PRD Culvert
What is a Culvert?
An underground pipe that is installed beneath a road to allow water to flow without impacting or pooling on the road’s surface. Culverts help to divert the water by collecting it via pipes and draining into a larger drain system or the ground. This mechanism helps to keep the roadway safe for vehicle traffic and prevent drainage problems.
How is the culvert condition evaluated?
Culverts are evaluated on a scale of 0 (good condition) to 6 (needs rehabilitation). To determine the culvert’s rating, staff evaluate its condition based on two factors: the presence of holes (0-3), and the presence of rust (0-3). Typically, a cumulative score four or more requires repair.
Material Used for Culverts
- RCP - Reinforced Concrete Pipe
- CMP - Corrugated Metal Pipe
- HDPE - High Density Polyethylene
- PVC - Polyvinyl Chloride
RCP - Reinforced Concrete Pipe
Reinforced Concrete Pipe (RCP) marries the best features of concrete and steel, with the concrete pipe managing compressive forces while the steel cages provide tensile strength. RCP has a proven long service life and offers resiliency and sustainability that make it a classic choice for water transmission, sanitary sewer systems and storm drainage. Its high-load capacity supports both dead loads and live loads above.
CMP - Corrugated Metal Pipe
Corrugated Metal Pipe (CMP) is a type of pipe that is made from metal, typically steel or aluminum, that has been corrugated or folded to create a smooth interior and a stronger structure. These pipes are commonly used for stormwater drainage, culverts, and other infrastructure applications. They are known for their durability and ability to withstand harsh weather conditions, as well as their resistance to corrosion.
HDPE - High Density Polyethylene
High Density Poly Ethylene (HDPE) is a thermoplastic
polymer made from petroleum. As one of the most versatile plastic
materials around. Known for its outstanding tensile strength and
large strength-to-density ratio, HDPE plastic has a high-impact
resistance and melting point.
HDPE is one of the most commonly
used plastics in the United States. It creates no harmful emissions
during its production or when HDPE plastic products are used by
consumers. Additionally, the material does not leak any kind of
toxic chemicals into the soil or water.
PVP - Polyvinyl Chloride
Popularly known as PVC, is a high strength white, brittle solid thermoplastic that is lightweight. There are several versions of polyvinyl chloride, which include plasticized or flexible, unplasticized, perchloro vinyl, molecular oriented, and modified. The key properties of the PVC polymer are dielectric strength, durability, flame resistant, low cost, and abrasion and chemical resistance.
Culvert Maintenance
Malfunctioning culverts can create hazardous traffic conditions and a blocked culvert can cause water to pond on roadways instead of being properly diverted. In addition, periodic maintenance of culverts allows property owners to become aware of issues before they create hazardous road conditions, property damage or cause an emergency road closure. Property owners are asked to examine their culverts for potential issues and follow the recommended guideline below.
- Clean debris from inlet/outlet.
- Inspect trash rack to ensure it is in good working condition.
- Review upstream of culvert for potential erosion issues.
- Inspect pipe for any dents or damages.
Click Here for a copy of the Culvert Self-Inspection letter.
PRD Culvert Information
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List of PRD with culverts
- PRD 6 Pauma Valley - 17 culverts
- PRD 8 Magee Road - 8 culverts
- PRD 9B Harris Annex - 3 culverts
- PRD 10 Davis Drive - 2 culverts
- PRD 11A Bernardo Lane - 1 culvert
- PRD 11C Felicita Lane/Morningstar Terrace - 1 culvert
- PRD 12 Lomair - 4 culverts
- PRD 13A Pala Mesa Zone A - 41 culverts
- PRD 13B Pala Mesa Zone B (Stewart Canyon) - 5 culverts
- PRD 16 Wynola - 8 culverts
- PRD 18 Harrison Park - 18 culverts
- PRD 20 Daily Road - 74 culverts
- PRD 21 Pauma Heights - 28 culverts
- PRD 24 Mount Whitney - 2 culverts
- PRD 30 Royal Oaks Drive/Carroll Lane - 1 culvert
- PRD 46 Rocoso Road - 2 culverts
- PRD 49 Sunset Knolls - 2 culverts
- PRD 53 Knoll Park Lane Extension - 7 culverts
- PRD 55 Rainbow Crest Road - 17 culverts
- PRD 60 River Drive - 2 culverts
- PRD 63 Hillview Road - 4 culverts
- PRD 70 Mountain View Place - 2 culverts
- PRD 77 Montiel Truck Trail - 13 culverts
- PRD 80 Harris Truck Trail - 13 culverts
- PRD 94 Roble Grande Road - 1 culvert
- PRD 95 Valle Del Sol - 4 culverts
- PRD 99 Via Allondra/Via Del Corvo - 2 culverts
- PRD 101 Johnson Lake - 1 culvert
- PRD 101A Hi Ridge - 6 culverts
- PRD 102 Mountain Meadow - 27 culverts
- PRD 103 Alto Drive - 2 culverts
- PRD 104 Artesian Road - 6 culvert
- PRD 105 Alta Loma Drive - 3 culverts
- PRD 105A Alta Loma Drive Zone A - 2 culverts
- PRD 117 Legend Rock - 6 culverts
- PRD 123 Mizpah Lane - 5 culverts
- PRD 125 Wrightwood Road - 2 culverts
- PRD 126 Sandhurst Way - 1 culvert
- PRD 130 Wilkes Road - 22 culverts
- PRD 133 Ranch Creek Road - 3 culverts
- PRD 134 Kenora Lane - 1 culvert
- PRD 1003 Alamo Way (DISSOLVED) - 2 culverts
- PRD 1005 Eden Valley - 3 culverts
- PRD 1010 Alpine Highlands - 9 culverts
- PRD 1012 Millar Ranch Road - 2 culverts
- PRD 1013 Singing Trails Court - 2 culverts
- PRD 1014 Lavender Point Lane - 1 culvert
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List of PRD with no known culverts
- PRD 11D Cimarron Terrace
- PRD 22 West Dougherty Street
- PRD 23 Rock Terrace
- PRD 38 Gay Rio Terrace Road
- PRD 45 Rincon Springs Road
- PRD 50 Knoll Park Lane
- PRD 54 Mount Helix
- PRD 61 Green Meadow Way
- PRD 75A Gay Rio Drive Zone A
- PRD 75B Gay Rio Drive Zone B
- PRD 76 Kingsford Court
- PRD 78 Gardena Way
- PRD 88 Ease Fifth Street
- PRD 90 South Cordoba Street
- PRD 106 Garrison Way
- PRD 127 Singing Trails Drive
- PRD 1008 Canter Road
- PRD 1011 La Cuesta
- PRD 1015 Landavo Road
- PRD 1016 El Sereno
- PRD 1017 Kalbaugh
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