Seeing the trackhoe hitting the bridge brought back memories for me. When I was 16 I would drive truck during the summers hauling some good size loads around Utah, Colorado and Wyoming. One time I hauled a loader/backhoe from southern Utah to Salt Lake City. The backhoe didn't run so I had to nose the trailer down in front of the backhoe and drag it up onto the trailer with the trucks winch. The truck and trailer were setup for oil field work and I was well versed in using them so it wasn't a big deal.
The trailer wasn't a long trailer, only about 30' to 35' long so with the edge of the front bucket hanging over the back of the trailer about a foot and the backhoe bucket right at the front of the trailer it put the backhoe boom just over 13' high which was plenty legal.
The trip went well until I got into SLC. I'm running along in the outside lane of the freeway, bumper to bumper traffic in all lanes but moving along at a good clip. Then I see a sign, low clearance ahead, 13 feet. About a half second of running the math told me things were not gonna fit so I carefully start shutting down the truck but if I stop too fast cars are going to run into the back of me. If I don't shut down fast enough the results should be obvious. Now another problem crops up, a highway patrol car is parked on the shoulder so I can't get over, I have to stay in lane.
Long story short, I got stopped with the backhoe boom about 10' from hitting the bridge. No cars ran into me so life was good. But then the passenger door is jerked open and the highway patrolman starts screaming at me to get the #$%&* truck moving. I didn't say a word, just pointed up. He looked at the bridge and the boom, said some things that would make a sailor blush. I mentioned that if he wanted to move his car and direct traffic I would try to get into the bar ditch so I could get under the bridge. In a very unkind and direct way he let me know what I could do with the truck, backhoe and bridge. He then slammed the door, ran to his car and left.
It was an interesting few moments.