A yard three quarters of a mile out, and a river doing the heavy work
The North American Rail Network maintained by the Federal Railroad Administration and the Bureau of Transportation Statistics places a rail yard 0.74 miles south-west of the middle of this borough, on the river bank. It sets the pattern for everything else nearby.
This is a river corridor rather than a quarry district. Downstream sit a liquid bulk terminal 4.85 miles south, the Bessemer yard 7.83 miles south and the Verona yard 8.02 miles south-west — a chain of rail and water transfer running towards the city rather than a ring of pits.
What is left of mining here is small. A coal mine 3.66 miles west carries 5 people and a refuse site 6.61 miles south-west carries one. The freight that matters now is other people’s tonnage moving through, not tonnage coming out of the ground.
Two hundred and sixty structures and only seven posted
That transfer economy needs roads that carry weight, and here they do. Within 10 miles the National Bridge Inventory records 260 structures and just 7 are posted for load — three borough, two township, one county and one state.
It is a strikingly light touch for this state. The nearest posted crossing is 5.66 miles east, and the tightest inside the whole circle rates 18.0 US tons 8.80 miles away, which still admits a part load. Nothing inside 10 miles of this borough is closed to a commercial vehicle on weight.
Allegheny County maintains 174 bridges of its own — one of the larger county networks in Pennsylvania — and posts 6. So here, unusually, the county figure and the circle tell the same story rather than contradicting each other.
So the wear here is distance, not detours
Those open roads change what a truck looks like when it comes off them. Where almost nothing is posted, a loaded truck goes the direct way every time, so the mileage is honest and the springs and hoist see the loads they were specified for.
It is the opposite of the anthracite and township country further east, where part loads and long ways round are the norm. A truck from this borough more often carried a proper load on a proper road, and reads as ordinary highway and duty wear — the tightest crossing in Allegheny County within 10 miles of here still takes 18.0 US tons, 8.80 miles out.
The one thing to watch is river-corridor work of a different kind. A tractor that ran to a bulk terminal 4.85 miles south rather than to a quarry has queuing hours and coupling wear that never appear on the odometer.
North it goes quiet quickly
Beyond that corridor the density falls away fast. A preparation plant 10.02 miles north-east carries one employee.
South-west is where everything is: the Sharpsburg yard 11.10 miles down the river, and the whole Pittsburgh yard and terminal network beyond it. So the working geography of this borough is a line rather than a circle, and it points downstream.
That is worth knowing when reading a truck. A vehicle based here almost certainly ran south-west repeatedly rather than in every direction, which is a narrower and more predictable history than most places in this county.
Say whether it was a transfer tractor or a construction truck, because the two age in different places. Queuing and coupling wear against low mileage is one history; loaded road miles in Allegheny County traffic is another.
- The bulk terminal 4.85 miles south is that kind of work, and queuing hours against low miles is a different truck from a construction one.
- I am up the hill away from the river.No trouble at all.
Around the yard 0.74 miles south-west they turn up steadily.