Seven of those sixteen are county-maintained against nine the state’s — close to an even split, which is unusual in a state where the state highway department maintains 89 per cent of every structure and most county tiers are too small to register at all.
Rated at exactly the weight of an empty truck
Those sixteen produce a ceiling of the sharpest kind. The lowest crossing a commercial vehicle can use in the circle is rated 11.0 metric tonnes, about 12.1 US tons, on a state secondary road 4.63 miles out in the next county over.
11.0 tonnes is exactly the tare weight of an empty tandem dump, so the crossing takes the truck and not one kilogram more: the payload is zero. The raw minimum in the set is 3.6 tonnes, so most of what is restricted here is closed to a commercial vehicle outright and the lowest one that opens, opens empty.
Nine structures in the whole state carry that exact rating — 0.8% of the restricted set against a median of 27.2 tonnes — and this circle holds one of them. That is a different fact from having no cap, and a different fact again from a bridge no truck can use at all.
Stone out of the Edgefield Quarry gate 3.00 miles from the middle of town, worked around a crossing 4.63 miles out, is where a lot of it turns up.
- Around here the county holds nearly half the restricted crossings, which means more detours and more low-speed work than a truck on a state route would see, and that lands in hours rather than in miles.
Around the Edgefield Quarry gate 3.00 miles out, and on the county roads that run the 2.81 miles to the nearest posting and beyond, the same trucks come up for sale for the same reasons.