Jefferson County
A seventeen-man quarry on one of the easiest networks in the state
Cedar Springs Quarry records 17 employees and sits 1.22 miles from the middle of the place, which is a close fit between the record and the ground.
The roads it works are as open as Missouri gets.
Only one of the three is county-maintained and the nearest is 2.53 miles out.
And here the posted count is worth almost nothing
Those seven postings look like a constraint and are not. The median of that group here is rated 49.5 metric tonnes, well above the 36.3 a fully legal 80,000 lb truck weighs, so a load crosses the typical posted structure whole rather than part loaded.
That gap is a property of this corner of the state rather than of Missouri generally. Around the St Louis metropolitan counties the posted group runs about 50 tonnes and only a fifth of it also fails on load; down in Cape Girardeau and St Francois the same group runs 19 to 25 tonnes and three quarters to all of it fails.
So there is no single correction that would be right in both places. The count that decides a route is the below-legal one, measured where the work actually is.
For a machine sold out of here that means an easier working life than a page full of posted crossings would suggest — highway wear rather than route-picking wear, and that shows in the running gear.
Day cabs and road tractors off the metro lanes. Around the Cedar Springs workings, and across Jefferson County and Franklin County, this corner turns over a steady amount of it.
- The typical posted crossing here sits above what a fully legal truck weighs. It is the below-legal rating that decides a route.
Around the Cedar Springs pit, and across Jefferson County and Ste Genevieve County, there is usually one sitting.