Pittsburg dispatch. [volume] (Pittsburg [Pa.]) 1880-1923, 1889-04-16
PROPOSALS
FOR
BRIDGE SUPERSTRUCTURE
AND
OFFICE OF COUNTY CONTROLLER,
Pr,crgRuRa pa AnriI lR l88l

MASONR1.
OFFICE OF COUNTY CONTROLLER, 4
PrrTsBURG. PA, April l6. 1885,
Sealed proposals will be received until
o'clock P. NJ. Wednesday, April "a. 1889, at the
office of the County Controller, for the super
structure and masonry of one wrought iron
pin-connected truss and six plate-girder high.
way bridges, and for construction of one stone
arch bridge, located as follows:
No. i. Over Miller's run, at Collins Mill
Low truss bridge, IS feet center to center OF
end pins, 2 trusses each feet high and divided
into panels; to have vertical end posts. Live
load, ], 200 pounds per lineal foot; static load,
$40 pounds per Hneal foot.
bridge.)
Plate-girder bridge, 50 feet clear span, Al feet
extreme length Depth of girder, As inches.
Live load, LOO pounds per lineal foot; static
load, $40 pounds per hneal foot. This bridge to
have 10 floor beams spaced 4 feet u inches
center to center.
Present superstructure to be removed by.
and to be the property Of, contractor for new
superstructure; this to be removed as soon as
notice is given by masonry contractor that he
is ready to proceed with foundations.
No, 3. Over Bailey's run, robert Bailey's
(skew bridge).
Plate-girder bridge, % feet clear span. 81 feet
extreme length. Depth of girder IS inches.
load, 625 pounds per lineal foot.
No. 4. Over MontOur run, at Scott's-
Plate7girder bridge, AZ feet clear span, 50 feet
extreme length. Depth Of girder. 20 inches.
Live load. 700 pounds per lineal foot; static
load, $50 pounds per lineai foot This bridge to
have three intermediates floor beams.
No. D. Over Plum creek, Armstrong; run.
Plate-girder bridge, 30 feet clear span, 80 feet
extreme length. Depth of girder, q inches
Live load, LOO pounds per lineal foot; static
load, $50 pounds per iineal foot.
(skew bridge).
Plate-girder bridge, 30 feet clear span, 30 feet
extreme length. Depth of girder % inches.
Live load, l,700 pounds per lneal foot; static
M n6a narI
No. z. Over Little Sewickley creek, at A
Kaufman's.
Stone arch bridge, 80 feet span. segmental
arch.
No. s. Over Potato Garden run, MarshaIrs
old mill.
Plate-girder bridge, q feet clear span, 81 feet
extreme length. Depth of girder, 2S inches.
Live load, l. ,TU0 pounds. per Hneal foot; static
load, 80 pounds per lineal foot.
(AlsO for repairs to masonry of bridges over
LOwries run, at Courtney's mill, and Piney
Fork, at McGOwan's.l
Clear width Of all bridges to be II feet. All
bridges TO have wrought iron floor beams,
these beams Except where sizes are shown on
plans) to be proportioned to carry distributed
1--we load Of at least ten tons. All girder bridges
to have (unless otherwise specifed) two inter-
mediate transverse floor beams. Plank floor
ing on girders (unless otherwise specifed) to
fit down close on top fanges of girder, and to
project outside of fanges inches. Ali bridge
timber Except wheelguards) tc be sound
white oak; wheel-guards to be sound straight
grained pine.
Deck-girder bridges to be provided with
heavy wrought-iron protection railing. Rail-
ing stanchions to be securely connected with
iron girder, and not attached to wooden floor.
ALI iron to be good bridge iron and to COM
ply with specifications. Workmanship to be
first class and conform to specifications.
Bridge contractors should examine the sites
for themselves to ascertain their peculiarities,
the extent of false work required and facilities
for transportation, etc., before bidding.
MASONRY
The approximate quantity of masonry is
about 2 400 cubic yards, and must be of good
quality and conform to specifications.
Bids to be by the cubic yard in place, price to
include excavation, pumping, Snoring. Golfer
dams, etc.
Stone to be sound and durable, and to be APP
proved by the County Engineer.
Contractors must visit the sites of proposed
bridges before submitting bid.
The county will furnish the cement loaded
on cars at any railroad depot in the cities Of
Pittsburg or Allegheny, the contractor to Bay
the freight. =
All bids must be addressed to the County
Commissioners and indorsed, proposals for
Bridge Superstructure," or Bridge Masonry"
panied by bidders bond, with two sufficient
sureties in the sum of not less than so per
cent of the whole amount of the bid. Bidders
must bid for each bridge separately, and may,
in addition, bid for the lot as a whole.
The right to reject or and all bids is re-
served.
The party to whom the contract is awarded
shall give bond, with two sufficient sureties, in
double the amount of the contract, for the
faithful performance of the said contract.
Specifications and forms of bond can be OBJ
tanned at the office of Chas. Davis, Esq,
County Engineer, after Thursday, April Is,
1889. JOSIAH SPEER
County Controller.