John Hennessy III,
P.E.
This report examines the data needs that agency staff need to consider when developing a MOD agreement with private providers. Background information on elements of data sharing in this context includes general state of the practice, and challenges and opportunities for transit agencies.
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The off-ramp bridge, part of the viaduct replacement program, is the first in the world built with two columns designed to flex during earthquake tremors and then snap back into position to remain functional. The project was based on research by the University of Nevada-Reno earthquake engineering laboratory using nickel and titanium rebar surrounded by a cement-like composite.
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Check out the progress building the Roosevelt light rail station. It’s part of the Northgate Link extension opening in 2021. See more at: https://www.soundtransit.org/blog/platform/fresh-pics-going-underground-roosevelt-station
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For most people the thrill of fishing is bragging about the size of the catch they’re bringing home, but when our environmental team hits the waters, they’re on a different mission. Rather than length of fish, they’re keeping track of quantity, returning everything they catch to water downstream. Here’s a 60 second look at that process.
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The following projects are finalists to receive the American Society of Civil Engineers (ASCE) Outstanding Civil Engineering Awards.
The winner, one of the among five finalists, will be revealed at ASCE’s OPAL Gala, March 15, in Arlington, VA.
To see videos of all the finalists, check out ASCE’s YouTube playlist
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Now that the tunneling machine Bertha’s work is complete, it’s possible to fly a drone with a video camera from end-to-end inside Seattle’s SR 99 tunnel. In two minutes, you’ll see two miles of ongoing construction work. The upper roadway of the tunnel’s double-deck highway is more than 85% complete. Up next? Installation of the lower roadway, and all the systems it takes to operate a modern tunnel.
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The ACEC 2017 Engineering Excellence Awards “Grand Conceptor” Winner: SR 520 Floating Bridge Seattle, Washington Designed by HDR.
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The SR 99 tunneling machine, Bertha, breaks through to daylight on April 4, 2017 near Seattle’s iconic Space Needle after tunneling 1.7 miles underneath downtown Seattle. See what one of the world’s largest tunneling machines looks like up close as only a drone can show.
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Clearing the debris slide blocking SR 503, 20 miles east of Woodland isn’t as easy as just removing trees and rocks from the highway. A large crack shows where the rock face of the slope has separated from the hillside, making it unsafe below. Record rainfall along with freezing temperatures aided in the debris fall. As of Friday, March 17, the slope is still moving and unstable. We shot this video using a drone, so we can start developing a permanent repair plan.
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