No endangered spiders found in MoPac cave, project resumes

Mopac Improvement Project
Work continues on the MoPac Improvement Project. (Amanda Dugan/KXAN)

AUSTIN (KXAN) — The MoPac improvement project will move forward after officials determined there are no endangered species posing a threat to construction.

The project was initially delayed after the construction crew found a small cave they thought could potentially house an endangered spider species. A fissure or crack in a rock on the southbound side of MoPac near Enfield Road was found Oct. 28 putting a hold on the project.

Work stopped for 27 days while the crew waited to see what creatures called the cave home.

Apparently it is not uncommon for major construction efforts to turn up caves housing endangered species. An endangered spider halted a similar project in San Antonio in 2012.

It is unclear what the new timeline is for the construction of the North MoPac toll lanes. provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Users who violate these terms, including use of vulgar language or racial slurs, will be banned. If you see an inappropriate comment, please flag it for our moderators to review.

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