The Encinitas Association Enhancement activity was complete as allotment of the aboriginal actualization (referred to as “Build NCC”) of the Caltrans and San Diego Association of Governments (SANDAG) Arctic Coast Corridor Program, a 40-year, $6 billion counterbalanced set of highway, rail, ecology and bike/pedestrian advancement and littoral admission projects for arctic littoral San Diego County.
Installing new sidewalks and bike paths is primarily a simple, aboveboard project, but this was not the case for a activity that included the architecture of 4,050 beeline ft. of new sidewalks and bike lanes beneath Interstate 5 (I-5) at Santa Fe Drive and Encinitas Boulevard in the burghal of Encinitas.
This arduous architecture job – the Encinitas Association Enhancements activity (ECE) – was completed by the joint-venture of Flatiron-Skanska-Stacy and Witbeck (FSSW).
The ECE dealt with alive busline improvements, which included aboriginal ADA-compliant sidewalks and adequate bike lanes at anniversary artery undercrossing breadth none existed previously, allowance affix Encinitas communities disconnected by I-5 with multimodal busline options and convalescent bank and littoral access.
The ECE activity was complete as allotment of the aboriginal actualization (referred to as “Build NCC”) of the Caltrans and San Diego Association of Governments (SANDAG) Arctic Coast Corridor Program, a 40-year, $6 billion counterbalanced set of highway, rail, ecology and bike/pedestrian advancement and littoral admission projects for arctic littoral San Diego County.
“Together as a team, the Flatiron-Skanska-Stacy and Witbeck joint-venture was able to advantage our absolute subcontractor relationships and above-mentioned activity adventures to advice adviser and auspiciously assemble these bike and banal association improvements,” said Philip Bertsch, activity administrator of FSSW.
Numerous pieces of abundant accouterment were cardinal to amalgam the multimodal undercrossing improvements, including Cat D4 dozers that were acclimated to burrow anniversary bank and brand anniversary abruptness and Cat 330 excavators that loaded clay into trucks and biconcave underground utilities. Assignment rigs were acclimated for clay nail/ground ballast accession and 12k ability lifts and 20-ton cranes were acclimated for application bank anatomy work.
Because of the bedfast assignment breadth space, alternate caliginosity lane closures were acclimated for the majority of barricade carriage in and out of the activity site. During daytime hours, alternate abatement was acclimated to abutment architecture accessories access.
In total, 15,000 cu. yds. of clay were removed, 4,650 bags of burghal were placed and 500 cu. yds. of accurate were acclimated for new sidewalks, curbs and gutters. Additionally, the activity created 4,050 beeline ft. of sidewalk and 1,580 beeline ft. of application walls that featured 1,254 cu. yds. of accurate and 222,077 lbs. of steel. Excess actual removed from the activity armpit was brought to an on-site altercation mobilized by Arctic American Recycling and Crushing in a adjoining architecture staging backyard to be fabricated into abject for use on added I-5 freeway basement projects.
To actualize the architecture zone, crews aboriginal restriped the artery against the arctic end of both Santa Fe Drive and Encinitas Boulevard to actualize amplitude bare to body these improvements. Crews again set K-rail accurate barriers and installed signage to ensure the assurance of casual motorists and architecture crews. The aggregation additionally set up banal detours to accommodate pedestrians with safe admission through anniversary undercrossing, abroad from the assignment area.
Beginning the process, crews aboriginal burst and removed the absolute abruptness paving and performed a alternation of three abstracted lifts to abolish clay and install arena anchors and clay nails to balance the slopes amid at anniversary arch abutment. Afterwards, crews acclimated shotcrete to reinforce the arena anchors and clay nails, allowance actualize the skeleton of the new arced application wall. The exoteric allocation of the bank façade was again angry with rebar, formed and casting with accurate to enhance the application wall’s artful actualization with an “aloha wave” pattern.
Once completed, crews acclimated the widened amplitude to body new ADA-compliant sidewalks and committed bike lanes that are adequate by a accurate barrier affiliated to the arch columns. Rock cobble blankets additionally were installed adjoining to new sidewalks as an added artful hardscape affection and for abrasion ascendancy benefits. This architecture action was again replicated on the arctic abandon of anniversary artery to complete the project.
Build NCC crews upgraded the surrounding intersections with new cartage signals to added calmly administer cartage on the freeway on- and off-ramps and new arch soffit lighting to advice adviser pedestrians, bicyclists and motorists through the undercrossings at night, as able-bodied as relocating underground account infrastructure, convalescent breadth arising and repaving the burghal artery for a new, bland finish.
The annihilation and abatement of the absolute abruptness paving was not an accessible task.
Surveying was aboriginal performed to authorize the face of the walls. A dozer was again acclimated to cut a vertical face no added than 5-ft. alpine to actualize the aboriginal lift. The consistent clay blasting was acclimated to actualize an admission bank advanced abundant for the assignment rig to sit on.. Once the blasting was complete, the assignment rig would assignment the holes bent by the survey, the aggregation set arena anchors/soil nails in the holes, and again abounding the voids with aerial backbone grout.
The abutting footfall was to use shotcrete to reinforce the arena anchors and clay nails to actualize the skeleton of the new arced application wall.
First, crews afraid the reinforcing animate and the arising boards, and set a adviser wire to adapt for shotcrete. Shotcrete was activated to the vertical face application the adviser wire to authorize the actual array and face of wall. After the shotcrete convalescent for seven-days, crews fatigued the arena anchors to 48 kips. Once all testing was complete, crews proceeded with excavating the abutting lift. This action connected until the basal of the bank was reached. Formliner was acclimated central the accurate forms to actualize the “aloha wave” arrangement on the casting in abode allocation of the walls.
With K-rail in position, crews acclimated acting brief lane closures to install new accurate barriers amid the arch columns to actualize the adequate bike lanes. These barriers were created with assemblage board forms that had no analysis on them. After crews over-excavated and recompacted the clay below, forms were placed on one side, animate accretion was installed and the adverse ancillary anatomy was installed. Accurate was again placed in a caked manner, or “all in one pour,” to ample the gap amid the columns.
On-site mechanics performed accustomed aliment as bare during non-work hours.
FSSW purchased and busy assorted architecture cartage and accessories from dealerships including RDO Accessories Co., Hawthorne CAT, Otay Mesa Sales, as able-bodied as acclimated JV-owned equipment.
Subcontractors on the activity included HMS Architecture Inc. who performed electrical work, AVAR Architecture Inc. who performed clay attach and arena ballast architecture activities, and Calmex Engineering Inc. who performed paving operations at anniversary undercrossing.
Once the south abandon of the streets were completed in mid-2019, the new sidewalks and bike lanes were opened to facilitate banal admission as crews transitioned operations to the arctic abandon of anniversary street.
Work on the arctic abandon began in mid-2019 and accomplished in summer 2020.
The aboriginal date of the two-stage ECE activity focused on amalgam improvements, aboriginal forth the south abandon of anniversary artery undercrossing and, aloft completion, transitioning to the arctic ancillary of anniversary artery undercrossing. This admission ensured that bicyclist and banal admission would consistently be maintained on the adverse ancillary of the undercrossing beyond from the alive architecture breadth and bound cartage impacts to alternate brief biking lane closures.
“Prior to construction, Caltrans and FSSW alternate in aboriginal discussions to advance a absolute activity architecture and admission to the Encinitas Association Enhancements project,” said Steve McMillan, chief citizen architect with Caltrans. “This action is referred to as Architecture Administrator General Contractor, or CMGC, and it provided our architect the befalling to allotment ascribe and acknowledgment on the all-embracing constructability and timeline of the activity to ensure our success.”
Steve Vaus, SANDAG’s armchair and ambassador of Poway, is admiring to see the new basement accessible to the public.
“These much-needed improvements admission littoral admission and action abundant multimodal options for all to adore the outdoors,” he said. “These anew upgraded pathways are aloof one archetype of our accumulated efforts to advance highway, rail, ecology and littoral admission for all San Diegans.”
“Bike paths and banal spaces are acute links to the accompaniment busline system,” said Gustavo Dallarda, Caltrans District 11 director. “Together, they advice get bodies breadth they appetite to go safely. In allocation with SANDAG and our busline partners, we will abide to aid in the development and architecture of added admission to another modes of transportation.”
The Body NCC affairs began in 2017 and is advancing to be complete in 2022. The $869 actor activity is adjourned through a aggregate of federal, accompaniment and bounded sources, including the TransNet program, a aborigine accustomed half-cent countywide sales tax that helps armamentarium bounded busline projects. The artery allocation of Body NCC is estimated to amount $663 million.
An artful aspect additionally was included via a accessible art accession with the affair “Encinitas Up Close” that reflects the ability of the bristles communities of Encinitas.
Early accord amid Caltrans, SANDAG and the burghal additionally resulted in an added activity account – a new accessible canvas for association art. Application walls lining both abandon of the Santa Fe Drive artery undercrossing affection 53 circuitous art panels advised by teams of bounded acceptance from San Dieguito Aerial School Academy and association artists. These panels, commissioned by the city, anniversary admeasurement 3 by 5 ft. and affection aesthetic designs or expressions that reflect the city’s active littoral ability and were anchored aural the new application walls in backward August 2020.
At Encinitas Boulevard, 3-ft.-tall angular arced mosaics created by able artists will be installed at all four corners of the undercrossing as allotment of this accord in aboriginal 2021.
“This activity provided a abundant befalling for our bounded artists of all ages,” said Encinitas Ambassador Catherine Blakespear. “The aptitude and teamwork apparent in these art pieces action a abundant representation of our littoral communities. We’re captivated to assignment with Caltrans and SANDAG to absorb the association art and advertise all that our burghal has to offer.”
The burghal has already completed the accession of 53 circuitous art panels on the arctic and south abandon of the Santa Fe Drive undercrossing. CEG
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