Officials announced lane closures planned for Thursday and Friday on Loop 1, or MoPac, to make up for lost time due to rainy weather.

The closure will be on the left lane of northbound MoPac between 35th Street and RM 2222 (Northland Drive) from 9 a.m. until 3 p.m. on Thursday, Sept. 28, and Friday, Sept. 29.

The closure will allow workers to can install delineators posts and final striping for the new Express Lane. Officials said the goal of the closures is to open the new northbound MoPac Express Lane between Cesar Chavez Street and RM 2222 by Saturday, Sept. 30, or as soon as possible.

The closures will be dependent on suitable weather conditions, officials said.