The Rio Vista Drive channel stabilization project in Fairfax County, VA involved stabilizing an existing drainage channel along Rio Vista Drive east of Haislip Lane. The project included excavating and grading the channel, installing a grass-lined V-ditch and rip-rap lined trapezoidal ditch, and adding endwalls and rip-rap to reduce flow velocity and erosion. Jute mesh was used to stabilize the banks and establish vegetation in the V-ditch. The project was substantially completed in May 2015 and improved drainage and water quality to the Occoquan Bay watershed.

1. A Fairfax County, VA, publication
Department of Public Works and Environmental Services
Working for You!
Rio Vista Drive Channel Stabilization
Contract No. CN3125900
Project No. SD-000031-043A
Task Order No. 22
Mount Vernon District
August 12, 2015

2. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization
Post Construction
Jute Mesh used to stabilized the banks

3. Rio Vista Drive Channel Stabilization
Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Mount Vernon District, Tax Map #118-1
Project Site

4. Project Details
Rio Vista Drive Channel Stabilization
Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Description:
The Rio Vista Drive channel stabilization project was substantially completed on May 18, 2015. The existing
roadside channel is located along the Northern side of Rio Vista Drive, east of Haislip Lane, and within the
Kane Creek Watershed. The project provides improvements to the existing drainage channel by stabilizing
the roadside ditch with a grass lined V-ditch and rip-rap trapezoidal ditch. The improvements will reduce the
flow velocity, provide stability, and enhance water quality along the steep slopes leading to the Occoquan
Bay.
Project Overview:
• Removing concrete rubble along the existing channel
• Excavating and grading the existing roadside channel
• Installing a V-ditch and rip-rap lined trapezoidal ditch
• Installing a soil retention mat to stabilize and establish the vegetated V-ditch
• Lining the trapezoidal ditch with rip-rap
• Installing an endwall at each of the existing and new concrete pipes
• Stabilizing the storm pipe outfall area with geotextile fabric and rip-rap
• Restoring the existing road to its original surface
Project Team:
• Maintenance and Stormwater Management Division – Jeff Vish
• Utilities Design and Construction Division - Yousef Rayyan
• Utilities Design and Construction Division - Howard Champ
• Land Survey Branch - Gregory Harper

5. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization
Pre-Construction

6. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization
Post Construction

7. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization
Pre-Construction

8. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization
Post Construction

9. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Pre-Construction
Rio Vista Drive Channel Stabilization

10. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization
Post Construction

11. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Pre-construction
Rio Vista Drive Channel Stabilization

12. Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Post Construction
Rio Vista Drive Channel Stabilization

13. Before After
Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization

14. Additional Information
For additional Information, please call
www.fairfaxcounty.gov/dpwes
Ben Boxer, Public Information Officer
703-324-5880, TTY 711
Ben. Ben Boxer, Public Information Officer
703-324-5880, TTY 711
Ben. Ben Boxer, Public Information Officer
703-324-5880, TTY 711
Ben.Boxer@fairfaxcounty.gov
Irene Haske, Public Information Officer
703-324-5500, TTY 711
Irene.Haske@fairfaxcounty.gov
Capital Facilities/Utilities Design and Construction Division/Transportation & Stormwater Construction Branch
Rio Vista Drive Channel Stabilization