LOUISVILLE, Ky. (WDRB) – An elevated stretch of Ky. 22 in eastern Jefferson County has been closed to commercial trucks, school buses and other heavy vehicles after part of a culvert began to deteriorate.

The Kentucky Transportation Cabinet said Monday that the culvert over Little Goose Creek, between Hurstbourne Parkway and Goose Creek Road, now has a 3-ton weight limit and will be replaced as early as next year.

Transportation Cabinet spokeswoman Andrea Clifford said inspectors recently discovered that several stones in the culvert supporting the road had “fallen out.” Last week, she said, crews patched a small hole in the pavement.

State officials have no record of the culvert’s original design, but Clifford said it’s believed to be at least 100 years old. A similar stone-arch culvert west of Barbour Lane on Ky. 22 was closed for months last year after part of the road collapsed.

Clifford said the state is buying land needed for a new Little Goose Creek culvert, which will extend slightly farther east than the current road. Plans call for bids to be advertised early next year.

“This posting is to prevent further deterioration until we can get ready for the replacement,” she said.

Clifford said the culvert is not inspected every two years -- as other bridges are -- because it is less than 20 feet long. But state officials began regularly monitoring the structure after noticing a hole in the pavement earlier this year, she said.

The restrictions announced Monday have led Jefferson County Public Schools to reroute buses that use Ky. 22, or Brownsboro Road, to and from Ballard High School, Kammerer Middle School, Norton Elementary and Norton Commons Elementary, said Mike Raisor, the school district’s chief operations officer.

Raisor said one family whose bus stop is affected is being notified, and other buses will use alternate routes. Despite the changes, he said those buses are expected to pick up students no later than 15 minutes later than scheduled during Wednesday’s start of the 2016-17 school year.

JCPS officials spent the summer finding new routes for buses that can no longer cross two other bridges with new weight limits. Those include a section of Pendleton Road over Pond Creek in southwestern Louisville and River Road over Goose Creek in eastern Louisville.

Weight limits to those bridges were added in June, according to the Transportation Cabinet.

One family was inconvenienced by the Pendleton Road closure, while about 80 buses are being detoured because of the River Road weight limit, Raisor said.

Louisville metro government owns those spans. A city spokeswoman wasn’t able to immediately provide details on possible replacement and repair plans for the bridges.

Copyright 2016 WDRB News. All rights reserved.