Line 20:
Line 20:
*Side drainage ditches are often narrow, poorly graded,and can be difficult for homeowners to maintain
*Side drainage ditches are often narrow, poorly graded,and can be difficult for homeowners to maintain
*Utilities are often in separate trenches rather than a combined utility trench
*Utilities are often in separate trenches rather than a combined utility trench
+
+
{|class="wikitable"
+
|+ Opportunities for rural cross section
+
|-
+
! Within the roadway
+
! Within the boulevard
+
|-
+
|Use of [[permeable paving]] within the roadway is not economical when there are adjacent [[swales]] to filter and infiltrate runoff
+
|
+
*[[Bioswales]] or the use of [[perforated pipes]] beneath grass swales can reduce the nuisance problems associated with conventional swales like standing surface water and steep slopes
+
*Permeable pavement systems can be used to stabilize and improve degraded shoulders
+
*Converting degraded ditches to [[enhanced grass swales]] is the simplest LID improvement to make to residential rural cross-section roads. Driveway culverts can be slightly raised to provide storage and encourage infiltration.
+
|}
+
+
+
===Typical opportunities for rural cross section===
===Typical opportunities for rural cross section===
Line 26:
Line 42:
'''Within the boulevard:'''
'''Within the boulevard:'''
−
*[[Bioswales]] or the use of [[perforated pipes]] beneath grass [[swales]] can reduce the nuisance problems associated with conventional swales like standing surface water and steep slopes
−
*Permeable pavement systems can be used to stabilize and improve degraded shoulders
−
*Converting degraded ditches to [[enhanced grass swales]] is the simplest LID improvement to make to residential rural cross-section roads. Driveway culverts can be slightly raised to provide storage and encourage infiltration.
===Urban cross-section===
===Urban cross-section===