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 [[Category:120 Interstate Maintenance Expectations|120.7]]

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==120.7.1 [[:Category:773 Pipe, Box Culvert and Miscellaneous Drainage Maintenance|Pipes]] and Culverts==

===Performance Expectation===
Pipes and culverts shall be structurally sound and function as intended. They shall be kept clear and free of silt, debris and vegetation.

===Performance Measures===
Visual inspections will be conducted on randomly selected tenth-mile segments in the spring to determine if the pipes and culverts are performing as intended.

===Performance Objectives===
90% of the cross-sectional area shall be unobstructed and functioning as intended. No visible evidence of roadway settlement shall exist.

{| align="center"
|-
|[[image:120.7.1.1.jpg|350px|thumb|<center>'''Good'''</center>]]||[[image:120.7.1.2.jpg|350px|thumb|<center>'''Poor'''</center>]]
|}

==120.7.2 [[:Category:614 Drainage Fittings (Grate Inlets)|Inlets]] and Drains==

===Performance Expectation===
Inlets and drains shall be structurally sound and function as intended. They shall be kept clear and free of silt, debris and vegetative growth.

===Performance Measures===
Visual inspections will be conducted on randomly selected tenth-mile segments in the spring to determine if the inlets and drains are performing as intended.

===Performance Objectives===
90% of the inlet opening and basin outlet opening shall be unobstructed, the unit shall be structurally sound, and the inlet grates and access covers (where applicable) shall be present and functioning as intended. No evidence of ponding shall exist.

{| align="center"
|-
|[[image:120.7.2.1.jpg|350px|thumb|<center>'''Good'''</center>]]||[[image:120.7.2.2.jpg|350px|thumb|<center>'''Poor'''</center>]]
|}

==120.7.3 [[:Category:609 Paved Drainage|Curbs and Gutters]]==

===Performance Expectation===
All curb and gutter sections shall be structurally sound and function as intended. They shall be kept clear and free of silt, debris and vegetation.

===Performance Measures===
Visual inspections will be conducted on randomly selected tenth-mile segments in the spring to determine if the curbs and gutters are performing as intended.

===Performance Objectives===
100% of the gutter length shall be free of obstructions that would impede drainage flow. 90% of the curb and gutter area shall be free of structural distress. No evidence of ponding shall exist.

{| align="center"
|-
|[[image:120.7.3.1.jpg|350px|thumb|<center>'''Good'''</center>]]||[[image:120.7.3.2.jpg|350px|thumb|<center>'''Poor'''</center>]]
|}

==120.7.4 [[231.6 Roadside Ditches|Ditches]]==

===Performance Expectation===
Roadside, outfall, and median ditches shall be unobstructed and function as intended.

===Performance Measures===
Visual inspections will be conducted on randomly selected tenth-mile segments in the spring to determine if the ditches look good and are performing as intended.

===Performance Objectives===
90% of the cross-sectional area shall be unobstructed and functioning as intended. 90% of any paved ditch shall be structurally sound and no portion shall exhibit signs of undermining. No erosion or scour exceeding 12 in. deep and 10 ft. long shall exist in unpaved ditches. No evidence of ponding shall exist in unpaved ditches.

{| align="center"
|-
|[[image:120.7.4.1.jpg|350px|thumb|<center>'''Good'''</center>]]||[[image:120.7.4.2.jpg|350px|thumb|<center>'''Poor'''</center>]]
|}

[[Category:120 Interstate Maintenance Expectations|120.7]]

120.7 Drainage - Revision history

EPGsysop: Replacing page with '{|style="padding: 0.3em; margin-left:15px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="280px" align="center" |- |'''This article ha...'

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