Pittsburg dispatch. [volume] (Pittsburg [Pa.]) 1880-1923, 1890-04-19
PROPOSALS
PROPOSALS
FOR
BridgH 6upET8tTuEtuTE
AND
M AS SONRY.
OFFICE OF COUNTY CONTROLLER, I
PITTSRuRG PA Anril Is IS9O

| OFFICE OF COUNTY CONTROLLER
PITTsBURG. Pa, April Is, 1890.
Sealed proposals will he received until
| o'clock P. M, WEDNESDAY,. April 23 1890,
at this office for the superstructure and mas
onry of two wrought-iron, pin-oonDected truss
and four plate-girder highway bridges, and for
superstIuctur only OF one wroughtiron, pin
connected truss bridge; also for the construc-
tion of two suone-arch bridges located as fol-
lows:
No l. Over Montour run, Shaffers
Through plate-girder bridge, 4611 feet clear
span. So feet extreme length; depth of girder,
go inches: live load 700 pounds per lineal foot;
static load. $50 pounds per lineal foot To have
8 intermediate floor beams.
No. 2 Over Toms run. at Dixmont.
Stone-arch bridge, 20 feet span. semi-circular
arch.
No. 8. Over Poketos creek, Dougherty's Mill
(skew bridge); low truss bridge. so feet center
to center Of end pins; two trusses, eacn 7 feet
high and divided into six panels; to have ver-
ticle end posts; live load 700 pounds per lineal
foot; static load, $50 pounds per lineal foot.
No. 4. Over Big Sewickley creek, Bradford's
Low truss bridge, II feet center to center of
end pins, trusses each feet high and divided
into panels; truss to have vertical end posts;
live load. LOO pounds per lineal foot; static
load. $50 pounds per lineal foot.
No. o. Over Montour run, Beaver road cross
ing (skew brdge).
Through plate-girder bridge, 81 feet clear
span, 6015 feet extreme length; depth of girder.
go inches; live load, LOO pounds per lineal foot
static load, $50 pounds per lineal foot. This
bridge TO have intermediate floor beams.
No. g. Over Robinsons run, Willow Grove ia
tion. Bridge on grade).
Plate-girder bridge, 80 feet clear span, 35 feet
extreme length; depth OF girder. % Inches; live
load. j, 700 pounds per lineal foot: static load,
$50 pounds per lineal foot.
No. 7. Over Flaughertys run, E. Worths.
Through plate-girder bridge. so feet clear
go inches; live load l. 700 pounds per lneal foot;
static load. $50 pounds per lineal foot. This
bridge to have intermediate floor beams.
No. 8. Over Burns run, Gumberts.
Stone-arch bridge, l6 feet span. semi-circular
arch.
No 9. Superstructure of bridge over Back
channel. Ohio river, at Neville Island. High
truss bridge of three spans, each 1874 feet center
to center of end pins; height of truss 2S teet,
and divided int0. II panels. Clear width of
roadway 20 feet. Live load. 240O pounds per
lineal foot; static load, 1,5Oo pounds per lineal
foot.
(Also for repairs to masonry OF bridge No. l
over Watson rum.
Clear width of all bridges. unless otherwise
designated, will be II feet.
Bridge contractors should examine the sites
for themselves to ascertain their peculiarities.
the extent of false work required and facilities
for transportation, etc. before before bidding.
The approximate quantity of masonry is
about 9, 600 cubic yards and must be of good
quality and conform to specifications.
Bids to be by the cubic yard in place, price to
dams, etc.
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 pay
the freight.
All bids must be addressed to the County
Commissioners and indorsed. proposals for
Bridge Superstructure." or bridge Masonry"
as the case may be, each proposal to be accom-
panied by bidders bond, with two sufficient
sureties in the sum of not less than 50 per cent
of the whole amount of the bid. Bidders must
bid for each bridge separately. and may in ad-
diton. bid for the lot whole.
Bids for bridge No. must be addressed in
separate envelopes to the Commissioners of
West estmoreland and Allegheny counties, and
for bridge No. to the Commissioners of
Beaver and Allegheny counties.
The right to reject any or all bids is reserved.
The party to whom the contract is awarded
shall give bopd, with two sufficient sureties in
double the amount of the contract, for the
faithful performance of the said contract
Plans may be seen and specifications and
forms of bond obtained at the office of Charles
Davis, County Engineer, after Thursday. April
II, 1890. JOSIAH SPEER,
iapl5tD County Controller.