HomeMy WebLinkAboutR-274506a
a
em ror Traffic Sorrier or ✓ Temporary
T / Traffic, Barrier
Truc�Mounfed Irnpocf Aftenuafor i i _
ai Confraclors op ion (Typ all Sfeps) °
lb 3f 3e 3e
lb Temp -ary
Trench Piles, Typ 3
Traffic Barrier
_ __ - -- - -- Wing wall, Typ
T-Fvlure Oakesdale Avenues - TFuhlre oakesdale Avenue 3b
Decked Bulb Tee SECTION
Girders rvNh
--- - - - - -- -- Temporary Topping
---- - - - - -- Temporary Traffic 1a Modify any existing utilities.
Cover Plains, Typ lb Cut existing pavement to receive traffic cover plates.
Oh Excavate trench for the pile cap, and drive piles on both
abutments of the overcrossing. Shore trench to maintain a
ld vertical excavated face and prevent raveling. So thattraffic ph 3C 3a Remove traffic cover plates. Excavate existing roadwa 3d Place shear block CIP concrete.
5 on SR 405 can resume unimpeded, piles that are not P 9 y
completely driven by the end of the off -peak traffic work shift d pavement and subgrade as required to install the precast 3e Place compacted backfill behind pile cap and end
C shall be cut off and rewelded at the start of the following 0 bulb tees. diaphragm with granular material. Place 0.25 -foot AC
work shift. In addition, the trench shall be covered with a 3b Install bulb tees and weld ties within the top flange and wearing course over .25 -foot leveling course pavement
r r /, /I 1 c steel cover plate and temporary hold down devices. diaphragm blockouts. Grout tie blockouts and top flange transition over shoulder ballast backfill back of pavement
Position 'temporary traffic barrier' and traffic control devices r keyway closed. seat and existing pavement Transition shall match existing
to facilitate the work by diverting the traffic into adjacent 3c Place a temporary 0.104 -foot AC pavement overlay onto the SR 405 roadway grades and overcrossing superstructure.
lanes. Reset barriers after each shift top flange surface of the bulb tees. Temporary topping shall 3f Place a'temporary traffic-barrier' at existing curblines,
1 d Drive additional pipe piles for the soldier pile wall to the limits extend a minimum of 2 -feet beyond the outside face of the measuring 42 -feet north and south normal to SR 405
shown. temporary traffic barrier. centerline.
PLAN PLAN 3g Form and place CIP wingwalls connected to the pile caps.
STEP t STEP 3
Excavate Trench and Drive Piles Excavate SR 405 Roadway,
Place BuIbTees and AC Transition
A Temporary _
Traffic Barrier
2c 2a
t
Pile Cap, Typ
Ij 11
S Ure0akesda/eAvenue 2b 4e CIP Concre /e PressureTrealed
&=
Pasts, Typ Timber Lagging, Typ
4 - 4 `� 4 4b •
Temporary Traffic C _ 4e 4a Excavate the soil from underneath the bridge superstructure.
Cover Plales,Typ 2a Remove the traffic cover plates over the excavated trench, , Weld short lengths of the prefabricated angle assembly onto
f g form and place reinforced concrete pile cap segment the piles and install pressure treated timber lagging as the
projecting longitudinal reinforcing bars for splicing to excavation proceeds.
�@ subsequent pile cap segment placements. Construction 4b Pump a sand and water mixture into the voids behind the
joints shall be vertical. The longitudinal reinforcement shall lagging after installing the timber lagging to an elevation
be cleaned prior to successive pile cap placements. Place below the subgrade of Oakesdale Ave.
additional lengths.of pile cap over the adjacent soldier pile
walls. Oakesdale Avenue 4c Weld the prefabricated channel asembl for attaching the
CIP concrete piles.
bridge girders, rete fascia walls onto the pipe
/
11 2b Place leveling grout pad and install elastomeric bearings for 4d Place the CIP concrete fascia wall and monolithic traffic
2c Following each work shift the pile cap segments within the Q barrier.
roadway section shall be covered with temporary traffic SECTION 4e Excavate as required behind the completed soldier pile wall
cover plates. Repositioned the 'temporary traffic barriers' as to place the CIP concrete retaining walls to the limits shown.
4quired. Backfill behind the walls after the concrete has obtained
PLAN design strength.
_ STEP_ 2 STEP 4 (BY OTHERS)
Place Pile Caps Excavate Under Bridge and
Construct Fascia
RFONIN STATE FED. AID PROJ. NO. "NO. TOTAL SV SR 405 BRIDGE
A► Washington State �' NO.
DRAWN �. LAZrlR.n 10 WASH � ` °mp � g TUKWILA TO SOUTH RENTON
CHECKED JOB NUMBER
OF Department of Transportation HOV LANES
PROJ. ENGR. C, $%A D 46 �A g I�I6t OAKESDALE OVERCROSSING MEET
DIST. ADM., CONTRACT NO.= E1` OF
Y
DATEI REVISION BY APP'D APPROVED CONSTRUCTION .SEQUENCE.- '
steers
DOT FORM 221 -011
Revised 9/82