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Current Projects

Promises of Data from Emerging Technologies for Transportation Applications: PSRC Case Study, Planned Continuation and Expansion of Phase II

Emerging technologies such as automated vehicles, advanced data analytics and machine learning, and on-demand ride services will not only fundamentally alter the transportation landscape but will provide new data that can be used for transportation planning and analysis. This project is examining the properties of these new data and identifying potential applications. Phase I developed a preliminary framework for integrating emerging and conventional data from diverse sources. Using the Seattle SR 99 Tunnel Tolling Project as a case study, Phase II began to demonstrate the value of emerging big data (more specifically, app-based data) and their fusion with data from other, conventional sources in evaluating a project’s impact on transportation system performance and in answering critical and time-sensitive planning and policy-related questions. This continuation of Phase II will focus on investigating other potential future data sources, such as transportation network companies, insurance providers, and automakers, and on sharing methodologies created for data processing, origin/destination estimation, and validation. The researchers will make all work open source in order to help state, regional, and local agencies better coordinate among agencies and with data providers.

Principal Investigators:
Jeff Ban, Civil and Environmental Engineering, UW
Cynthia Chen, Civil and Environmental Engineering, UW

Sponsor: WSDOT
WSDOT Technical Monitor: Natarajan Janarthanan
WSDOT Project Manager: Doug Brodin
Scheduled completion: December 2023

Performance of Steel Jacket Retrofitted Reinforced Concrete Bridge Columns in Cascadia Subduction Zone Earthquakes

In 1991 WSDOT began a seismic retrofit program for state bridges that continues today. WSDOT’s primary method for retrofitting concrete bridge columns is steel jackets. The USGS recently released updated hazard maps that require structural design in Western Washington to plan for increased levels of seismicity, reflecting the potential for the Cascadia Subduction Zone (CSZ) to generate large magnitude, long duration earthquakes. The ability of WSDOT’s bridge columns retrofitted with steel jackets to resist this increased earthquake hazard level is not well understood, and questions remain regarding the level of damage that would be sustained in a CSZ earthquake. If the level of retrofit is not sufficient to prevent collapse, the millions of dollars expended by WSDOT on retrofit will not deliver the intended results. This project will characterize the expected performance, ductility capacity, and collapse probability of steel jacket retrofitted bridge columns in CSZ earthquakes and will develop a simple tool that WSDOT can use to assess whether a standard steel jacket retrofit is adequate to resist a design level earthquake for each bridge column in its inventory.

Project Investigators:
Christopher Motter, Civil and Environmental Engineering, WSU
Adam Phillips, Civil and Environmental Engineering, WSU

Sponsor: WSDOT
WSDOT Technical Monitor: Bijan Khaleghi
WSDOT Project Manager: Mustafa Mohamedali
Scheduled completion:  September 2021

Linear Scheduling Evaluation and Best Practices, Phase 2

Traditional project scheduling methods provide overwhelming amounts of data for large projects. This can make the task of fully communicating project information to diverse audiences and communities challenging. In addition, WSDOT’s design teams, working with multiple and varied partners and internal specialists, need to be able to quickly grasp the nature of a project, its context, and the work activities, locations, and timing that will occur. Linear scheduling has the potential to be an extremely effective tool in tracking cost, duration, and appropriate justification and can enhance WSDOT’s current processes related to project cost risk assessment and value engineering. Other industries regularly use linear scheduling. Phase 1 of this study conducted a literature review of best practices related to linear scheduling for heavy civil engineering projects. In Phase II, the researchers will develop project performance metrics to quantify the benefits of using a linear scheduling program. They will also investigate available tools and software to provide vendor selection guidelines. The findings will build confidence in the adoption and use of a linear scheduling program to further improve project metrics.

Principal Investigator: Amy Kim, Civil and Environmental Engineering, UW
Sponsor: WSDOT
WSDOT Technical Monitor: Mark Gabel
WSDOT Project Manager: Mustafa Mohamedali
Scheduled completion: December 2021

Extending the SR 522 SPaT Challenge to Active Transportation Users

This project will give researchers hands-on experience with the connected transportation environment and interactions among pedestrians, bicycles, vehicles, and traffic signals. Specifically, this project will integrate data from traffic control system signal phase and timing (SPaT) broadcasts along SR 522 north of Seattle within an application (app) that pedestrians and bicyclists will use on their mobile devices. Pedestrians will be able to use the app to request right of way and receive information on the status of the pedestrian signal. Bicycle users will be able to indicate their presence to actuate the traffic signal. All users will also be able to send/receive better quality information on their location within a crosswalk, bicycle lane, pathway, or vehicle travel lane. The project not only has the potential to improve intersection operations but has clear implications for helping increase the safety of all non-motorized road users, particularly those with vision impairments and other disabilities.

Principal Investigator: Yinhai Wang, Civil and Environmental Engineering, UW
Sponsor: WSDOT
WSDOT Technical Monitor: Justin Belk
WSDOT Project Manager: Doug Brodin
Scheduled completion: June 2023

Seismic Retrofit of Hollow Piles

The overall goal of the proposed research is to design, and prove experimentally, methods to seismically retrofit prestressed concrete hollow pile-columns used in bridges.  WSDOT maintains approximately 25 bridges that are supported on hollow precast, prestressed concrete pile-columns. Most were constructed in the 1960s. The seismic performance of these bridges is in now question because the hollow sections have been shown to have little flexural ductility, which may cause them to fail prematurely. This project will determine the flexural strength and deformation capacity of a typical as-built, hollow, precast, pre-tensioned pile-column before retrofitting. Researchers will then develop a retrofit method, including design procedures, for the potential plastic hinge at the cap beam connection, and they will develop implementation procedures for the retrofit method. In addition, this project will create a simple numerical modeling tool that will allow WSDOT to rank existing bridges according to the risk that they pose to help it prioritize bridge retrofitting.

Principal Investigators:
John Stanton, Civil and Environmental Engineering, UW
Paolo Calvi, Civil and Environmental Engineering, UW

Sponsor: WSDOT
WSDOT Technical Monitor: Bijan Khaleghi
WSDOT Project Manager: Doug Brodin
Scheduled completion: December 2019

Freight Policy Transportation Institute at WSU

The purpose of the Freight Policy Transportation Institute at WSU is to undertake research on a variety of topics and issues that will improve our understanding of the importance of efficient and effective freight transportation, both to the national economy and to regions, states, and international trade.  Research topics address the need for improved intermodal freight transportation policies and implementable actions that would increase the effectiveness of intermodal transportation in lowering operating costs while also increasing the safety and decreasing the environmental impacts of freight transportation nationwide. Distributing the benefits of improved freight transportation performance to specific industries and sectors of the economy are important objectives of the Institute. The continuing focus of research projects falls generally under five themes: infrastructure investment and alternative financing/pricing, transportation security and freight efficiency, transportation and economic development, alternative energy sourcing and transportation systems, and freight transportation and international trade.

Principal Investigator: Eric Jessup, School of Economic Sciences, WSU
Sponsor: FHWA
Scheduled completion: Ongoing

TRAC