South Park Bridge - Project photo documentary
To document construction of the new South Park Bridge, the King County Road Services Division is working with historic building documentary photographer and lecturer John Stamets. We encourage you to check back frequently to follow the bridge construction progress!
Click on cropped photos below to see the full views.
March 2013
March 29, 2013
South side of Pier 3.
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March 28, 2013
First formwork is installed for north wall of Pier 4. In distance is Pier 5.
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March 28, 2013
Pouring the high wall of Pier 3.
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March 28, 2013
On right is formwork for south wall of Pier 4.
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March 28, 2013
At Pier 4 the caisson floor ended up 26” lower than the floor at Pier 3. To compensate, the trunnion tower bolts at Pier 4 and surrounding concrete are being built up to the design grade.
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March 28, 2013
At the base of a trunnion tower: ironworkers applied blue torque wax to facilitate turning zinc-coated steel bolts.
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March 28, 2013
Workers construct tent frame over new counterweights before spray painting.
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March 26, 2013
On east side of north approach, structural earth wall is covered with precast concrete fascia panels.
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March 25, 2013
Inside cofferdam at old Pier 3, water level is kept 2 ft lower than river during demolition to prevent murky water from entering river.
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March 25, 2013
Final floor pour at Pier 4 is cured with hot air blowers beneath the plastic tarps.
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March 25, 2013
The third & final pour of the caisson cap at Pier 4.
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March 22, 2013
Pouring the traffic barrier on west side of north approach.
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March 21, 2013
Demolition of old Pier 3.
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March 21, 2013
Inside Pier 3 at night, a King County engineer (center) monitors progress.
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March 21, 2013
Pier 3 on the night shift.
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March 20, 2013
Old Pier 3 under demolition: pinion of drive system rolled along this rack to open and close bridge.
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March 20, 2013
During demolition of old Pier 3, the skeleton for the drive system is revealed with pinion rack above and rocker guide tread below.
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March 20, 2013
During demolition of old Pier 3, support structure for drive system is revealed.
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March 20, 2013
Old Pier 2 is surrounded by a cofferdam as it awaits demolition.
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March 19, 2013
Pier 4 is almost ready for the finished floor pour atop the caisson cap.
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March 14, 2013
Pouring the west interior wall inside Pier 3.
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March 14, 2013
Pier 4 in foreground is scheduled approximately two months behind Pier 3 in distance.
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March 14, 2013
Inside Pier 4: note elevated rebar cage in far corner to support trunnion tower.
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March 11, 2013
Two-man tugboat crew nudges barge loaded with formwork up against Pier 4.
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March 11, 2013
North draw span of new bridge is being painted its finished color: a reddish "burgandy brown."
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March 11, 2013
Safety Plan at Pier 4. It's 70 ft. down that hole surrounded by yellow warning tape. Workers are tied off.
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March 7, 2013
Ironworker torques horizontal rebars one more time at trunnion tower foundation insider Pier 4.
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March 7, 2013
Pier 4 after the 5 ft. cap pour is still wet from water cure. "Candy cane" rebar with 180 degree bends ties in all three concrete pours so 10 ft. slab acts as one.
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March 5, 2013
The "5 ft. cap" pour is the second and largest of three concrete pours to complete the slab inside Pier 4.
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March 5, 2013
Inside Pier 4 after 5 ft. cap pour. At Pier 4, the trunnion tower bolts - surrounded here by green rebar terminators - are 2.5 ft. higher than at Pier 4.
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March 5, 2013
During the "5 ft. cap" pour at Pier 4, engineers, surveyors and ironworkers continually monitor and realign the tower bolts.
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March 5, 2013
East interior wall is under construction inside Pier 3.
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March 5, 2013
Pier 3 at night.
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March 1, 2013
Structural Earth Wall (SEW) is installed on east side of new south approach.
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March 1, 2013
Sidewalk on south approach will be between structural earth wall on left and moment slab on right. Long steel bolt tie-backs will provide the needed tension for the SEW to resist lateral forces. Pea gravel will fill the gap.
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March 1, 2013
East side of new south approach. The Structural Earth Wall (SEW) design is different than that used for the old south approach.
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Also see photos from:
Information on the South Park Bridge website is available to people with disabilities in alternate formats upon request by calling 206-263-6482 or 711 for the TTY relay service.
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