The Existing Highways component of the SHR sub-program deals with
improvements to the non-Corridors 2020 Backbone portion of the state
highway system. It funds "3R" improvements—resurfacing,
reconditioning and reconstructing existing roadways—and the minor
addition of lanes, traffic and safety improvements, and minor
realignments of roadway.
The types of improvement are categorized as resurfacing,
reconditioning, pavement replacement and reconstruction.
Resurfacing: rehabilitating the surface of a pavement to
provide a smoother ride and to extend the pavement's structural
life. This can also include pavement widening and/or shoulder
paving to improve safety and reduce shoulder maintenance costs.
Reconditioning: resurfacing and, in addition, improving an
isolated grade, curve or intersection.
Pavement replacement: the highest type of
"resurfacing" whereby the existing pavement structure is
replaced with a new one. This does not include widening of the
Reconstruction: total rebuilding of the highway to provide a
safer facility, to improve geometrics (i.e., longer passing and
stopping sight distances, broader turning radii, additional lanes
at intersections) and increased traffic-handling capabilities.
Other benefits include a smoother ride, reduced travel time and
lower maintenance costs.
County highway committees, MPOs, local officials, legislators and
the public all suggest candidate projects. In addition, any projects
considered, but not selected, in the last program are also included
WisDOT regions use a computerized model of the state highway
system, coupled with occasional field reviews, to determine where
deficient segments either exist or will exist in the future, and to
then develop candidate improvement projects that will address those
deficiencies. Regions evaluate candidate improvement projects by
considering such things as priority of need, use and local interest.
They also re-evaluate projects in the last four years of the
previous Six Year Program to confirm that project scopes and
schedules are still appropriate. As a result, some projects can be
either advanced or deferred in the next Six Year Program.
Regions submit their recommended projects to WisDOT's central
office in Madison, where they are examined for compliance with
guidelines and combined into a statewide program.
Questions about the content of this
Bureau of State Highway Programs,
Last modified: July 17, 2012
State Highway Rehabilitation Subprogram components: