This has been a problem for decades. Truckers have been known to relieve themselves into bottles and throw them along the side of the freeway. It costs a lot since they apparently have to be treated like hazardous waste. And it gets even worse for crews that do things like mow lawns or trim weeds alongside freeways. Apparently they're in such a hurry that they don't even bother to pour them down a toilet at a rest area or maybe a truck stop. Still - don't newer sleeper cabs have some sort of toilet? I guess that wouldn't necessarily mean using it while driving, but easily just pouring it in and then taking care of it later at a dump station.
Chances are you've seen them along Interstate 5.
archive.redding.com
In 1999, when he was head of maintenance for Caltrans' second district, Peterson said he sent crews on a urine bottle cleanup along Interstate 5 in Shasta County.
In just a few days, crews collected more than 350 gallons of urine along a 67-mile stretch of freeway from Cottonwood to Dunsmuir.
"It's only gotten worse since then," he said.
The bottles also are costly to remove, Peterson said.
Because crews can't be sure if the fluid really is urine, hazardous materials specialists must be brought in to test the liquid before it's disposed in a sewage system.
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And it's not just urine that's getting tossed.
Peterson said containers filled with feces and other human waste like used dialysis supplies and syringes are becoming ever more common along the highway.
Peterson said the bottles of urine in particular pose a health hazards to road workers -- especially those who run the mowers that trim foliage along the highway.
The bottles have a tendency to explode when they're run over -- even more so when it's hot outside.
Long-haul truckers, Peterson said, are mostly to blame for the urine bottles.
Saedra Wederbrook, the local Caltrans Adopt-a-Highway Coordinator, said the bottles often are found in areas where truckers pull off the road to stop or along rural off-ramps where it's easy to chuck a bottle without being spotted.