Bridge

Majestic, graceful, powerful — the Verrazano-Narrows Bridge is a breathtaking sight visible from vantage points in all five of New York City’s boroughs. The bridge celebrates its 50th anniversary in 2014, which the U.S. Postal Service commemorates with this new Priority Mail stamp.
The digital illustration on the stamp captures the grandeur of the Verrazano, not only showing its sheer size and scale, but also giving a sense of the sweeping curve of the double-decker roadway. The artist chose to showcase the bridge at twilight, which offers an interesting play of light and shadow.

Named for explorer Giovanni da Verrazzano, the first European to enter New York Bay, the bridge spans the Narrows, the strait dividing Upper and Lower New York Bay, and connects Brooklyn and Staten Island. The bridge’s two massive towers support four enormous cables that each weighs more than 9,000 tons. From each cable hang 262 suspender ropes that hold up the double-decker roadway. Each deck carries six lanes of traffic.

The bridge’s center span is 4,260 feet long—so long that its two monumental towers, soaring 690 feet into the sky, are spaced one-and-five-eighths inches farther apart at their tops than at their bases to compensate for the curvature of the earth.

At time of the opening of the upper deck on November 21, 1964, it was the longest suspension bridge in the world. (The lower deck opened five years later.)

Designed by art director Phil Jordan, the stamp features a digital illustration created by Dan Cosgrove.

Stamp Issue: 2014

Arlington Green Bridge

The scenic Arlington Green Bridge in Bennington County, Vermont, takes center stage in this Priority Mail stamp. One of the most-photographed covered bridges in the state, it was built in 1852.

The digital stamp art depicts the red wooden bridge against a backdrop of autumn leaves. On the far side of the bridge, a white church steeple rises from a traditional village green. The bridge spans the Batten Kill trout stream in Arlington, just off Route 313 in southern Vermont. Although it stretches 80 feet across the stream, the bridge’s roadbed is only wide enough to allow one lane of traffic to rumble over its wooden planks at a time.

Stamp Issue: 2013.01.25

Sunshine Skyway Bridge

The U.S. Postal Service recognized the 25th anniversary of Florida's Sunshine Skyway Bridge by issuing the $5.15 Sunshine Skyway Bridge Priority Mail stamp. In the stamp artwork, the bridge rises from Tampa Bay's vivid blue water and is silhouetted against an orange sky. Tiny vehicles on the roadbed reveal the massive scale of this engineering marvel.


The new Sunshine Skyway bridge started with a disaster and concluded with the world's most beautiful bridge. The collision and loss of life which occurred on May 9, 1980, created an opportunity to build a new bridge which memorialized the 35 people who lost their lives that day; engaged state of the art design, engineering and construction and unified the Tampa Bay communities to create what is now the signature of Tampa Bay.

Construction began on the new bridge began two years after the tragedy. The new bridge featured on the stamp is one of the first major concrete-and-steel, cable-stayed bridges in the United States. Completed in 1987, the main bridge and approach spans stretch more than four miles across Tampa Bay and link the Gulf Coast communities surrounding St. Petersburg and Bradenton.

To many people the 42 brilliant yellow cables look like sails and their two supporting pylons like masts rising from the water. Engineers designed the cable-stayed section of the new bridge to soar 190 feet above the water to allow unhindered navigation to and from the busy port of Tampa.

Setting new standards for technical innovation and esthetics, the structural design is considered by many to be a modern masterpiece. Renamed in 2005 after the former governor who envisioned its construction, the Bob Graham/Sunshine Skyway Bridge has been the recipient of dozens of engineering and design awards.

The stamp, designed by Carl T. Hermann of North Las Vegas, NV, showcases a digital illustration created by artist Dan Cosgrove of Chicago, IL.

Stamp Issue: 2012.04.28

New River Gorge Bridge

The stamp features the New River Gorge Bridge in Fayette County, West Virginia, and is based on a digital illustration by Dan Cosgrove of Clarendon Hills, Illinois, depicting the bridge as sunset approaches.

One of the highest bridges in the United States, the bridge features a 1,700-foot span that is the longest steel arch in the Western Hemisphere. The Washington Monument could fit under its 876-foot arch with more than 100 yards to spare.

 

The two-hinged deck arch spans a gorge that, before its completion in 1977, required drivers 40 minutes to navigate because of narrow and winding roads. The steel and concrete bridge weighs more than 88 million pounds. Its unpainted, weathering steel oxidizes with age and becomes a rustic brown color that blends the bridge into its rugged surroundings. 

Held on the third Saturday of October, New River Gorge Bridge Day draws more than 100,000 people, including hundreds of rappellers, who descend down the bridge on ropes, and BASE (building, antenna, span, and earth) jumpers

Stamp Issue: 2011.04.11

The Mackinac Bridge

The Mackinac Bridge towers 200 feet above the windswept waters of Lakes Huron and Michigan.  “Mighty Mac” extends 5 miles across the Straits of Mackinac to link Michigan’s Upper and Lower Peninsulas.

Before the bridge opened in 1957, travelers waited in long lines to cross the channel by ferry or drove all the way around Lake Michigan and through Wisconsin to get to the other side.  The Mackinac Bridge shortened the trip to a ten-minute drive and opened the Upper Peninsula to tourism – adding an estimated $100 million a year to Michigan’s tourist trade.

Bridge designers took special precautions for Michigan’s severe winter weather.  Grated openings between the center lanes improve airflow and prevent the road deck from being pushed up by strong winds.  During high winds, the road deck can also move up to 35 feet from side to side to keep the bridge from buckling.

Some drivers are uncomfortable crossing the Mighty Mac.  Bridge personnel call these commuters “timmies,” because they are too timid to drive across.  The bridge authority provides them with a chauffeur at no extra fee. 

On September 6, 2009, the 150 millionth vehicle crossed the Mackinac Bridge.

Stamp Issue: 2010.02.03

Bixby Creek Bridge

With the blue waters of the Pacific rolling out below and the rugged mountains of Santa Lucia in the background, the Bixby Creek Bridge carries travelers toward their destinations. The California landmark also connects people with nature. 
Completed in 1932, the Bixby Creek Bridge introduced automobile travel to Big Sur, California.  Prior to its opening, travelers endured rough wagon roads.  The 30-mile round-trip journey from Monterey to Big Sur used to take 3 days.  The bridge has improved travel and opened up tourism to the region.  

Bixby Bridge is a tourist destination in itself.  Using Art Deco style, the sweeping arch and slender columns make it appear part of the natural landscape.  Rather than cut through the countryside, Bixby was purposely designed to preserve and complement it.  The two large pillars are set wide apart, allowing Bixby Creek to run its natural course.  The columns are also set directly into the canyon wall, reducing the amount of excavation needed.

Bixby Creek Bridge is one of the most recognizable landmarks in California.  Spanning Rainbow Canyon, the bridge combines art, conservation, and function.  Its beauty is matched only by the ocean waves crashing on the sandy shores below.

Stamp Issue: 2010.02.03

June 20, 2013

Verranzano-Narrows Bridge

The Verrazano-Narrows Bridge, between Staten Island and Brooklyn, New York, is the longest single suspension bridge in the world. It is named for Giovanni da Verrazano, Florentine explorer who discovered New York harbor in about 1524. The massive span features a double deck thoroughfare, each wide enough for six lanes of traffic. The diameter of the cables measures 1 yard-identical with those on the George Washington Bridge. The Narrows Bridge is important in that it by-passes New York City. A map, illustrated on the stamp itself, pinpoints the positions of the Bridge with its close relationship to Staten Island and Brooklyn and also Manhattan and Jersey City, New Jersey.
Stamp Issue: 1954

The Mackinac Bridge Connecting The Peninsulas of Michigan

The Mackinac Straits Bridge extends over the Mackinaw Straits between Mackinaw City and St. Ignace, Michigan. The Mackinac Straits connects Lake Huron and Lake Michigan. The total suspension length of the span is more than a mile and a half between the cable anchors. The principle of the suspension bridge is that it has three essential parts: towers, anchorages, and cables. Towers for suspension bridges are built of stone or steel. Anchorages secure the ends of the cables, and most often are built of concrete or masonry. Cables are the most important element of a suspension bridge, since they carry the horrendous weight of the roadway.
Stamp Issue: 1958

The Golden Gate Bridge

The Golden Gate Bridge has the longest single span in the world, and the tallest bridge towers. Each of the cables has a diameter of one yard, and is composed of 27 thousand wires. Foundations have been sunk to solid rock 100 feet below water. The two main cables, each a yard wide, are outlined for the entire length by electric lights-magnificent evening sight. The Golden Gate Bridge and the Oakland-Bay Bridge were under construction at the same time; the Golden Gate Bridge is considered one of the most attractive spans in the world. The wonder of the extraordinary length of the span and the way it fits in with the site, make it one of the most exhilarating of bridges.
Stamp Issue: 1998

The San Francisco-Oakland Bay Bridge

In 1928, a San Francisco delegation urged Congress to pass a bill authorizing a bridge to connect San Francisco with Oakland and Berkeley-with 5 miles of water between. The legislation was defeated, but in 1932 Congress approved a $73 million loan with the endorsement of President Herbert Hoover. The first shovel broke ground in 1933, and 3 years later the span was opened to vehicular traffic with excited celebration. After competing ferries cut their fares in half in 1927, the bridge traffic amounted to 23 thousand vehicles a day. With the opening of the Golden Gate Exposition in San Francisco in 1939, tolls were reduced from 50 to 40 cents, and when cut further to 25 cents, the ferries gave up.

The roadway was built on two suspension bridges, with a central pier or anchorage at mid-channel. There are two decks: the top one handles six lanes for cars and light truck traffic. The lower deck carries three lanes for heavy trucks and multi-wheelers. There are also two streetcar (trolley) tracks provided. The structure is a combination of suspension and cantilever spans connected with a tunneled island.

Stamp Issue: 1939

The George Washington Bridge

The George Washington Bridge, over the Hudson River and dividing New York and New Jersey, is likely the heaviest and busiest of suspension bridges. Crossing the Hudson River at 178th Street, it is designed to carry huge loads. Twenty thousand tons of riveted steel for each tower was erected by massive derricks. Sixteen columns of steel 635 feet above water, as high as the Washington Monument, were put up.

The steelwork was planned early as a skeleton, and was to be covered by concrete and granite. However, as the steel skeleton rose, story by story, the unexpected attractiveness of the exposed steelwork fascinated virtually everyone who witnessed it. Consequently, massive appeals arose to "forget the masonry" that had been planned for the towers. Each of the four cables holding up the deck is a yard in diameter and a mile long. The 100,000 miles of wire could encircle the globe four times. Construction began in 1927 and continued for the next 4 years. Provision was made for an additional (lower) deck, which has since been added. The bridge opened to traffic in 1931. Of course it honors the name of the great General who managed to form the thirteen original colonies into one United States.

Stamp Issue: 1952

The Peace Bridge

The Peace Bridge has been significant in the growth of the country. It crosses the Niagara River from Buffalo, New York to Fort Erie, Ontario, Canada. The stamp commemorates more than a century of friendship, trade, and peace between the United States and Canada. The two nations share the longest undefended border in the world. New advances in construction have been used.

The Peace Bridge was built for pedestrian and vehicular traffic. Clearance at one end of the span is for canal or ship movement. The bridge is made up of five steel arches and a single truss span. At the elaborate opening ceremonies in 1927 a number of luminaries attended, including Edward, Prince of Wales.

Stamp Issue: 1977

The Brooklyn Bridge

In l869, actual construction of the Brooklyn Bridge, over the East River between Brooklyn and Manhattan, started. John Augustus Roebling, original architect of the project, was injured in an accident. Blood poisoning resulted in his untimely death. Fortunately his son, Colonel Washington Augustus Roebling, took over direction of the work involved from then on until completion. The grand opening was in May 1883.


This great bridge handles two elevated railroad tracks, two streetcar (trolley) tracks, road lanes for vehicles, and even a foot walk for pedestrians. Just to observe the massive stone towers one is in awe of their height. They had to be lofty to carry the cables which in themselves-wire by wire-measured 16 inches in diameter. Tons of steel wire had to be used to hold up the incredibly heavy bridge deck.
With the long main span, and two shorter spans, the bridge is 1 mile long. It is constructed of four cables, each anchored to plates of many tons, embedded in masonry foundations. Each foundation has a weight of 44 thousand tons. Every cable contains more than five thousand steel wires-a total of fourteen thousand miles of wire. It took thirteen years to build the bridge. At present thousands cross it each day. Even this writer, when working in New York, walked across this Bridge with friends and couldn't help but marvel at the magnificence of it all.

Stamp Issue: 1983

The Mississippi River Bridge

The Eads Bridge over the Mississippi River at St. Louis was constructed from 1867 to its opening in 1874. The structure was built by Captain James Buchanan Eads, and is considered the first bridge made of steel. The U.S. Postal Service preferred to attach the sobriquet "Mississippi River Bridge" rather than employ the proper, personal, private name "Eads."


The span is double deck, with the upper level carrying a highway with sidewalks. On the lower deck, two lines of railroad tracks fill the space. This marks the first time steel is used in truss-bridge construction. A franchise was obtained from Congress specifying that a clear span of 500 feet must be provided. A report, published by Captain Eads in 1868, was a convincing presentation in non-technical language, on the "action of trusses and arches, also the logic of the foundation design." Progress, along with precautionary measures, were recorded in notebooks that filled seven volumes.
Funding for the Bridge building came from contracts with the Keystone Bridge Company of Pittsburgh, Pennsylvania. The Vice President was a young man of 35 years by the name of Andrew Carnegie. His connections with Eads were numerous. In his autobiography, completed shortly before his death, Carnegie credited his connection with Eads Bridge as starting him on his career. To this day the span is in full use.

Stamp Issue: 1898