Articles in this Issue
Swimming with the Fishes: Recycled Concrete Finds New Life Supporting Maryland's Marine Habitat
Fish and other aquatic life in Maryland's Chesapeake Bay
have vibrant new marine habitats to call home, thanks to concrete recycled from
the former Woodrow Wilson Bridge that was used to create five major fish reefs
in the bay and the Potomac River.
Improving Bridge Safety and Reliability with LRFR
It started with LRFD, but now get ready to meet LRFR. The
nationwide implementation of the Load and Resistance Factor Design (LRFD)
Specification for bridges has resulted in greater reliability of bridges, more efficient
designs, and a more uniform factor of safety. Now the Load and Resistance
Factor Rating (LRFR) system is building on these advances to improve the safety
of bridges through the use of state-of-the-art rating methodology for bridge
loads.
FHWA Introduces Quality Assurance Specification Course
A new online course available from the Federal Highway Administration’s (FHWA) National Highway Institute (NHI) provides participants with an introduction to statistical analysis and the development of statistically valid quality assurance (QA) specifications for highway construction projects. By using statistically valid QA specifications, agencies can obtain a more uniform product, better link project payment to the product received, and reward contractors for quality. The free 8-hour course, SpecRisk Quality Assurance Specification Development and Validation (Course No. FHWA-NHI-134070), also introduces SpecRisk, a new software program available from FHWA that enables users to successfully develop statistically valid specifications.
Achieving Better Pavement Design with WIM Technologies: FHWA Workshop Offers Step-by-Step Guide
From site selection to data collection and validation, the
Federal Highway Administration's (FHWA) comprehensive Weigh-in-Motion (WIM) and
Traffic Workshop demonstrates the complete process of using WIM technologies to
obtain quality traffic data, with the ultimate goal of using the data as inputs
to the Mechanistic-Empirical Pavement Design Guide (M-E PDG) software.
WIM equipment can be used to collect data on such factors as vehicle and axle
weights, axle spacing, speed, and vehicle class.
Highway Technology Calendar
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