Parks

Crabtree Creek Trail Retaining Wall Project

The City of Raleigh has closed the Crabtree Creek Greenway at mile marker 12 between the trail access at North Hills Drive and the Mine Creek Trail and Crabtree Creek Greenway intersection. This map shows the location of the closed section of the trail and the detour on North Hills Drive. High levels of rain and stormwater runoff caused excessive erosion and damage to the streambank supporting the retaining wall adjacent to Crabtree Creek and have made this section of the Crabtree Creek Greenway hazardous for public access. 

The detour will follow the southern side of North Hills Drive for a half-mile and connect to the Mine Creek Trail access. Trail users can continue north, across North Hills Drive to Shelly Lake Park, or south, along the Mine Creek Trail, to reconnect with the Crabtree Creek Trail at the “Z” Bridge, structure #37. For questions about this project or closure, please contact David Bender at 919-996-4798 or email David Bender.

In February 2018, an initial approach to replacing the existing retaining walls along the Crabtree Creek Greenway was to utilize segmental block wall construction.  Plans and bid documents were prepared and the project was let to construction, but prior to the project being awarded severe bank scour occurred at the project site.  The scour of the banks made the use of segmental block walls unfeasible and another approach had to be investigated to replace the failing walls.  
The revised design approach to replacing the wall adjacent to Crabtree Creek will utilize piles embedded into the rock below the stream and a sheet pile wall placed behind the piles.  To counteract overturning of the wall, tie back anchors will most likely be required.  

Project Details

 
Type:
Greenways and Trails
Budget:
$530,561
Contractors:
Wetherill Engineering, Inc (Design, Bidding Assistance and Construction Administration), Intercoastal Marine, LLC (Contractor)

Planning

This phase is complete.

Design

This phase is complete.

Construction

The City of Raleigh Parks, Recreation and Cultural Resources Department (PRCR) advertised the construction bid for the Crabtree Creek Greenway Retaining Walls project, 274-PR-CrabtreeWalls-112718, on Nov. 27, 2018. Three bids were received and opened on Feb. 12. The lowest, most responsive, responsible bidder was Intercoastal Marine, LLC.

On August 15, 2019, the draft anchored king pile/sheet pile combined retaining wall design was reviewed and approved by the City's design consultant (Wetherill Engineering) and COR staff.  The contractor; Intercoastal Marine, Inc. will begin mobilization of material and equipment following the completed fabrication of proprietary wall design components in mid-September.

The Crabtree Creek Greenway Retaining Wall project is located at mile marker 12.5 between the trail access at North Hills Drive and the Mine Creek Trail. While this section of trail is currently closed, a detour is in place that utilizes sidewalks and on street facilities. Several rain events have caused excessive erosion and damage to the streambank supporting the retaining wall adjacent to Crabtree Creek and has made this section of trail hazardous for public access.  
The City of Raleigh Parks, Recreation and Cultural Resources Department (PRCR) advertised the construction bid for the Crabtree Creek Greenway Retaining Walls project, 274-PR-CrabtreeWalls-112718, on November 27, 2018. Three (3) bids were received and opened on February 12, 2019. The lowest, most responsive, responsible bidder was Intercoastal Marine, LLC. 

 

 

Complete

Phase details coming soon.


History

The Capital Area Greenway System was first adopted by City Council in 1976. This plan proposed a system of linear parks located primarily along rivers, streams, and creeks, and included the opportunity for an interconnected system of pedestrian trails across the region.

Schedule

Date Activity
Spring 2019 Construction Contract Executed
September 2019 Start Construction
May 2020 Estimated Construction Completion

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