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Smithsonian
National Zoological Park
Perimeter Infill Fencing Project
Combined Preliminary and Final Design -Perimeter Fencing
Submission to the National Capital Planning Commission
SF #1533110
March 7, 2019
Table of Contents
Consultant Team
Ayers Saint Gross
Baltimore, MD
Dharam Consulting
Philadelphia, PA
GHD Engineering
Chantilly, VA
Michael Vergason Landscape Architects
Alexandria, VA
RK&K
Baltimore, MD
ORCA Consulting
Clermont, FL
Smithsonian
Michelle Spofford,
Architect + Senior Planner
(202) 633-6558
1 Introduction and Purpose 1
2 Background - Master Plan 2
3 Visitor Access and Safety: Planning & Design Concept Development 3
4 Existing Conditions - Animal, Pedestrian & Vehicular 5
5 Proposed Fencing Infll 6
6 Fencing Infll Project Segments 14
THIS PAGE INTENTIONALLY LEFT BLANK
Figure 1 - Existing Ornamental Fence at Lower Zoo Entry
Introduction and Purpose 1 The Smithsonian Institution (SI) is developing plans to infll their perimeter
fencing to improve security and the visitor experience at the National Zoological
Park (NZP or Zoo). SI has performed several studies that have analyzed the
existing conditions, defned goals and requirements, proposed strategies, and
developed concepts for this goal.
The proposed fencing outlined in this submission builds upon earlier perimeter
containment and animal fencing work approved by both the Commission of Fine
Arts (CFA) and the National Capital Planning Commission (NCPC) in 2012.
This submission proposes security fencing required to close gaps in the present
perimeter fence in the central visitor area of the Zoo. The primary difference
between the scope of this project and previously implemented fencing work is
the focus on pedestrian safety and access. Previous fencing work focused on
animal containment and satisfying Association of Zoos and Aquariums (AZA)
requirements.
As a result of increased pedestrian safety concerns, this submission has
also incorporated vehicular-rated fencing to deter a vehicle from driving into
pedestrians gathered near entrances.
Perimeter Infll Fencing Project 1
Figure 2a - Master Plan Proposal (2008)
Background - Master Plan 2 The Smithsonian National Zoological Park is a free-of-charge zoo and local resource that
serves many user groups including: zoo enthusiasts and tourists; neighborhood families;
recreational joggers and walkers; organized school and tour groups; and special event
visitors. Seasonal and special events result in visitation surges that occur around Spring
Break, Easter Monday, in the winter with Zoo Lights, and throughout the year with the
birth of new animals. However, several incidents and the overall heightened concern for
visitor safety have prompted the call for improved visitor safety measures.
The 2008 Comprehensive Facilities Master Plan approved by both CFA and NCPC (Figure
2a), identifed opportunities for enhanced visitor experience and operations with the
consolidation of parking lots and streamlined visitor entries. The Master Plan
recommended construction of a new Central Parking Facility (CPF) along with a pedestrian
bridge that would allow expansion of exhibits and improved visitor circulation. After
additional consideration, the Zoo has decided against building the CPF in the foreseeable
future. As a result, the three (3) current primary pedestrian entries - Connecticut Avenue,
the Bus Lot and Lower Zoo – will continue to function as is.
Perimeter Infll Fencing Project 2
Figure 3a - Existing Connecticut Avenue Entrance
Following a number of criminal incidents that occurred in or near the zoo, the Director of the Smithsonian
Offce of Protection Services (OPS) and Smithsonian’s National Zoo Director consulted with several constituent
groups and the local community to consider and develop suggestions to address the violence. After months of
study and numerous security consultant reviews the directors of the Zoo and Smithsonian security concluded
that the best course of action was to implement temporary access controls during specifc periods of high
visitation. After the decision was made to implement temporary access controls, the Smithsonian held
several public meetings to socialize this new procedure for the 2015 Spring Break period. Additionally, the
Smithsonian rolled out a robust communications plan to inform the public.
Visitor Access and Safety:
3 Planning & Design Concept
Development
The Smithsonian has been employing temporary access controls every spring since 2015,
and there have been no further incidents of violent conduct. The impermanent nature of
these measures requires the construction of temporary fencing, along with the erection
of tents and canopies to control visitor fow and provide limited environmental protection
for both security staff and the visiting public. The deployment of the temporary fencing
and canopies (as well as providing for power, lighting, etc.) is a signifcant annual
expense for the Smithsonian. When the decision was made in 2015 to begin temporary
access controls, the Smithsonian also elected to embark on a design process to provide
a permanent infrastructure to support the new process and reduce these signifcant and
recurring annual expenses. This also supported the goals of the NZP Master Plan.
Currently there are thirteen (13) pedestrian access points that allow visitors to enter the
exhibit areas and Olmsted Walk – three (3) primary and ten (10) secondary. During the
design and planning process, it was determined that the three (3) primary access points
should remain, and that the secondary access points should be reduced to three (3)
(Figure 3b). The three vehicular entry points - one from the west at Connecticut Avenue
and two towards the east from Harvard Street and Rock Creek Parkway onto North Road
- will remain unchanged. They will continue to link the fve parking lots and service
points within the Zoo. A private, staff-only area to the south of the public Zoo, known as
Research Hill, will remain accessible through a secure gate and is not being considered
for additional visitor safety measures as part of this submission. The bike trails adjacent
to this area will remain open to the public.
Perimeter Infll Fencing Project 3
Adams M
ill Rd.
Beach DrBeach Dr.
. Adams M
ill Rd.
North Rd.
North Rd.
Connecticut A
ve.
Connecticut A
ve. Haw
thorne St.
Haw
thorne St.
Existing Public Entry Points Proposed Public Pedestrian Entry Points
Lot A Bus Lot Lot B Lot C Lot D Lot E Connecticut
Avenue Entry Bus Lot Entry Lower Zoo Entry
Klingle Rd. Klingle Rd.
Research Research
Hill Hill
N N
Pedestrian Entry - Primary
Pedestrian Entry - Secondary
Vehicular Entry
Pedestrian Entry - Primary
Pedestrian Entry - Secondary
Vehicular Entry
Figure 3b - Entry Point Consolidation
Perimeter Infll Fencing Project 4
Existing Animal
Containment
Fence
Existing
Perimeter
Fence
Area Requiring
Vehicular and
Pedestrian
Controlled Access
Research
Hill
Figure 4 - Existing Fence Conditions (Entire Zoo Property)
Existing Conditions -
4 Animal, Pedestrian &
Vehicular Two eras of perimeter fencing currently exist at the National Zoo: fencing that was
installed before 2012; and, fencing that was installed as part of the Supplemental
Animal Containment Fencing project approved by CFA and NCPC in 2012. The existing
fence conditions diagram (Figure 4a) captures the older perimeter fence that generally
secures the outer Zoo property line and the southwest side of Rock Creek, as well as an
inner ring of secondary animal containment fencing that was installed after 2012. The
non-public area of the Zoo, Research Hill, is also secured when the Zoo is closed. All of
the fencing installed prior to 2012 was either black chain link or wood stockade fencing
for animal yards, whereas the new fencing approved for use after 2012 is a combination
of chain link and 8’ ornamental metal fencing. The ornamental fencing was installed
primarily in the lower zone of the Zoo. The shaded area within the center of the Zoo has
been designated for securely controlled pedestrian and vehicular access for Zoo visitors.
This submission proposes to augment the fencing approved in 2012 with additional
pedestrian and vehicular fencing to enhance security at the Zoo. The existing fencing
conditions diagram (Figure 4b) identifes fence types and the locations of existing gates
for vehicular access and visitor access control.
Perimeter Infll Fencing Project 5
Figure 5a - Existing Lower Zoo Entrance Sliding Gates
5 Proposed Fencing Infill
The diagram on the following page illustrates the locations for security fencing
infll anticipated at the Zoo (Figure 5b). The Connecticut Avenue entrance is
the primary access point to the Zoo and will remain unchanged as part of the
perimeter fencing improvements. The Bus Lot entrance and drop-off will also
remain unchanged with the exception of an additional pedestrian gate and a
vehicle access gate as part of the fencing infl. The Lower Zoo Entrance is the
primary visitor entrance during events and peak days when Lots D and E are in
use. Visitors arriving by foot from the east and the Adams Morgan neighborhood
also use this entrance. This entry currently has the lowest pedestrian volume and
will remain unchanged as part of the additional fencing work.
Perimeter Fencing Requirements
The proposed fencing, which also meets Association of Zoos and Aquariums
standards, will complete the perimeter fence enclosure. Existing wooden stockade
fencing will remain as part of the animal holding and service yards near the Bus
Lot.
There are three primary types of fencing proposed for use as part of this submis-
sion:
1) an eight-foot (8) black, ornamental pedestrian metal fencing manufactured by
Ameristar Fencing, Inc. (AFI),
2) an eight-foot (8) black, ornamental vehicular-rated metal fencing also manufac-
tured by AFI and,
3) a twelve-foot (12), wire-topped, black vinyl-coated chain link fencing.
Perimeter Infll Fencing Project 6
New Vehicle-Rated
New Chain
Link Fence
New Vehicle-Rated
Ornamental Fence
New Chain
Link Fence
Fencing Infill Plan New Ornamental
Fence
New Vehicle-Rated
Ornamental Fence
Ornamental Fence
Existing Ornamental
Fence Replaced with
Vehicle-Rated Fence
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence New Vehicle-Rated
Staff Gate Ornamental Fence
New Pedestrian Gate with Wayfnding Signage
New Vehicular Gate
Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence 0 50 100 200
Figure 5b - Proposed Fence Infll Plan
Perimeter Infll Fencing Project 7
Figure 5c - Existing Stone Piers and Pedestrian Ornamental Fencing at Lower Zoo Entrance
The pedestrian ornamental fencing and gates are used throughout the Zoo and are considered the Zoo
campus standards (Figures 5c, 5e). This type was part of the initial fencing upgrades approved by
both the CFA and NCPC in 2012. The proposed vehicular-rated fence type is new, since it incorporates
increased post sizes along with additional horizontal reinforcing channels and cables to satisfy the ASTM
crash rating for vehicular security (Figure 5f). The inflled fence network will also require single and dou-
ble leaf swing gates (Figures 6a-6b), which are identifed on gate plan (Figure 8).
Criteria for use of the ornamental fences will be wherever the fencing can be closely observed or comes
in contact with Zoo visitors and patrons. The proposed vehicular-rated fence type uses the same picket
style and 4” spacing but is considered a new style, as it incorporates increased post sizes every 32’ and
includes additional horizontal reinforcing channels and cables to meet the required ASTM vehicular
security crash rating (Figure 5f). Overall the two systems should be considered part of the same aes-
thetic family as they share similar features. This is particularly true along large portions of North Road
Figure 5d - Existing Chain Link Fence in Woods
or the lower Zoo Service Drive. Some sections of existing pedestrian fencing will need to be upgraded to
the vehicular-rated type as part of this submission. A comparison of the two fencing types is provided in
side-by-side scaled elevations (Figure 7).
Transitions between the pedestrian and vehicular-rated fence types will be mitigated where feasible with
plant material or with stone piers similar to those at the Connecticut Ave or Lower Zoo entries (Figure
5c). The black, wire-topped chain link fencing (Figure 5d) will only be used within heavily wooded areas
or places hidden from public view.
The proposed fencing has been overlaid with the mapped archaeological sensitive areas identif ed
in the Zoo Master Plan. Excavation work required for the new proposed eight-foot (8)
black ornamental pedestrian fencing is not expected to exceed 40 inches in depth, while the eight-foot
(8) black ornamental vehicular-rated fencing will require 60 inches deep by 36 inches wide footings
Perimeter Infll Fencing Project 8
Figure 5e - Existing Ornamental Sliding Gate at Connecticut Avenue Entry Figure 5f - Proposed Vehicular-Rated Ornamental Fencing (representative sample from another facility)
at approximately 32 feet intervals. It is at these locations that the high strength cables will be secured for ram-
ming protection. Based on past archaeological reports and fndings, the proposed fencing should not affect any
historic or archaeological resources. NZP Horticulture staff have conducted a survey along the proposed fencing
segments and impact on existing trees or vegetation appears negligible. In the event a tree does need to be
removed, NZP will follow their replacement policy of a ‘one for one’ substitution. A majority of the fencing will
be concealed by existing vegetation and, where appropriate, new plantings will be added to further integrate the
fencing with the landscape.
Perimeter Infll Fencing Project 9
Figure 6a - Proposed Double Leaf Swing Gate (representative sample from another facility) Figure 6b - Proposed Single Leaf Swing Gate (representative sample from another facility)
Perimeter Infll Fencing Project 10
8 ft. Pedestrian Ornamental Fencing Elevation
8 ft. Vehicular-Rated Ornamental Fencing Elevation
Figure 7 - Proposed 8 ft. Ornamental Fencing Comparison
Perimeter Infll Fencing Project 11
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence
Staff Gate
1
Segment 3
2 6
7
8
9
4 3 5
New Pedestrian Gate with Wayfnding Signage
Segment 2 New Vehicular Gate
Segment 4 Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence Segment 1 Segment 5
10
GATE SCHEDULE
1 – 20’ Wide Ornamental Double Swing Gate
2 – 12’ Wide Ornamental Double Swing Gate
3 – 20’ Wide Ornamental Double Swing Gate
4 – 12’ Wide Ornamental Double Swing Gate
5 – 20’ Wide Ornamental Sliding Gate
6 – 24’ Wide Ornamental Sliding Gate
7 – 6’ Wide Ornamental Swing Gate
8 – 6’ Wide Ornamental Swing Gate
9 – 12’ Wide Ornamental Double Swing Gate
10 – 26’ Wide Ornamental Double Swing Gate
11 – 6’ Wide Ornamental Swing Gate
12 – 10’ Wide Chain Link Double Swing Gate
13 – 4’ Wide Chain Link Single Swing Gate
14 – 6’ Wide Chain Link Swing Gate
15 – 38’ Wide Ornamental Sliding Gate
16 – 8’ Wide Ornamental Double Swing Gate
17 – 22’ Wide Ornamental Sliding Gate
All gates 8 feet height unless otherwise noted.
11
12
13
14
Segment 6
16 17
Segment 7 -
Replacement of
Existing Fence with
Vehicle-Rated Fence
Segment 8
15
0 50 100 200
Figure 8 - Fencing Gate Plan
Perimeter Infll Fencing Project 12
Front Elevation Viewed When Entering Zoo
Rear Elevation Viewed When Exiting Zoo
Figure 9 - Proposed Directional Signage at New Entry Gates
With the Central Parking Facility project cancellation, the surface parking lots and bus
drop off remain operational for the long term. It is important that the Zoo differentiates
the visitor entry points in these areas from staff-only gates. The proposed wayfnding
signs are located at parking lots A, B, C, and at the Bus Drop Off. The signs are not
proposed for the primary entry gates at Connecticut Avenue and the Lower Zoo. Each
are 12’ wide and 14’ high, with the sign panel matching the new fence and gates in
material and color, while also sharing support posts with the new entry gates (Figure 9).
The raised lettering and Smithsonian sunburst are painted metal and meet Smithsonian’s
graphic standards. Viewed from the parking lots, the sign reads: “Welcome to Smithso-
nian’s National Zoo and Conservation Biology Institute.” The reverse side reads: “Thank
you for supporting our conservation efforts!” The wayfnding signage is not illuminated.
Perimeter Infll Fencing Project 13
Fencing Infill Project 6 Segments
Proposed Location of Chain Link Fence Looking Southwest Across North Road
(fence location shown in red outline for graphical identifcation purposes only)
Visitor Center
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence
Staff Gate
New Pedestrian Gate with Wayfnding Signage
New Vehicular Gate
Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence
Fence Segment Highlight
Photograph View Location
Segment 1 - Connecticut Avenue to Visitor Center
A chain link fence will be placed along the top of the slope and continue to the Visitor Center garage
access. The existing chain link section from the stone gateway pier at North Road to the Olmsted Walk
entrance at Connecticut Avenue will remain (Figure 10).
Figure 10
Visitor Center Garage Access
Olmsted
Walk
North
Roa
d Parking Lot A
Bus Lot
N
r Ce ge A
sitor nter
Visi Cent
Center Access
Perimeter Infll Fencing Project 14
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence
Staff Gate
New Pedestrian Gate with Wayfnding Signage
New Vehicular Gate
Proposed Location of Vehicle-Rated Ornamental Fence Looking Northeast Opposite Lot A
(fence location shown in red outline for graphical identifcation purposes only)
Figure 11
Visitor Center
Olmsted
Walk
North
Roa
d Bus Lot
Visitor Center Garage Access
N
Parking Lot A
1
3
Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence
Fence Segment Highlight
Photograph View Location
North
Roa
d
2
Proposed Location of Vehicle-Rated Ornamental Fence at North End of Bus Lot
(fence location shown in red outline for graphical identifcation purposes only)
Segment 2 - Visitor Center to the Bus Drop-Off
From the Visitor Center, an eight-foot (8) vehicle-rated ornamental metal fencing will follow the existing
internal asphalt walkway to separate Zoo visitors from North Road and Parking Lot A. The frst 20’ wide
double leaf swinging service gates (Gate #1) will provide Zoo staff access to animal exhibit areas. A
single 6’ wide gate (Gate #2) provided at the Lot A crosswalk will allow continued access from this lot,
but also provide OPS the opportunity to screen visitors as needed. A 20’ wide double leaf swing gate
(Gate #3) near the entrance to the Bus Lot will be provided for staff service vehicles. From this point,
an existing ten-foot height wood stockade fence secures the Zoo along the length of the Bus Drop-Off
Area (Figure 11).
Perimeter Infll Fencing Project 15
North Road Parking Lot C
Olmsted Walk Parking Lot B
Panda Plaza and American Prairie
Bus Lot 4
6
5
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence
Staff Gate
New Pedestrian Gate with Wayfnding Signage
New Vehicular Gate
Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence
Fence Segment Highlight
Photograph View Location
Proposed Location of Vehicle-Rated Ornamental Fence Looking Southeast Behind Panda Plaza at the Bus Lot Exit
(fence location shown in red outline for graphical identifcation purposes only)
Proposed Location of Vehicle-Rated Ornamental Fence Looking Southwest Behind Panda Plaza at the Lot B Exit
(fence location shown in red outline for graphical identifcation purposes only)
N
Figure 12
Segment 3 - Bus Lot and Panda Plaza
At the existing entry from the Bus Lot Drop-Off into the Zoo, access will be controlled with the addition
of a 20’ vehicular swinging gate (Gate #5) and a 6’ pedestrian gate (Gate #4). An eight-foot (8) vehicu-
lar-rated ornamental metal fence will extend from the Bus Lot around the service buildings that provide
food service for the Panda Plaza gift shop and American Prairie. A sliding metal gate (Gate #6), match-
ing the vehicle-rated ornamental fencing, will be required to provide access to the service yard from
North Road (Figure 12).
Perimeter Infll Fencing Project 16
FENCE LEGEND
New Chain Link Fence Existing Chain Link Perimeter Fence (installed pre-2012)
New Ornamental Fence Existing Chain Link Fence (approved 2012)
New Vehicle-Rated Ornamental Fence Existing Ornamental Fence
Staff Gate Existing Animal Exhibit Fence
New Pedestrian Gate with Wayfnding Signage Fence Segment Highlight
New Vehicular Gate Photograph View Location
Existing Vehicular Gate
Proposed Location of Ornamental Fence Looking Southwest Next to Lot B
(fence location shown in red outline for graphical identifcation purposes only)
Panda Plaza and
Bus Lot
Proposed Location of Ornamental Fence Looking Southwest at Lot B Entrance
(fence location shown in red outline for graphical identifcation purposes only)
North Road
Parking Lot B
Parking Lot C
Elephant House
Olmsted Walk Parking Lot B
American Prairie
7
8
9
10
N
Figure 13
Segment 4 - Parking Lot B
An eight-foot (8) ornamental metal fence will extend along the boundary between Olmsted Walk and
Parking Lot B. This fencing will serve as the long-term, permanent containment and security edge for
the Zoo. Two gates (Gates #7-8) will provide access for Zoo staff, while an additional gate (Gate #10)
will remain for Zoo service vehicles. The public access point for Lot B will occur at Gate #9 (Figure 13).
Perimeter Infll Fencing Project 17
Proposed Location of Pedestrian Entry Looking Southwest Opposite Lot C Entrance
(fence location hidden from view by vegetation)
Segment 5 - Animal Exhibits to Lot C
From the Lot B entrance, the eight-foot (8) ornamental vehicle-rated metal fence will continue along
North Road until it meets the existing Zoo animal services buildings, which form the back of house
operations for Small Mammals. From here, the perimeter containment fencing will change from the or-
namental type to chain-link, as this is a heavily vegetated area and hidden from view along North Road.
The chain-link will continue within the woods atop the steep embankment until it runs down the slope
and ties into the existing chain-link fencing adjacent to the Power Plant (Figure 14).
A 6’ pedestrian gate (Gate #11) will be installed in the fence where it crosses the existing walkway
leading down to Lot C. The gate in this location will be secured with a magnetic card reader for Zoo staff
and provide access for visitors arriving from Lot C.
N
Figure 14
North Road
Small Mammals
Parking Lot C
Steam Boiler Plant
11
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence
Staff Gate
New Pedestrian Gate with Wayfnding Signage
New Vehicular Gate
Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence
Fence Segment Highlight
Photograph View Location
Perimeter Infll Fencing Project 18
FENCE LEGEND
New Chain Link Fence Existing Chain Link Perimeter Fence (installed pre-2012)
New Ornamental Fence Existing Chain Link Fence (approved 2012)
New Vehicle-Rated Ornamental Fence Existing Ornamental Fence
Staff Gate Existing Animal Exhibit Fence
New Pedestrian Gate with Wayfnding Signage Fence Segment Highlight
New Vehicular Gate Photograph View Location
Existing Vehicular Gate
Figure 15 Proposed Location of Chain Link Fence Looking Southwest Next to the Power Plant
North Road
Small Mammals
Parking Lot C
Steam Boiler Plant
14
13
N
12
(fence location shown in red outline for graphical identifcation purposes only) Segment 6 - Power Plant
Supplemental chain link fencing will be used to secure the Power Plant area. Chain link fencing will fol-
low along or be integrated into the existing food control walls and gates that surround the Power Plant.
The staff parking area will be left as is. Existing chain link fencing is located within the woodland area
behind the Power Plant and ties into the existing eight-foot (8) ornamental metal fence that extends to
the Lower Zoo entry point, thus securing and isolating the Steam Boiler Plant from the main Zoo (Figure
15). The existing gates (Gate #s 12-14) will remain and be incorporated in the proposed fence modif-
cations.
Perimeter Infll Fencing Project 19
N
Figure 16
Great Cats
Harvard Street Bridge
Nort
h R
oad
Rock C
reek
Rock C
reek
Beach Drive Entry Olmsted Walk Proposed Location of Existing Ornamental Fence to be Replaced with Vehicle-Rated Fencing
(fence location shown in red outline for graphical identifcation purposes only)
Segment 7 - Existing Ornamental Fence Opposite Harvard Street Bridge
The existing ornamental metal fence will be replaced with vehicle-rated ornamental fencing between the
Lower Zoo entry plaza and the intersection of North Road and Harvard Street. The new fencing will be the
same height and general confguration as the existing fencing to remain (Figure 16).
FENCE LEGEND
New Chain Link Fence
New Ornamental Fence
New Vehicle-Rated Ornamental Fence
Staff Gate
New Pedestrian Gate with Wayfnding Signage
New Vehicular Gate
Existing Vehicular Gate
Existing Chain Link Perimeter Fence (installed pre-2012)
Existing Chain Link Fence (approved 2012)
Existing Ornamental Fence
Existing Animal Exhibit Fence
Fence Segment Highlight
Photograph View Location
Perimeter Infll Fencing Project 20
FENCE LEGEND
New Chain Link Fence Existing Chain Link Perimeter Fence (installed pre-2012)
New Ornamental Fence Existing Chain Link Fence (approved 2012)
New Vehicle-Rated Ornamental Fence Existing Ornamental Fence
Staff Gate Existing Animal Exhibit Fence
New Pedestrian Gate with Fence Segment Highlight Wayfnding Signage
New Vehicular Gate Photograph View Location
Existing Vehicular Gate
Proposed Location of Vehicle-Rated Ornamental Fence Looking Southeast Across North Road toward Amazonia
(fence location shown in red outline for graphical identifcation purposes only)
N
Figure 17
Service Drive
Mane Service
Yard
Amazonia
Rock Creek
Research Hill
Service Drive
15
16
17
Segment 8 - Mane Service Yard To Amazonia
The existing eight-foot (8) ornamental metal fence that secures the Zoo along the lower Service Drive to
the Mane Service Yard vehicular gate from the Lower Zoo entry will remain as is. However, the fencing
will need to be extended and a new gate (Gate #15) provided to maintain an internal pedestrian path
while still controlling vehicular access. The existing black ornamental metal sliding gate will remain
with a longer similar sliding gate added on the exterior. The parallel gates will restrict visitor access to
the Mane Service Yard area as pedestrians move between Amazonia and the Kids Farm area, while still
maintaining controlled vehicular access to this area.
From the new sliding gate the eight-foot (8) ornamental metal fencing will continue along the existing
walkway to the bridge over Rock Creek. A swinging metal gate (Gate #16) and a new ornamental sliding
gate (Gate #17) will be placed for staff pedestrian and vehicular access to Amazonia and the valley por-
tions of the Zoo from Research Hill (Figure 17). Visitor access from this point will no longer be possible.
Perimeter Infll Fencing Project 21