Oregon Bridge / Brick & Stick axle weights

Yeah. The 53' will need the overlength permit. I'll adjust where the drop is and see what options it opens up.

I like the truck setup. Not particularly interested in two rear steerables - but I can understand why he did that.

I've considered a 48' tri-axle, but right now I see more flexibility with a 53'. Like @RGN noted, I'll adjust the drop and see where I land.

 

I had never considered that you could be too light on the steers. Point taken.

Per Oregon Permit Table 1, you can go over 12,3 on the steers - just depends on what your steer axle and tires are rated for:
Table I has two provisions. **Allow the lower (lesser) weight of the two.**
1. Limits legal weight to the manufacturer’s side wall tire rating.
2. Limits legal weight to 600 lbs. for the sum of tire width.

With an appropriately spec'd front axle, with the correct tires, you can push up to 20k.

 

Yes, I am still in the process of specing. Imagine I will be for a while longer.

To your freight location area, I'm in Oregon, so that's my primary starting point, but I've done OTR and want to keep this more NW regional (OR, WA, ID, MT, UT).

I'll give Western a call when I have a chance. I know COTC runs 105,5 setups too. I'll have to give them a call too and see if I can drag their setup out of them.

 

@RGN and @Long FLD, thanks for the suggestions and pointing me at a solution I wasn't quite looking at.

It took me a couple of hours with Excel and the Oregon weight permit charts/website last night, but I got it to work. All I needed to do was move the lift axle closer to the front for the weight spread (sometimes drawing it out by hand and making changes just doesn't work as well).

As long as I can suck up 18" on the 5th wheel, I'll be at 5.49 ID off-track.

From my original post and mostly using your wb spreads as a starting point,

Tractor: 268" / Trailer: 53', 18" kp, 16' 6" spread
1 ----- 2 --- 3 -- 4 ---------------- 5 -- 6 -- 7 ---- 8

Axle / Wheelbase / Table 2 / "Requested"
1 - 4 / 22' 04" / 56,500 / 56,500
1 - 8 / 69' 07" / 105,500 / 105,500
2 - 4 / 09' 08" / 42,500 / 42,000
2 - 8 / 56' 11" / 91,000 / 91,000
5 - 8 / 16' 06" / 53,500 / 49,000
Steer: 14,500

Steer - Good
Outer & Inner bridge - Good
Axle groups - Good

BTW, @RGN, you have a 269" wb truck there. -- BUT, it put me on the right track (12-9 = 153" / 5-4 = 64" / 4-4 = 52" --- 269")

 

Too funny! You guys crack me up!