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Archive for the ‘Roads’ Category

Building A Quake-Proof Bridge

Wednesday, August 27th, 2014
Building A Quake-Proof Bridge

A new, rocking, pre-tensioned concrete bridge support system has been developed by the University of Washington that reduces on-site construction time and minimizes earthquake damage. The 52-ton, 70-foot-long concrete bridge, built atop three 14- by 14-foot, 50-ton-capacity hydraulically driven shake tables at the University of Nevada, Reno, was shaken in a series of simulated earthquakes, culminating in the large ground motions recorded in the deadly and damaging 1995 magnitude 6.9 earthquake in Kobe, Japan.

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La Grande, OR: A Bicycle Detour for Highway Construction

Monday, August 25th, 2014
La Grande, OR: A Bicycle Detour for Highway Construction

Bicycle detour options around construction site on I-84 in eastern Oregon, west of La Grande.

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Lowell, MI: Demolition of the M-50 Bridge

Friday, August 22nd, 2014
Lowell, MI: Demolition of the M-50 Bridge

Normally, bridge demolition is a fairly fast process that can even allow for traffic to cross one side of the bridge during work. With the M-50 bridge, the situation was much different. Crews had to close the entire bridge due to the way it was built.

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OIder Pedestrians at Risk in the Tri-State Region: NY/ NJ/ CT

Friday, August 22nd, 2014
Figure 1. Tri-State Average Pedestrian Fatality Rate by Age Group (2003-2012)

TRI-STATE TRANSPORTATION CAMPAIGN
TSTC’s analysis clearly shows that across the tri-state and in the U.S., pedestrians 60 and older are at higher risk of dying from a car collision than their younger neighbors.

Why is this? A larger proportion of older adults may choose not to drive or may be unable to drive than younger adults, leaving a great number of older adults reliant on walking and taking transit. Also, as AARP explains, “With advanced age, bone density declines, making serious injury or death more likely if one is hit by a car.[. . .] Falls among people 65 and older are an equally significant public health concern and cost more than $19 billion annually in total direct medical costs. Inadequate sidewalk maintenance increases older adults’ risk.”

Simple roadway improvements, such as clearly marked crosswalks, longer crossing signals and wider pedestrian islands can help older pedestrians cross the street. Well-maintained sidewalks also help older adults get around safely without a vehicle.

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Tennessee’s Long-Range Transportation Plan

Tuesday, August 19th, 2014
Tennessee’s Long-Range Transportation Plan

TDOT is working on a new 25-Year Long-Range Plan. We’d like your input. http://www.tdot.state.tn.us/transportationplan/

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Utah DOT: Cleaning Culverts with Remote-Control Machines

Monday, August 18th, 2014
Utah DOT: Cleaning Culverts with Remote-Control Machines

Region 2 crews cleaning culverts via remote control.

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Oregon DOT: Fighting Forest Fires Along U.S. 30

Wednesday, August 13th, 2014
Oregon DOT: Fighting Forest Fires Along U.S. 30

Firefighters deploy along US30 in the Columbia River Gorge to protect life and property.

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When to Use Existing Pavement in Highway Maintenance

Tuesday, August 12th, 2014
Photo of 35-year-old unbonded PCC overlay on I-90.

THE SECOND STRATEGIC HIGHWAY RESEARCH PROGRAM (SHRP 2)
This report documents the findings from the second Strategic Highway Research Program (SHRP 2) R23 project, Using Existing Pavement in Place and Achieving Long Life. This project falls within the SHRP 2 Renewal area, which focuses on improving the ability of highway agencies to design and construct long-lasting highway projects with minimal disruption to the traveling public. The project found that construction costs and time can be greatly reduced if the existing pavement can be used in place for part of the rehabilitation solution.

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The Changing Nature of State-Federal Relations in Transportation

Monday, August 4th, 2014

Innovation Newsbriefs
Vol. 25, No. 11
With the Republicans likely to control the Senate next year and the presidential elections casting a shadow over any new proposal to raise taxes, there will be a huge temptation for Congress to kick the can down the road once again — beyond the presidential election and into the next Congress. Remember, it took three years and eight short-term extensions to pass the last reauthorization, MAP-21!

Fortunately, many individual states are trying to compensate for the lack of congressional action on long term funding by raising additional revenue of their own. Our survey has identified more than 30 states that have launched transportation-related fiscal initiatives in the past two years.

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NYC: Six Months of Vision Zero Traffic Enforcement

Friday, August 1st, 2014
Image 1: Map of the most improved and least improved precincts in each Borough Command for speeding summonses, January to June 2013 versus 2014.

TRANSPORTATION ALTERNATIVES
Despite two decades of steady declines,traffic fatalities remain an epidemic in New York City. More people are killed in traffic than are murdered by guns;traffic crashes are the foremost cause of preventable death for New York City children and, after falls,the primary cause of injury-related death for older New Yorkers.

In February 2014, Mayor Bill de Blasio launched a Vision Zero initiative –with the goal of eliminating traffic fatalities and serious injuries in New York City by 2024 –which the New York Police Department embraced wholeheartedly, instructing all precinct commanders to increase enforcement of the most dangerous traffic violations.Increased enforcement remains a central element to achieving Mayor de Blasio’s Vision Zero goal.

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