Chris Talbott stands with a pile of tumbleweeds in front of his Colorado Springs, Colo., home. Parts of Colorado are being overrun with tumbleweeds because of the drought affecting much of the western U.S.

ORDWAY, Colo. — Mini-storms of tumbleweed have invaded the drought-stricken prairie of southern Colorado, blocking rural roads and irrigation canals, and briefly barricading homes and an elementary school.

Firefighters even had to cut a path through them to get to a pregnant woman who feared she’d be trapped in her home if she went into labor.

The invasion of the tumbleweed, an iconic symbol of both the West’s rugged terrain and the rugged cowboys who helped settle it, has conjured images of the Dust Bowl of 80 years ago, when severe drought unleashed them onto the landscape.

“It never ends,” said Chris Talbott, as he used a snow shovel to push the weeds off his lawn in Colorado Springs.

The latest drought, which began in 2010, has created tumbleweed trouble in parts of New Mexico, Oklahoma and Texas. Desiccated Russian thistle, a woody leafy plant, and kochia, both invasive weeds from Eurasia, are the culprits.

In Colorado, herds of cattle would eat the tumbleweed, helping to keep it in check, but many ranchers have reduced or gotten rid of their animals because of the drought. After the first winter freezes in November, the plants broke loose and began rolling with the wind.

“They looked like sheep running across the prairie because the whole prairie was alive,” Ordway rancher Doug Tecklenburg said of a March 15 wind storm. He’s taken to driving with a pitch fork in his truck to get through clogged roads.

For municipal authorities, there’s a big price tab. Crowley County, high plains country in southern Colorado, has spent $108,000 since November — more than a third of its annual budget — clearing roads and bridges of tumbleweed.

Aside from the roads, the tumbleweeds have buried cars and blocked houses in new developments on the outskirts of Colorado Springs.

Officials have tried to attack the tumbleweed with snow blowers and rotary attachments on tractors used to cut crops like alfalfa. They’ve even tried to bale it for cow feed. But the wiry, springy weed clogs machinery, and baling is too expensive to be economical.

Burning it is another option — one authorities are wary of in wildfire-prone Colorado.