Posted by Brendon Embry

6/21/17 1:05 PM

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Ferry Service in the U.S.

Tucked between the towns of Rocky Hill and Glastonbury, Connecticut lies a three-vehicle barge that provides rides across the Connecticut River. This service is known as the Rocky Hill-Glastonbury Ferry, which began operations in 1655. This makes it the oldest operating ferry service in the United States. We've been involved in quite a few waterfront infrastructure projects, and wanted to offer our perspective on the history of ferries in America.

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Topics: waterfront infrastructure, ferry terminals

Posted by Brendon Embry

6/14/17 9:20 AM

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Sarah Long Bridge for the Next Century

The states of Maine and New Hampshire started a project called the “Three Bridge Agreement” in 2011. The project addresses the three bridges that the two states jointly own, including the Sarah Mildred Long Bridge. As part of the agreement, the old bridge would be replaced by a new version that would allow more clearance for ship traffic along with features that bring it to federal interstate highway standards.

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Topics: vehicle bridges, wind fairings

Posted by Brendon Embry

6/7/17 9:11 AM

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Lift Bridge with Long History of Service

Since 1940, the Sarah Mildred Long Bridge has provided a link between the states of Maine and New Hampshire. The bridge was a project undertaken by the then-newly formed Maine-New Hampshire Interstate Bridge Authority. The Authority wanted to replace a river crossing that was built in 1822, introducing a more viable option for travelers from Portsmouth, New Hampshire and Kittery, Maine. Let's take a closer look.

 

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Topics: vehicle bridges, historic bridges

Posted by Brendon Embry

5/30/17 2:29 PM

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Fairings at Work: Bronx-Whitestone Bridge

 

When it opened in 1939, New York City planner Robert Moses called the Bronx-Whitestone Bridge the finest suspension bridge in the world. Fast forward just two years when, by 1941, engineers feared the bridge would collapse. The bridge, designed by the acclaimed engineer Othman Ammann, swayed slightly in winds greater than 30 miles per hour, which is never good. The solution? Fairings.

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Topics: wind fairings, suspension bridge

Posted by Brendon Embry

5/24/17 9:19 AM

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Tacoma Narrows Bridge: Why We Use Wind Fairings

 

November 7th, 1940 is a day that changed the course of bridge engineering (as well as the study of aerodynamics) forever. That day, the Tacoma Narrows Bridge in Tacoma, Washington began to sway violently. A physical phenomenon known as aeroelastic flutter caused the bridge to sway both vertically and horizontally for about an hour. At around 11:00 a.m. the Tacoma Narrows Bridge collapsed after the structure failed in the face of 40 mph winds. Only one life was lost, a cocker spaniel belonging to the lone driver on the bridge when it began to sway. Ever since, engineers and bridge owners have invested more time and money on new technologies to prevent another bridge collapse.

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Topics: vehicle bridges, wind fairings

Posted by Brendon Embry

5/17/17 1:09 PM

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Against The Wind: Wind Fairings 101

Composite Advantage has been working hard on wind fairings destined for the Sarah Mildred Long Bridge that spans the Piscataqua River between Maine and New Hampshire. You may be asking, "Wait - what's a wind fairing?" Wind fairings are simple triangular convex-concave structures that are attached to bridges to deflect potentially-damaging strong winds. Let's explore.

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Topics: Infrastructure, bridge fairings

Posted by Scott Reeve

5/11/17 11:00 PM

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Rocks Village Bridge Swings Open

Last week I was in the South Boston area participating in a final inspection of a high-end pedestrian bridge that will be opening in the next month.

Anytime that I'm near bridge decks we've previously installed, I make it a point to visit the bridge to monitor the decks. That led me to Rocks Village Bridge in Haverhill, Massachusetts where Composite Advantage has an FRP deck on a vehicle bridge. The Rocks Village Bridge, pictured above, is a six-span historical truss bridge with a movable span in the middle. While I was inspecting the deck panels, the non-slip overlay and the underside of the bridge, the crew came out to open the bridge so a boat could pass through. The swing span is manually operated and apparently opened at least three to four times per week. Since I'd never seen this swing span open, I stayed around to watch.

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Topics: Rocks Village, vehicle bridges, swing span

Posted by Peter McGrane

5/2/17 1:34 PM

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Building Bridges in Las Pencas, Nicaragua

NDSEED, a Notre Dame engineering organization with the goal of bringing pedestrian bridges to underdeveloped rural communities in Central and South America, is once again preparing to complete a bridge in Nicaragua this summer. The group of 8 undergraduate traveling members, varying in age from sophomores to seniors, were in Nicaragua for a week during January to survey the site and speak with contacts in Managua about the summer implementation trip.

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Topics: pedestrian bridges, Bridges to Prosperity, NDSEED

Posted by Jessica McCann

4/21/17 2:42 PM

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Pedestrian Pathways: Ontario & Québec

Québec City

Now that the weather is heating up, it’s not too painful to revisit a cold week in February. My family spent an early spring break visiting Canada – Ottawa, Montreal and Québec City to be precise. That’s right - when the rest of the Midwest goes south, we go north. While exploring, we noticed several noteworthy pedestrian bridges and walkways, and I'm here to share our observations.

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Topics: pedestrian bridges

Posted by Lexi McCormick

4/18/17 2:42 PM

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A Modern Twist On Pedestrian Bridges

In this day and age, big cities are seeking out ways to make their cities really stand out.  One increasingly popular way of doing this is to create innovative architectural designs to complement urban landscapes. We’re in the business of bridges so, of course, we are here to highlight yet another unique bridge design.

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Topics: pedestrian bridges, unique bridges