Montgomery County
The airfield is on the record. What it does is not.
The Bureau of Transportation Statistics puts the naval air station at Willow Grove 1.29 miles from the Census centre of Horsham, in Montgomery County, which is where the township is.
The Bureau of Transportation Statistics lists its status as care rather than active. An airfield on a map is not by itself a fact about freight.
The working traffic here is limestone, and there is a great deal of it
Beyond that airfield, eleven crushed-stone operations sit within about thirteen miles. Warrington Quarry is 3.7 miles off, Spring House Quarry 4.4 miles, Eureka Stone Quarry 5.8 miles, Rush Valley Quarry 8.0 miles, Plymouth Meeting Quarry 8.1 miles and Penns Park Quarry 8.4 miles.
Past those, East Norriton Quarry is 10.9 miles out, Plumstead Materials 11.9 miles, McCoy Quarry 12.5 miles and Blooming Glen Quarry 13.1 miles. An eleventh, 9.5 miles out, works traprock rather than limestone — a harder, more abrasive rock and a different kind of load on a body.
Two counties of gates, and a port thirteen miles away
That quarry ring straddles a county line. Warrington Quarry, Eureka Stone Quarry, Rush Valley Quarry, Penns Park Quarry and Blooming Glen Quarry are on the Bucks County side; Spring House Quarry, Plymouth Meeting Quarry, East Norriton Quarry and McCoy Quarry are in Montgomery County. A lane out of here crosses between them routinely.
That matters more in this state than in most, because the power to post a road and demand a bond sits with the local authority rather than with one county office. A run of a few miles can pass through several posting authorities.
Two larger facilities close the picture. Naval Support Activity Philadelphia is 11.3 miles away and the Philadelphia Regional Port about 13.0 miles, so this is not a landlocked corner.
Tandem and tri-axle dumps off the stone, mixers, flatbeds and day cabs, rollbacks, box trucks, service bodies, and the pickups that live around any plant gate.
Between Spring House Quarry 4.4 miles out and Blooming Glen Quarry 13.1 miles out, most of the running is short and heavy. That shows up in springs, brakes and tyres long before it shows on an odometer, and none of it stops a sale.
- Ordinary on a truck working between Warrington Quarry and Plymouth Meeting Quarry.
A quarry changes what it wants hauled, a contract ends, or a body that suited limestone suits traprock badly. Between Penns Park Quarry 8.4 miles out and East Norriton Quarry 10.9 miles away that happens often enough to keep a steady trickle of trucks standing.
The rest is the ordinary run of it — retirements, estates, a fleet renewing itself, and a truck nobody has needed since the last job finished.