Pittsburg dispatch. [volume] (Pittsburg [Pa.]) 1880-1923, 1890-04-21
PROPOSALS
PROPosALs
FOR
BTidgE 6upETGtTuEtuTE
M AS N r Y.
OFFICE OF COUNTY CONTROLLER, ,
PITTSRURG. PA. ADril Is ISg0

| OFFICE OF COUNTY CONTROLLER
| PITTsBURG, PA, April Is, 1890.
Sealed proposals will be received until
| O'Clock p M WEDNESDAY, April g. 1890
at this office for the superstructure and mas,
| onry of two wrought-iron, pin-1onnected truss
| and tour plate-girder highway bridges, and for
superstI ucture only Of one wrought-iron. pin
connected truss bridge; also for the conStruc-
| tion of two stone-arch bridges, located as fol-
| lows:
No. l. Over Montour run, Skaters.
| Through plate-girder bridge, 4613 feet clear
| span. 81 feet extreme length; depth of girder,
60 inches: live load. 200 pounds per lneal foot;
static load, $50 pounds per lineal foot. To have
! intermediate floor beams.
| No. 2. Over Toms run. at DiXmoDt.
Stone-arch bridge, 20 feet span. semi-circular
arch.
No. g. Over Poketos creek, Dougherty's Mill
| (skew bridge); low truss bridge. so feet center
| to center of end pins: two trusses, each feet
| high and divided into six panels; to have ver-
ticle end posts; live load LOO pounds per lineaL
| foot static load, $50 pounds per lineal foot.
No A. Over Big Sewickley creek, Bradford's
| farm (skew bridge).
| 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 100 pounds per lineal foot; static
| load $50 pounds per lineal foot.
No. 8. Over MOntour run, Beaver road cross
| ing (skew bridge).
Through plate-girder bridge. 81 feet clear
span, 6O12 feet extreme length; depth of girder
60 inches: live load 100 pounds per lineal foot;
static load, $50 pounds per lineal foot. This
bridge TO have intermediate floor beams
No. 6. Over RobinsOnS run, Willow Grove ia
tion. Bridge on gradel.
Plate-gIrder bridge 81 feet clear span, IS feet
extreme length; depth OF girder % 1lches; live
load. 700 pounds per lineal foot: static load,
$50 pounds per lineal foot.
No. 7. Over Flaughertys run. E. Worth's.
Through plate-girder bridge. so feet clear
span, 531a feet extreme length; depth of giFder.
60 inches; live load 700 pounds per lneal foot;
static load $50 pounds per lineal foot. This
bridge to have intermediate floor beams.
No. s. Over Burns run Gumberts.
Stone-arch bridge, l6 feet span. semi-circular
arch.
No. g. Superstructure of bridge over Back
channel, Ohio river, at Neville Island. High
truss bridge of three spans. each l94 feet center
TO center of end pins; height of tluss % feet,
and divided into IA panels. Clear width of
roadway, 20 feet. Live load. 2 400 pounds per
lineal foot; static load, l,5OJ pounds per ineal
foot
(AIso 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 bidding.
MASONRY.
The approximate quantity of masonry is
about 1900 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.
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 he accom-
panied by blddeTs 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 ad-
ditioD, bid for the lot as 4 whole.
Bids for bridge No. must be addressed in
separate envelopes tn the Commissioners of
Weslmoreland 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.
1he 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
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,
ap15-5D County Controller.