by Alex Gugel , all rights reserved
Fort PointAbbreviated Fort Point Historic Structure Report |
Abbreviated Fort Point Historic Structure Report for Fort Point National Historic Site (NHS) in California. Published by the National Park Service (NPS).
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National Park Service
U.S. Department of the Interior
Fort Point National Historic Site
Golden Gate National Recreation Area
Abbreviated Fort Point Historic Structure Report
Abbreviated Fort Point Historic Structure Report
Fort Point National Historic Site
Golden Gate National Recreation Area
Fort Mason, Building 201
San Francisco, California
Produced by the Cultural Resources & Museum Management Division
Golden Gate National Recreation Area
National Park Service
U.S. Department of the Interior
Washington, DC
September 2006
Front cover photo:
A view of Fort Point, circa 1869. Credit: Fort Point NHS
Collection, Golden Gate National Recreation Area.
inside front page photo:
View of Fort Point, circa 1869. Credit: National Archives,
Record Group 77
Back cover photo:
This photo, dated 1910, shows the Fort Point lighthouse
keeper’s residences located at the south of the fort.
Credit: Fort Point NHS Collection, Golden Gate National
Recreation Area.
Contents
Introduction ............................................................................................... 8
Developmental History ........................................................................... 14
Fort Point: Sentry at Golden Gate ............................................. 14
Chronology of Fort Point Development & Use ......................... 28
1776-1852: Castillo de San Joaquin ................................... 28
1853-1860: Initial Construction ........................................ 30
1861-1868: The Civil War & the First Garrison.................... 35
1868-1906: Dire Straights ................................................. 37
1907-1930: Detention Barracks WWI, Army Use ............... 45
1931-1940: Golden Gate Bridge Construction .................. 49
1941-1945: World War II ................................................... 54
1946-1970: The Move Toward Preservation: Establishment
of the Fort Point Museum Association .............................. 55
1970-1998: National Park Service Stewardship................... 57
Physical Description .................................................................... 74
Conditions Assessment and Material Investigations .............. 100
Treatment & Work Recommendations ................................................. 122
Evaluation of Restoration Work to Date ................................ 122
Secretary of the Interior’s Standards ........................................124
Requirement for Treatments & Use (Outline) ..........................125
Treatment Recommendations (Outline) ...................................125
Bibliography ........................................................................................... 126
Glossary .................................................................................................. 130
Appendices A: Floor Plans..................................................................... 133
Appendices B: List of Fort Point Documents ........................................151
Appendices C: Supplemental Record of Work Performed ................. 152
Left: Photo of Fort Point during
winter of 2000. Photo circa 2000.
Credit: Su Chu-Way, Golden Gate
National Recreation Area.
7 Fort Point Historic Structures Report
Introduction
Fort Point became part of the National Park Service
in 1970 and has been administered by Golden Gate
National Recreation Area since that park was created in 1972. Since then, the National Park Service
has conducted significant research on the Fort in
order make the best building rehabilitation decisions. This Abbreviated Fort Point Historic Structure
Report is a synthesis of most of the research conducted to-date and makes references to other related
reports and studies. The appendices also contain
floor plans and a list of Fort Point documents.
However, this Abbreviated Fort Point Historic
Structure Report does not contain a completed
Treatment Recommendations section that is one
of the critical components of a standard historic
structure report; hence the title “Abbreviated”
Fort Point Historic Structure Report. The historic
preservation consultants Carey & Co. wrote an
outline for this section which provides guidance
for future work. It is the National Park Service’s
hope that the treatment recommendations work
will be conducted by a historical architect in the
near future.
Preparation
At Carey & Co. (460 Bush Street, San Francisco,
CA 415-773-0773), individuals included Alice
Carey, Principal; Nancy Goldenberg, Project
Manager; and Heidi Stosick.
American War, and World War II. The fort is now
recognized as one of the best-preserved “Third
System” forts in the United States.
Originally built to protect the entrance to San
Francisco Bay during the Gold Rush, Fort Point
was garrisoned throughout the Civil War in anticipation of enemy attack either by Confederate
naval forces or by Confederate insurgents living
in California. In 1863, the U.S. Lighthouse Board
erected a hexagonal iron lighthouse on the fort’s
roof (“barbette”) to mark the southern boundary
of the harbor entrance. San Francisco was never
attacked, and Fort Point never saw battle, and
three years after the war ended the army withdrew
the garrison and began removing the obsolete
cannon.
The fort entered a period of underutilization for
several decades, during which it was used sporadically as barracks, classroom site, warehouse
and automotive workshop. Newer gun batteries
constructed of earth and concrete were erected
on the hillsides overlooking the fort, and in 1882
the Army formally named the masonry fort and
its exterior batteries “Fort Winfield Scott.” In the
1930s, the fort was initially scheduled for demolition to make way for the Golden Gate Bridge, but
instead was saved by the bridge’s chief engineer
who recognized its unique historic and architectural values.
At Architectural Resources Group (Pier 9, The
Embarcadero, San Francisco, CA 415-421-1680), During construction of the Golden Gate Bridge,
individuals included Davis Wessel, Principal; “old Fort Point” as it had come to be known held
Glenn David Mathews, Project Architect; Ricarda office spaces, workshops, a cafeteria, and other conCepeda, Project Manager & Historic Preserva- struction-related activities. Following the outbreak
tion Specialist; and Christina Wallace, Technical of World War II, the fort once again became a key
Editing.
element in the Harbor Defenses of San Francisco
when
the Coast Artillery erected a battery of rapidAt the Golden Gate National Recreation Area,
National Park Service (Bldg 201, Fort Mason, San fire guns on the barbette tier as protection against
Francisco, CA 415-561-4700), individuals included Japanese attack. In 1959, a group of retired military
Jane Lehman, Historical Architect; Kristin Baron, officers and civilian engineers formed the Fort Point
Architectural Historian; Paul Scolari, Historian; Museum Association to lobby for its preservation as
Theresa Griggs, Fort Point Supervisor; Maureen a Historic Site. That effort culminated on October
Rogers, Park Ranger; Susan Ewing Haley, Park 16, 1970 with the creation of Fort Point National
Archivist; Mary Gentry, Archivist Technician, Historic Site.
George Su, Media Specialist; and John Martini, The building’s official name and number is Fort
Curator of Military History.
Point National Historic Site, Presidio of San Francisco Building #999.
Executive Summary
Fort Point in the Presidio of San Francisco is a Relevant Documents
National Register property that contributes to The following is a list of research conducted on Fort
the Presidio of San Francisco National Historic Point. All of the following documents are included in
Landmark. The fort and the surrounding 29 acres the Abbreviated Fort Point Historic Structure Report
today comprise Fort Point National Historic Site, except for the 1973 Historic Data Section.
a unit of the National Park Service.
1973: Historic Data Section, Fort Point
Left: Contemporary view of Fort
Point interior. Photo circa 2000.
Credit: Golden Gate National Parks
Conservancy.
Fort Point is a classic brick and granite 19th-century American coastal fort, and the only one of
its style constructed west of the Mississippi River.
The fort and its exterior batteries were key elements of the harbor defenses of San Francisco
during the American Civil War, the Spanish
Historic Structure Report; National Park
Service
In 1973, the National Park Service wrote
the Historic Data Section for the Fort
Point HSR. This report, written by Edwin
C. Bearss, focused mainly on the initial
construction for the Fort. The report does
not contain an Architectural Data Section,
National Park Service 8
which would have graphically outlined
the developmental history of the fort, or
analyzed existing conditions, and made any
recommendations for treatment. While this
document is valuable, it is focused largely
on the minute details of the construction
process and represents only a small part of
what comprises of a whole HSR. The Bearss
document is referenced but not included in
the Abbreviated Fort Point Historic Structure
Report. Currently, the 1973 Historic Data
Section is not in public circulation, but the
hope is that the document will be available on
the Golden Gate National Recreation Area’s
website in the near future.
1991: Fort Point; Sentry at the Golden
Gate; John Martini
In 1991, John Martini wrote Fort Point;
Sentry at the Golden Gate for the Golden
Gate National Park Association. This
booklet was designed to introduce visitors
to Fort Point and provides useful historical
background. The document has been
adapted for the Abbreviated Fort Point
Historic Structure Report and used as the
narrative part of the Developmental History.
1997: Outline Historic Structures Report;
Carey & Co.
In October of 1997, the National Park
Service contracted with Carey & Co. to
create an Outline Historic Structure Report
to update the existing 1973 Fort Point
HSR. The goal of this Outline Historic
Structure Report was to serve as a design for
completing a full Historic Structure Report.
Their document featured an in-depth
“Chronology of Development and Use”, as
well as an assessment of restoration work
to-date and an examination of the Fort for
physical evidences of change.
The “Chronology of Development and Use”
listed projects by date in chronological
order. For ease of use, Carey & Co. organized
the material into chapters by historical
period. These periods are for the most part
defined by major events or changes in use
or management that resulted in physical
alterations to the fort.
• 1776-1852: Castillo de San Joaquin
• 1853-1861: Initial Construction
• 1862-1868: The Civil War and the First Garrison
• 1868-1906: Dire Straights
• 1907-1930: Detention Barracks, WWI, Army
Use
• 1931-1940: Golden Gate Bridge Construction
• 1941-1945: WWII
• 1946-1970: The Move Toward Preservation:
Establishment of the Fort Point Museum
Association
• 1971-1998: National Park Service Stewardship
9 Fort Point Historic Structures Report
The “Chronology of Development and Use”,
focusing on the construction history of the
fort, chronicles the history of Fort Point from
the first Spanish fort through the present. Measured drawings and a glossary were also prepared as part of this contract.
Carey & Co. updated the 1973 HSR with
post-1973 building projects. They also
added relevant material from local archives
that were probably not available when
the earlier document was prepared and
placed everything into a clear, easy-to-use
format. Carey & Co. conducted research
at several local repositories containing
primary research materials. Their research is
referenced in the annotated bibliography at
the end of this document.
Research was conducted at the following
archives:
• The Park Archives and Records Center of
Golden Gate National Recreation Area.
• The Pacific Sierra Branch of the National
Archives Administration (San Bruno).
• The San Francisco History Room of the San
Francisco Public Library.
• The Fort Point National Historic Site
Administrative Office.
• The J. Porter Shaw Library of the San Francisco Maritime National Historical Park.
• The California Historical Society.
Carey & Co. also interviewed the following
individuals who had long-term familiarity
with the Fort: John Martini, former Curator
of Military History, Golden Gate; Maureen
Rogers, Park Ranger, Golden Gate; Ric Borjes,
former Historical Architect and Chief, Branch
of Cultural Resources, Golden Gate; Charles
Schultheis, former Maintenance Buildings and
Utilities, Golden Gate; Rich Weideman, former South District Chief Interpretive Ranger,
Golden Gate.
January 2005: Conditions Assessment and
Materials Investigation; Architectural
Resources Group (ARG)
The purpose of the Architectural Resources
Group investigation was to evaluate the
nature, cause and extent of water intrusion
and general material deterioration in areas
excluded from recent rehabilitation projects.
The recommendations included in their
report are guidelines for the repair of the
most critically deteriorated materials and
areas; they are not construction documents.
These are recommendations that may be
incorporated into preventative maintenance
and general housekeeping plans for Fort
Point.
Statement of Significance
engineers constructed more than thirty brick and
Fort Point has stood guard at the narrows of the masonry forts in the Third System style between
Golden Gate for nearly 150 years. It has been 1820 and 1870, but of this number only Fort Point
called “the pride of the Pacific,” “the Gibraltar was built in the West. More importantly, the fort
of the West Coast,” and “one of the most perfect represents the culmination of the Third System
models of masonry in America.” When construc- designs and incorporates design features pertion began during the height of the California fected over the preceding decades. Because Fort
gold rush, Fort Point was planned as the most Point never saw battle, and because it was never
formidable deterrence America could offer to extensively rebuilt like so many other forts, it
a naval attack on California. Although its guns remains virtually unchanged from its Civil War
never fired a shot in anger, the “Fort at Fort Point” appearance. Also, due to the mild San Francisco
as it was originally named has witnessed Civil climate, the fort has been spared the destructive
War, obsolescence, earthquake, bridge construc- forces of hurricanes and “freeze-thaw” cycles
tion, reuse for World War II, and preservation as that have reduced many other forts to near ruins.
a National Historic Site.
Historians recognize Fort Point as one of the bestFort Point was built between 1853 and 1861 by the preserved Third System forts in the country.
U.S. Army Engineers as part of a defense system of
forts planned for the protection of San Francisco
Bay. Designed at the height of the gold rush, the
fort and its companion fortifications would protect the Bay’s important commercial and military
installations against foreign attack. The fort was
built in the Army’s traditional “Third System”
style of military architecture (a standard adopted
in the 1820s), and would be the only fortification
of this impressive design constructed west of the
Mississippi River. This fact bears testimony to the
importance the military gave San Francisco and
the gold fields during the 1850s.
Although the fort never saw battle, it has tremendous significance due to its military history, its
architecture, and its association with maritime
history.
Fort Point has significance under National Register Criteria A and C for its association with the
Civil War and World War II; construction of the
Golden Gate Bridge; maritime history; and its
important architectural features.
The fort meets Criterion A, “the broad patterns
of our history,” for its role in military history as
a defensive fortification that was continually
manned during the American Civil War. Its hasty
completion on the eve of the war and its armed
presence throughout the Civil War reflect the
importance given by the government to protecting San Francisco and its important harbor. The
fort has further military significance due to its
important associations with World War II when
the army gave the old structure a renewed defensive role as the site of anti-torpedo boat defenses
mounted on the fort’s roof to against possible
Japanese attack. The fort also has significance
under this criterion due to its association with
the construction of the Golden Gate Bridge in the
1930s, an undertaking of overwhelming engineering and sociological importance during the Great
Depression. Finally, the fort’s lighthouse gives it
association with the patterns of maritime history in the United States for its role guiding ships
through the hazardous Golden Gate straits.
Fort Point meets Criterion C, “distinctive characteristics of a type, period, or method of construction” because of its architectural style and
construction techniques. The United States Army
Civil War Period, 1861-1868
Fort Point was originally designed to serve as
one of a trio of forts located on San Francisco
Bay under a plan devised by the U.S. Army Engineers in 1850 at the height of the California Gold
Rush. (The other two forts were to be located
on Alcatraz Island and Lime Point. Alcatraz was
eventually fortified, albeit in a radically different
style from Fort Point, but the Lime Point fort was
never built.) Work began on Fort Point in 1853 and
continued through the outbreak of Civil War in
early 1861. Planned to mount 141 cannon in its
interior and exterior batteries, Fort Point was the
ultimate expression of an American “Third System” fortification, so-named because it was part
of the third system of permanent fortifications
constructed by the young United States.
The original threat for which the fort was built
was a possible attack by Great Britain, which
maintained a large naval base in British Columbia.
However, when war came to California the threat
would come from within our nation, not from
a foreign power, and Fort Point was rushed to
completion at the start of the American Civil War.
Troops were actually ordered into the fort before
its cannon were even mounted to make sure that
local Confederate supporters did not seize the
empty fort. When the soldiers did begin installing
the guns shortly afterwards, they positioned many
weapons to face south to defend against possible
land attack rather against a naval assault.
Throughout the war, Union artillerymen garrisoned the fort and readied its dozens of
smoothbore cannon in anticipation of enemy
attack—either by Confederate warships or by
Confederate insurgents living in California. At
its height of readiness in 1865, Fort Point mounted
55 cannon ranging in size from 24-lb. howitzers
up through 10-inch caliber Columbian cannon.
More than 500 enlisted men, officers, and civilians
lived within the fort’s casemated living quarter
rooms or in nearby wooden barracks.
Beginning in 1855, a temporary wooden lighthouse had been built on the seawall adjacent to the
fort to mark the southern boundary of the harbor
entrance. In 1864, a hexagonal iron lighthouse was
erected on the fort’s roof (“barbette”) that stood
clear of the fort’s cannon. The tower’s FresnelNational Park Service 10
pattern lens was eventually augmented by a fog
bell hung from the fort’s exterior wall. Manned by
civilian keepers who lived on the hillside south of
the fort, the Fort Point Light Station would lead
countless ships through the Golden Gate straits
for the next 70 years.
southern anchorage. The second tier gun rooms
served as a cafeteria for bridge workers, and the
fort was soon enveloped in a maze of wooden
scaffolding as the huge steel arch was erected
over the barbette tier.
Although the main casemated portion of Fort
The fort’s career as an active harbor defense post Point was spared during construction, some of
lasted only seven years. Battles waged during the outworks of the fort had to be demolished
the Civil War demonstrated the vulnerability of to make way for the southern bridge anchorage,
masonry forts such as Fort Point to long-range including a small counterscarp gallery that had
artillery attack. Instead of providing robust protected the fort’s southern face and a sepadefense against enemy bombardment, their thick rate ten-gun battery located on the hill south of
masonry walls had actually proven to offer scant the fort. The Fort Point Lighthouse was also to
resistance to modern rifled artillery fire. (Fort become a victim of the bridge. By late 1934 the
Pulaski in Georgia fell to rifled artillery fire in bridge’s rising steelwork and concrete caissons
30 hours.) Military planners feared that in this had obscured the light’s beam. It was replaced
new era of warfare, Fort Point’s towering walls that year with new light at the base of the bridge’s
would only provide attractive targets to an attack- south tower.
ing enemy. Following the war, Fort Point entered The Golden Gate Bridge’s grand dedication took
a period of decline until its troops were totally place in May of 1937. For the next few years the
withdrawn in 1868. Next came a decades-long fort was nearly forgotten, overshadowed by the
period of intermittent abandonment and reuse soaring new steel bridge overhead.
that lasted until the 1930s. During this period
World War II, 1942-1945
the fort sporadically served as a barracks, artilThe outbreak of World War II brought a massive
lery training site, temporary quarters for military
increase in military activity around the Bay. Ironifamilies, a school for motor vehicles mechanics,
cally, in the aftermath of Pearl Harbor, old Fort
and even a never-completed military prison.
Point would once again become a key element in
Golden Gate Bridge Construction, 1933-1937
the Harbor Defenses of San Francisco.
In the 1920s, plans were developed to construct
In response to the fear that Japanese submarines
a breath-taking new bridge that would span the
might try to enter the harbor, the Navy strung a
straits of the Golden Gate. Designed to connect
steel net across the Golden Gate in early 1942.
the City of San Francisco with the sparsely-popuDefense of this net became the responsibility of
lated rural counties to the north, voters hoped its
the U.S. Army. To help both protect this net and
presence would spur commercial development
to guard against a possible attack by swift motornorth of the Gate. The new bridge would be an
torpedo boats, the Army removed four 3-inch
engineering achievement in many ways, but most
caliber Anti-Motor Torpedo Boat (AMTB) guns
impressively, it would be the longest single-span
from Fort Baker in Marin County and remounted
suspension bridge in the world when completed.
them on the barbette tier of Fort Point. Named
When work actually began in 1933, at the depths
“Battery Point” in honor of the fort, two of the
of the Great Depression, the bridge’s construcguns were positioned facing west to protect the
tion would also represent a leap of faith in the
mine fields outside the Golden Gate while the
economic future of America.
other two guns faced into the Bay to defend the
But there was a problem with the planned Golden anti-submarine net.
Gate Bridge: Fort Point stood precisely where the
In addition to the AMTB guns, the fort’s barsouthern anchorage of the new bridge was to be conbette also mounted a 60-inch searchlight used for
structed. The fort, it seemed, would have to go.
illuminating targets at night, and a pair of range
Before construction began, though, Chief Engi- finding stations used in aiming the big coastal
neer Joseph Strauss toured the empty fort and guns mounted at the Presidio.
changed his mind – and also his design. In a 1937
The AMTB guns were manned by about 100 solmemorandum to the bridge’s Board of Directors,
diers from Battery N of the 6th U.S. Coast ArtilStrauss wrote: “While the old fort has no military
lery Regiment, who took up residence in the
value now, it remains nevertheless a fine exambarracks rooms originally built for Civil War-era
ple of the mason’s art. Many urged the razing of
troops. Stationed several thousand miles from the
this venerable structure to make way for modern
major theaters of combat, the men spent their days
progress. In the writer’s view it should be prein a routine of drills, artillery practice, inspecserved and restored as a national monument…”
tions, sentry duty, and maintenance chores. The
Consequently, Strauss designed a steel arch in
lower levels of the fort were soon refurbished
the southern anchorage to span the old fort. Fort
for a variety of war-time uses: barracks spaces,
Point would be overshadowed by the new bridge,
administrative offices, a mess hall, recreation
but it would be preserved.
room, barber shop and even a post exchange for
Work on the Golden Gate Bridge lasted from 1933 the new garrison. The first-floor rooms provided
to 1937. Fort Point’s casemates made convenient storage space for camouflage materials used by
work space for the hundreds of workers and Harbor Defense troops in disguising nearby gun
artisans who soon swarmed around the bridge’s emplacements.
11 Fort Point Historic Structures Report
By late 1944, however, the threat of Japanese attack
had disappeared and the Fort Point troops were
removed. Once again, the future of the fort was
uncertain.
Preservation of the Fort
Following World War II, a movement took hold
to protect and preserve Fort Point. This movement crystallized in 1959 when a group of retired
military officers and civilian engineers banded
together to form the Fort Point Museum Association. Operating with the blessing of the U.S. Army,
the Association spent the next eleven years raising
funds for the preservation of the fort and lobbying
for its creation as a National Historic Site.
In 1968, local congressmen introduced bills
calling for the creation of Fort Point National
Historic Site. Both bills passed the House and
Senate. On October 16, 1970, the bill in its final
form was signed into law by President Richard
Nixon. Today, Fort Point National Historic Site is
open to the public and administered by Golden Gate
National Recreation Area, National Park Service.
Fort Point stands today beneath the soaring
Golden Gate Bridge as a monument to more than
two centuries of military presence on San Francisco Bay. The fort also bears silent and eloquent
testimony to the craftsmanship of the U.S. Army
engineers who designed it and the stonemasons,
carpenters, brick layers, mule skinners, and laborers who erected it.
National Park Service 12
13 Fort Point Historic Structures Report
Above: Contemporary view of Fort
Point, circa 2000. Credit: Golden
Gate National Parks Conservancy.
Left: Contemporary view of Fort
Point interior. Photo circa 2000.
Credit: Golden Gate National Parks
Conservancy.
Developmental History
Fort Point: Sentry at Golden Gate
by John Martini
Early History: 1776–1846
The site of Fort Point was originally a high prom- the San Francisco shore. They called themselves
ontory known to 18th-century Spanish colonizers “Bear Flaggers” after their flag of revolution, and
as “Punta del Cantil Blanco”- White Cliff Point. their goal was the liberation of California from
Located at the narrowest part of the only entrance Mexican control.
to San Francisco Bay, the point was an obvious Nosing their launch into a sheltered cove below
location for a fort to keep out enemy ships. In 1794 the fort, the raiders scrambled up the hundredthe Spanish erected a tiny adobe gun battery atop foot hillside, swarmed into the crumbling Castillo
Cantil Blanco as defense against possible British and spiked the cannon mounted within its walls.
and Russian aggression. Christened “Castillo de The only tarnish on the victory was that the CasSan Joaquin,” the little fort and its handful of tillo had not been garrisoned for a dozen years.
century-old bronze and iron guns soon fell victim “In the absence of a garrison with no powder,”
to the harsh San Francisco climate. Adobe walls wrote one caustic historian, “it is not surprising
melted in the rain, and lack of repair funds from that not one of the ten cannon offered the slightfar-off Madrid led to eventual ruin of the Castillo. est resistance.”
Shortly after Mexico gained its independence
United States military forces were shortly in confrom Spain in 1821, the fort was abandoned to
trol of California. The growing American poputhe elements.
lation gave local landmarks new names, and the
The only invasion in San Francisco’s history old Castillo soon became known as “Fort Blanco.”
occurred at the Castillo in 1846 during the short- The point upon which it sat was simply nicknamed
lived “Bear Flag Revolt.” Early in the morning “Fort Point.” It was a name that would stick.
of July 1, a rough-hewn group of Yankees, led
by John Charles Fremont and Kit Carson began
the long pull across the Bay from Sausalito to the
ancient Spanish fort “Castillo de San Joaquin” on
National Park Service 14
This view show the fort’s lighthouse
and the lighthouse keepers
residences located at the top of
the hill, south of the fort. Photo
circa 1910. Credit: Fort Point NHS
Collection, Golden Gate National
Recreation Area.
A Fort to Guard the Golden Gate: 1848 - 1868
The California Gold Rush of 1848 took the United
States by surprise. Not only was the wealth of the
gold fields nearly incalculable, but ship traffic into
San Francisco increased dramatically. Only a few
ships a year had previously visited the port, but
during 1849 alone, 770 vessels entered the Golden
Gate. Commerce was booming, and docks, a Navy
yard and other strategic harbor installations were
under construction. The military suddenly found
itself responsible for protecting the most valuable
prize in North America: San Francisco Bay.
backed up by smaller batteries on Angel Island,
Yerba Buena Island, and Point San Jose on the
northern San Francisco waterfront. Any ship
making it through the crossfire at the Golden
Gate would thus have to run a gauntlet of additional gun batteries no matter which course it
chose through the Bay.
Board members were very insistent that work
begin immediately at Fort Point, where “the
first work for the defense of the passage should
be placed, and nothing should be allowed to
interfere with bringing this battery as rapidly as
possible to a state of efficiency.” They specified
the fort should be “as powerful in its fire on the
water as...the largest of our fortifications on the
Atlantic,” and recommended mounting over 100
cannon of the largest caliber available.
While the U.S. Army quickly realized that permanent defenses were needed, it would take time
to plan and build major fortifications, or “works;’
to protect the Bay. The harbor needed immediate security, so in March 1849, six modern artillery pieces were temporarily mounted inside the
remains of the old Castillo de San Joaquin. The The style of fort proposed by the engineers was a
following year, a joint Army-Navy board con- massive, multi-storied masonry structure containvened to make recommendations for defending ing scores of smoothbore cannon. The guns would
the entire Pacific coast. Their report, released be mounted both in enclosed “casemates” and
on November 1, 1850, focused on San Francisco in open “barbette” batteries atop the fort’s roof.
Bay and the Golden Gate channels as the keys to Within its five to seven foot thick walls would
defense of the new state. The board recommended also be quarters for the officers and soldiers, store
the construction of two major forts, one on either rooms, powder magazines, and enough water and
shore of the Golden Gate’s straits formed by Fort provisions to withstand a six-month siege.
Point and Lime Point. The proposed forts would
provide a devastating crossfire where the channel Before work could begin on construction of
measured little more than a mile wide, focusing the fort, the remains of the old Castillo and the
the effect of several hundred cannon upon any heights of