Old Dumbarton Bridge

In use from 1927 to 1982, this was the first automobile bridge to span the Bay. The swing span's center is supported by a 40-foot (12 m) diameter cylindrical concrete pier resting atop more than one hundred piles.The original bridge design for the San Francisco Bay span called for trestle approaches all the way to the swing span.

Preliminary test piles had shown the mud was 2 to 4 feet (0.61 to 1.22 m) deep in the middle of the channel and 16 to 18 feet (4.9 to 5.5 m) deep at the shoreline, atop a layer of sand and gravel ranging from 15 to 20 feet (4.6 to 6.1 m) deep. On 21 August 1907, the supports for a 120-foot (37 m) section of eastern approach trestle, which had been built to within 120 feet (37 m) of the swing span, washed out in the receding tide and the bridge plans were modified.

With Esperanza Catubig, Art Desuyo, Daphne Ashbrook, Leo Burmester. After six hours of delays, the crowd of 2,000 spectators that had gathered for the demolition had dwindled to about 200.

The town of Newark had been named in the 1870s by Scottish developer J. Barr Robertson after a castle in Port Glasgow, on the mouth of Scotland’s River Clyde. GET BREAKING NEWS IN YOUR BROWSER.

Dumbarton Point — the bridge’s eastern terminus — is a reference to a castle on the opposite bank of the Clyde.• Like many Bay Area landmarks, the old bridge has a cameo in the 1971 movie “Harold and Maude,” in the scene in which the title characters elude a traffic cop while transporting a 10-foot tree in the back of a stolen Chevy El Camino.

The new bridge has a role in a key plot point in “Sneakers” (1992). The truss-swing span interface is supported on four cylindrical concrete piers 18 feet (5.5 m) in diameter. However, the wider trestle bents continued to vibrate in the receding tide.

The Bay Bridge would not open until November 1936, and the Golden Gate Bridge six months after that.• The automotive bridge was preceded by a rail bridge that opened in 1910, the first bridge across the bay. Sorry, your blog cannot share posts by email. 50K gallons of raw sewage spilled into Oakland Estuary CLICK HERE TO TURN ON NOTIFICATIONS. Santa Clara County installs California’s first touch-free tech at crosswalks Post was not sent - check your email addresses! Each truss span rests on two cylindrical concrete piers 18 feet (5.5 m) in diameter at either end, except where the truss spans meet the swing span. After New Dumbarton Bridge was built, the middle was torn out of the old one and the eastern side of it was turned into a fishing pier. Coronavirus: California passes 11,000 deaths amid declining hospitalizations

The final as-built design eliminated approximately 1,080 feet (330 m) of trestle approaches in favor of the six 180-foot (55 m) steel truss spans, three on either side of the swing span.The swing span across Newark Slough is similar to the Dumbarton Rail Bridge swing span; both are through truss swing spans, both are sized for double-track service, and both have the mechanical/Operator's house atop the center of the truss.

Old Dumbarton Bridge before it was restored In the mid 18th century, the Duke of Argyll was anxious to obtain access to Glasgow from his properties in Argyll and at Rosneath. Just south of the current auto bridge, it has been unused since 1982 but remains in place, its swing span now permanently in the open position to allow ship traffic.• Who is the bridge named after? The old Dumbarton Bridge: Did you see it fall into the bay? The Dumbarton Rail Bridge (then known as the Dumbarton Point Bridge or, simply, Dumbarton Bridge; one of the major structures of the Dumbarton Cut-off rail line) was championed by E. H. Harriman. Three people were shot in different areas of Oakland Friday. The Newark Slough bridge is 182 feet (55 m) longWhen the Dumbarton Rail Bridge was in use, boaters would signal the operator, who would start a diesel engine and rotate the bridge to the open position on a large gear. On the 90th anniversary of its opening, we remember the original Dumbarton Bridge, the first automobile span across the San Francisco Bay.And, perhaps sadly, what we remember best is the day of its demise.Just before 3 p.m. on Sept. 23, 1984, the 222-foot-long main span of the old bridge went tumbling into the bay. Coronavirus: California passes 11,000 deaths amid declining hospitalizations The bridge could swing open or closed in two minutes.

Nearby cities: San Jose, California, Fremont, California, Oakland, California

What they saw was a bright flash from 176 explosive charges, a dark cloud of smoke and dust, and then the splash as 600 tons of debris fell into the water.The delay was the result of numerous adjustments to make sure the towers on each side wouldn’t be destroyed as well. Those towers and the eight other spans would be taken down later.“Sorry, but we’re not in the entertainment business,”  Jack Loizeaux of Controlled Demolition Inc. told a Mercury News reporter when informed that he had ruined the Sunday morning plans of hundreds of would-be observers.Traffic on the replacement bridge was halted for 21 minutes to allow for the explosion.• The first cars drove across the automotive bridge on Jan. 17, 1927.

Work on the eastern trestle approaches was nearly complete by the end of 1907, but it was the foundation for the steel structure over the San Francisco Bay that posed the greatest challenge,The Dumbarton Cut-off rail line includes a second swing bridge to the east of the Dumbarton Rail Bridge, spanning Newark Slough.The bridge was initially anticipated to be completed in mid-1907,The increased freight service afforded by the Dumbarton Cut-off caused some Hillsborough residents to complain about the black smoke.Some sections of the timber trestles were replaced with precast concrete structures in the 1960s and 1970s.Just before 7 P.M. on the night of 3 January 1998, the western trestle approach caught on fire,There are plans for new rail bridges, new stations, and rehabilitation of the rail line to serve a commuter rail service to connect Union City, The required improvements to infrastructure drove up project costs dramatically. Dumbarton is a place, not a person.

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