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Better traffic signals save time ... and can help save the planet
Image: INRIX
In February 2021, the United States officially rejoined The Paris Agreement, an international treaty on climate change, committing to reducing greenhouse gases (GHGs) by 50% below 2005 levels over the next decade. To meet these targets, the country needs to continue to reduce emissions 5% every…
October 25, 2021
WSDOT State Route 104 test site (wet, dusk) demonstrates the difference between traditional all glass beads and the wet performing bead mix.
WSDOT State Route 104 test site (wet, dusk) demonstrates the difference between traditional all glass beads and the wet performing bead mix.
Consider the following outrageous hypothetical situation: “When it rains at night, new high-tech headlights automatically reduce their light output by half.” That would be … suboptimal. But that is somewhat analogous to the situation drivers have been dealing with when trying to see roadway…
September 17, 2021
Recently, the Washington State Supreme Court held a public owner’s mere dissatisfaction was insufficient for a default termination when the contractor acted diligently. Also, in addressing a question of first impression, the court held a failure to notify and afford an opportunity to cure alleged…
September 08, 2021
Northgate Station light-rail
All images: Sound Transit
After 15 years of planning, design, and construction, Sound Transit’s Northgate Link extension will open on Oct 2, 2021. The 4.3-mile extension connects to Sound Transit’s existing 20-mile light-rail system, extending it northward from the current terminus at the University of Washington Stadium.…
August 26, 2021
Traffic is down. Everywhere. This has been both good and bad.  Primary among the bad is a dissociative increase in accidents and pedestrian incidents. In many parts of the country, drivers seem to think that the more open a road, the fewer rules they need to continue to adhere to. According to the…
January 06, 2021
Contract provisions related to changes, claims, protests, or disputes typically include notice requirements. The importance of properly following such notice procedures, and with an attention to detail, cannot be overstated. Generally, the purpose of giving notice in the required form and format is…
January 06, 2021
Last year, more than 38,000 people died in car crashes in the U.S. and about 4.4 million people were injured seriously enough to require medical attention. Unfortunately, those annual statistics are not unusual. In response, cities across the nation are turning to a more data-driven approach to…
July 15, 2020
Washington State Ferries (WSF) is the largest ferry system in the U.S., serving eight counties within Washington and the Province of British Columbia in Canada. The agency is a division of the Washington State DOT (WSDOT) and, as such, its terminals and vessels are designated as part of the state…
May 13, 2020
The sight of large cattle chasing pedestrians down the street is barely enough to make residents of Spain look up from their gazpacho. But this past March when a lion came sauntering down a street in the small town of Molina de Segura, the policía were besieged with calls.  Officers arrived on the…
May 13, 2020
The city of Bellingham, Washington, is a growing community in the northwest corner of the U.S. along the shores of Puget Sound and the Georgia Strait, two major inland areas of the Pacific Ocean. As this area developed from the late 19th century through the early 1900s, it became a regional hub of…
April 01, 2020
The National Asphalt Pavement Association (NAPA) unveiled at a ceremony during the association’s 65th Annual Meeting in Maui, Hawaii, its annual Quality in Construction award winners.  As in years past, Roads & Bridges here brings you a look at some of the winners. Though NAPA bestows these…
March 02, 2020
Designers and contractors on a successful project are rarely as modest as those who championed the Wildcat Creek Bridge. In fact, they thought this was a pretty simple, straightforward piece of work. “There was nothing terribly uncommon about this project,” Michael Carfagno, VP of engineering…
November 05, 2019
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