Improves roadside-shoulder widening and ditch restoration.
Improves isolated deficient curves, hill crests and intersections.
Includes new pavement and gravel shoulders.
Includes base patching.
May include intersections paving.
Places beam guards where needed.
Highway needing improvement:
Maintains specific areas of potholes, extensive cracking,
uneven pavement, low shoulders and rutting.
How is deterioration of a highway measured?
Deterioration of a highway is measured by:
1. Pavement Serviceability Index (PSI): describes how smooth the
2. Pavement Distress Index (PDI): describes how cracked the pavement
3. Pavement rutting: describes the potential for hydro-planing.
Public awareness is also an important tool which keeps WisDOT
informed of deteriorating roads in need of repair.
Safety is a top concern
Safety problems can often be addressed by adding or upgrading
traffic signals, installing beam guards, adding turn lanes or
upgrading railroad crossing warning devices. The road may also be
widened and curves may be flattened to increase sight distances for