Saturday, June 29, 2019

Bridge Construction at Ridgefield, WA

(no Bridge Hunter)
3D Satellite
They are replacing a one-lane wood bridge with a longer two-lane bridge that also goes over the BNSF tracks.

So why am I posting about yet another concrete-girder bridge? Because the contractor has done a good job of documenting the construction and because the project includes "ground improvement" that I am still trying to understand. [FHWA-project]

The contractor, Ceccanti, evidently bought a MLC300 and Manitowoc helped them assemble the base at JT Marine's yard.
(new window)  (source)

Then they barged the MLC300 base and a Grove crane to the worksite and...
(new window) (source)

...added the boom and counterweight stacks to the MLC300 at the worksite. They first used the crane to help improve the ground that will be under the bridge abutment using a ground penetrating vibrator. [FHWA-newsletter] At -0:39 in the following video you can see the crane push its counterweight stack out just before it raises the boom because the boom itself is a load with a long radius when its on the ground. In fact, some cranes need help from the assembly crane to get the boom up.
Screenshot @ -0:46
[Dennis DeBruler shared this post to Manitowoc Crane Enthusiasts on June 29, 2019.]
Refuge Blog
[A view of the penetrating vibrator in action. Note the two hoses. The vibrator obviously uses hydraulic power.]
Two images of the Stage 2 video are of particular interest. The swing bridge is here. I spent a lot of time looking for the lift bridge because I can't believe I can't find it. But I can't.
@ 1:32
@ 1:34
Ceccanti, Inc posted two photos with the comment: "Crews down in Ridgefield are getting the in water support columns ready for installation starting next week! Thank you Mick Cannon for getting these shots!"
[They are building the rebar cage that will be installed into a pier shaft.]

[As the comment explains, we don't see the drilling of the pier shafts because they lost the last week of activity.]
Installing a rebar cage.
Setting the first set of girders. "Each girder was about 130ft long and approx 130,000lbs."
This is a screenshot from the above video that captures the special trailer used to haul the beams. Since this road serves just a wildlife refuge, they closed the refuge during the week so the construction company could use the existing bridge.
@ -0:42
The project is expected to last until July, 2020. [FWS] I want to see how they position the crane for the middle and far stages of girder installation. I plan to check their page later and add any more "big crane" activity that I find.

June Time Lapse Video "Time-Lapse for the month of June! Some highlights from the month were crews pouring and forming the piers and abutment with concrete as well as setting the first stage of girders."

I did catch a frame showing that they used the MLC300 to help build the far pier as well as the close one and the abutment.
Screenshot @ -0:42
And I saw at least a couple of frames with a concrete pumper.
Screenshot @ -0:22

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