The San Francisco call., 1913-08-16
ENGINEER SOLVES
MARKET EXTENSION
Official Report on Tunnel.
Cost to Property Owners
Is Satisfactory

The report of City Engineer
O'Shaughnessy on the $4,000,000 Twin
Peaks tunnel project. S5 per cent of
which will be paid for by the property
on the southwesterly side, is regarded
as a tangible and satisfactory solution
OF the extension of Market street from
its present terminus at seventeenth
and Castro to Eighteenth and Hattie
streets.
The extending of Market street on
suitable grade and at cost within the
pecuniary reach of that section of the
city which will be benefited mostly has
been a perplexing problem.
1t is now pointed out that under the
Twin Peaks tunnel proceedings the ex-
tension of this main artery, which has
long been obviously needed for the
growth and development of the large
area OF valuable and desirable prop
erty scouting the Twin Peaks HILL Will
be given to the property owners on the
city side of the peaks, practically with
out cost to them.
In connection with the extension OF
Market street as provided In the Twin
Peaks tunnel plans. the Twin Peaks
Association of Improvement CLUBS mas
a proposition we'll under way and one
that is receiving support from Inter
ested property owners, to take up the
Market street extension from the
southeaster1y portal OF the subway at
Eighteenth and Hattie streets, and by
contour route and over easy grades
extend it to an intersection with Corr
bett avenue, this giving the district an
outlet to the beach or Golden gate.
The extension of Market street from
Castro to Hattie streets has always
been a sticker. because 1T must run
through about 1900 feet of improved
property.
The report of the city engineer deals
- ~. Il q =
garded as practical He proposes that
under the Twin Peaks tunnel proceed
ings a right of way can be secured for
about 100000, thus acquiring surface
as well as subsurface easements.
BY thus acquiring the land, which
will be by far the largest part or the
damages in connection with the con-
struction of the tunnel, a 80 foot boule-
ward can be built over the subway.
: 1t is coincident that in May, 1872,
John M. Punnett in report made to
the Twin Peaks Association of Im-
provement Clubs proposed the same
way of extending Market street from
it's present terminus to the beginning
of the proposed subway as does the.
city engineer in his report on the Twin
Peaks project which is now in the
hands OF the supervisors for approval.
Regarding the extension, Punnett
said
From Market street to Eureka
street the grade is 3.5 per cent, and
from there to the connection with
Eighteenth street the grade Is GA per
cent. From Eighteenth street 1T fol-
lows the contour of the ground cross
ing Grand avenue and joins the Fal-'
con avenue on a grade of rs per cent.
From this point south to Corbett ave-
nue. easy grades are to be met. / have
figured the width of the boulevard at
S5 feet.
After leaving Eighteenth street
and running over the side hill country
would advocate terracing and placing
the car lines below the driveways.
This would give an artistic effect.
would cost less to construct and would
provide rapid transportation without
danger to vehicles.
."The value of such a highway or
boulevard Is inestimable. 1t would
give q through connection from Mar
ket street to the beach or Golden Gate
park on easy grades.
For the benefit of the people living
in the entire region covered by my in
vestigation, can not too strongly urge
that il Market street Is extended 1t
should be as an easy grade highway
-as b main artery, running from its
present terminus through to the beach
or Golden Gate park, and affording an
outlet to the entire district"