historicalarms
Ultra Member
As an old trucker, lots to say about this topic, first, by this point in time it shouldnt still be happening but back when we changed from imperial to metric there were thousands of truckers who didnt know how high they were as to the new signage on overpass's...lots of bumps & bruising back then.
Another point to make is that overpass's are curved higher in the middle than on the outside edges so even if you are oversize for the signage you can sometimes sneak under in the hammer lane shoulder but thats a crapshoot on wether you should be taking that route.
Another thing that isnt noticed sometimes is a "change in clearance" that changed on the signage...new 6" lift of pavement for example. ive driven under overpass's that still have the same clearance sign that it had 2 years before when I dumped asphalt under it.
And this is one you might never realize is happening until it does...buddy of mine was moving an excavator on lowboy and he should have been easily clear of every bridge on his route...but he wasnt....at highway speed he hit a frost heave in the road that bounced him high enough that the excavator boom hit a bridge girder face on. Cracked the girder completely thu, removed the hoe from the deck and the sudden stop with seat belts on ( from 60 mph to complete stop in 3 ft) put him in the hospital for a month.
Another point to make is that overpass's are curved higher in the middle than on the outside edges so even if you are oversize for the signage you can sometimes sneak under in the hammer lane shoulder but thats a crapshoot on wether you should be taking that route.
Another thing that isnt noticed sometimes is a "change in clearance" that changed on the signage...new 6" lift of pavement for example. ive driven under overpass's that still have the same clearance sign that it had 2 years before when I dumped asphalt under it.
And this is one you might never realize is happening until it does...buddy of mine was moving an excavator on lowboy and he should have been easily clear of every bridge on his route...but he wasnt....at highway speed he hit a frost heave in the road that bounced him high enough that the excavator boom hit a bridge girder face on. Cracked the girder completely thu, removed the hoe from the deck and the sudden stop with seat belts on ( from 60 mph to complete stop in 3 ft) put him in the hospital for a month.
