
"Why aren't you going to jack pillar 4?" "Big problems if we jack it, I won't talk about it" said the job supervisor for IHC on the day we met, I'll call him Bubba 'cause he never told me his name. When we first met on his 2nd day on the job he was cagey, reluctant to talk so I said "look, I'm just following through since I've written many articles through the demolition and rebuilding." Thoughtful pause, then, "are you the guy who wrote the article about when the pillar fell and almost killed a worker?" I said yes, he said wait and after rummaging in his cab he produced the engineer's drawing of the bridge and the work to be done and proceeded to explain everything in great detail except why he wouldn't be jacking pillar 4, that's the most northern pillar and it's included in the work order.
Each day I returned as they went from pillar 1 to pillar 2 to pillar 3, never once did they touch pillar 4 nor the abutments. Each pillar has has the end of 20 girders each sitting on their own steel plate for a total of 20 plates, some of which may have been put in backwards. Each abutment (where the bridge meets the existing road on the north and south ends each have only 10 girders and 10 plates but were not worked on nor, as far as I know, may not be in the work order. These numbers are important.
Friday I again arrived and approached Bubba and the DOT inspector as they sat and watched the jacks being removed from pillar 3, in the photo above, they both piped up and said "out of 100 only four plates needed fixing" and we're done, ok lets count. Each pillar has 20 plates, they were at pillar 3 for a count of 60 plates, if they had done pillar 4 that would have been 80 plates, if they had done the abutments that would be 100 plates. But it is unclear if the abutments were included in the work order but would have required the crew to climb the "rip-rap" covering the hillsides climbed done from above, neither of which happened.
Monday, July 31 I returned to observe the crew working on anther project included in the work order, closing a gap in an improperly placed "Wing Wall" allowing water to infiltrate under the bridge where it didn't belong. Again I ask Bubba why pillar 4 was not worked o and he said "because the fucking, cry baby tree huggers would raise hell if we crossed the creek" I must say this was typical for Bubba as often he went on rants about the idiots who believed in global warming.
As I sat down Tuesday morning to write this article, after much thought about what to write I decided I would get some explanation from NM DOT district chief Brian Torres. On my 2nd call he answered and I ask him why pillar 4 had not been done and he said he was told that all 100 plates had been looked at and fixed, I said no and recounted this story, he ask me if I had been there each day and I said yes at which time he said he would have to investigate and get back with me; if and when Torres gets back with me I will update the saga.
The day before wok began, I had met the DOT inspector, the one who didn't know why he was there, so I explained the situation, he, claiming to have vast knowledge of bridges thought the girders would have to be lifted 4 to 6 inches but Bubba later assured me that the girders would be lifted 3/16th of an inch.

A 50 Ton hydraulic jack used in the lifting of the girders. The Lift Weight" of the end of each girder was calculated to be 57 Tons so each girder got 2 jacks making for the placement of 40 jacks to lift all 20 girders off each pillar at the same time and the same 3/16 of an inch. In the lead photo can be seen the hydraulic hoses hanging down.

The jacks were slid into the observation slot below each girder. Before the jacks are placed the pressure plate (sometimes called a "Sole Plate" had to be un-welded from a plate that is embedded into the bottom of each girder end. After the girder is jacked the sole plates and a thick rubber mat can just be slid out. The rubber mat (3 inches thick or so) is what gets replaced on a 30 year maintenance.

Just a shot of a pillar and, below, the plates sitting on the rubber mats and ready for the girders.


A gap being filled by gluing in a thick layer of spongy rubber like a weather rubber. The gap, according to the engineer's drawing is proper but the lower concrete footer called a "Wing Wall" was to have been placed 3 inches further in so the concrete above the gap overhangs by that 3 inches so that water drips to the ground without entering the gap and flowing under the bridge. These wing walls are short footers at each corner of the bridge and are part of the abutments. The concrete structure above the gap runs the full length of the bridge and support the sidewalks and anti suicide fences.