Four Mile Run Restoration Project Update Aurora Highlands Civic - PowerPoint PPT Presentation

Four Mile Run Restoration Project Update Aurora Highlands Civic Association July 13, 2016

10 th Anniversary of the adoption of the Four Mile Run Master Plan Significant Milestones: § 2009: The City and County hold a competition for design of a pedestrian/cyclist § 2000: City, Arlington & NRVC began to bridge. explore the stream’s water quality and recreation potentials; USACE partnered § 2011: Conservatory Building opens and with team to conduct a feasibility study on adjacent area renovated; Four Mile Run Park a restoration plan . Farmer’s and Artisans Market opens. § 2001: US Congressman Moran sought § 2012: Buro Happold begins bridge design. allocation through EPA of $1M for development of the Four Mile Run Master § 2012: Design scope for the demonstration Plan. project changes based on new USACE requirements. § 2006: The City and County adopt the § 2015: Construction begins to restore Master Plan. Alexandria’s wetlands. § 2008: STAG grants appropriated for § 2016: Alexandria wetlands project complete demonstration project & design begins. & Arlington shoreline restoration begins. § 2009: The City and County adopt the Design Guidelines.

Four Mile Run Restoration Project Overview • Naturalize the banks along the corridor and improve access to the stream through overlooks and terracing • Replace rip-rap with vegetation and create Living Shorelines on Arlington side • Establish historical tidal wetland condition in Four Mile Run Park in Alexandria 3

Alexandria Wetland Project * Wetland restoration * Soil grading * Invasive plant removal * Native plantings * New pervious surface trail 4

Alexandria wetlands project completed and trail installed in Spring, 2016 5

Arlington Living Shorelines Project * Remove rip rap stone * Create living shorelines * Remove invasive plants * Replant with natives * Add viewing platform * Re-build bike trail 6

Site 2 Design Section 7

Site 2 Plantings * Living shoreline: Arrow Arum, pickerelweed, broadleaf arrowhead, river bulrush, common three-square Pickerelweed Arrow Arum Three-square * Upland meadow: Eastern smooth beardtongue, common milkweed, bee balm, grass leaved goldenrod, black eyed susan 8 Bee balm Beardtongue Black eyed susan

Schedule Site 2 * Initial bid June, 2015 (only one bid received) * Project plans had to be revised for improved site access and were re-bid in May, 2016 * Responsible bid was received, and construction contract approved June 18 * Construction start estimated August/September, 2016 * Bike trail on Arlington side will be closed for construction (approximately 1 year) * Detour on Alexandria trail 9

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Watermarks § The symbolism of water and the application of the color blue is essential to the Watermark design. § All Watermarks will be cast-in-place concrete integrated with a blue pigment. § 23 Watermarks are proposed, 17 in Arlington and 6 in Alexandria § 1 Watermark will be installed with the construction of Plan B. 11

WPCP Fence Enhancement Add image of award 12

Pedestrian Bridge 13

Questions? Doug Stephens 703-228-3959 dstephens@arlingtonva.us