March 6th, 2012
TO LIFEOptimize Mobility, by Catherine Higgins.
Highways for Life is a Federal Highways Administration funded program to promote the use of new technologies to improve the transportation system.
Nationwide, our transportation system is facing increased ADT which can cause greater than anticipated wear on roads and bridges. Transportation research has lead to safer practices and new features that can save lives. With increased traffic, construction that shuts down highways becomes very inconvenient for the traveling public.
New tested technologies that can extend the life of highway infrastructure or improve safety are ready for widespread use – that is, if transportation agencies know about the technologies and have access to funding needed for deployment.
HfL provides up to twenty percent of the total project budget and expertise needed so transportation agencies can adopt market-ready technologies. Projects must serve at least one or all of three main goals: improve safety during and after construction, reduce congestion caused by construction, and improve the quality of the highway infrastructure. The performance goals are meant to serve road users and represent “the best of what we can do,” according to the HfL website.
This year, HfL will support 17 projects being built in the next several months, including an pre-cast bridge in Idaho, an ACS signal system in New Jersey and a DDI in Wyoming. Many of the projects will involve showcase events that will allow people from other transportation agencies to see the new technologies being employed.
UDOT received support for a HfL project using Geosynthetic Reinforced Soil – Integrated Bridge System on I-84 over the Echo Frontage Road. UDOT is a leader in using accelerated bridge construction to reduce inconvenience and delay caused by construction. However, this project is different than other ABC projects UDOT has employed, according to Bridge Design Engineer Rebecca Nix. “The design removes the traditional concrete abutments and the superstructure bears directly on GRS. Using GRSwill allow the bridge to settle uniformly with the adjacent roadway providing a smooth transition onto the structure.”
Construction of the project will be phased to allow traffic to use the roadway during construction. The superstructure will be built in the median, and traffic will be routed over the structure to allow for the construction of the modular block wall foundations. Once the foundations are completed, the superstructure will be slid into place.