Beginning Feb. 10, the Central Texas Regional Mobility Authority will be closing the second southbound exit for Steck Avenue on MoPac as crews make progress on the 183 North Mobility Project. The closure is expected to last up to three months.

What you need to know

Detour routes and alternate exits will be made available, with on-road signage present to guide drivers, according to the Mobility Authority.There are still other ongoing lane closures occurring as a part of this project. Upcoming temporary lane closures can be found on the 183 North Mobility Project website or by following the project via X, @183North.

Some context

The total project includes a nine-mile stretch of US 183 between SH 45 North and MoPac, by which the Mobility Authority is working to construct one additional express lane in each direction as well as another general use lane.

Those who regularly drive near the Arboretum have likely noticed the towering new supports rising for US 183 express lanes, set to directly connect with the MoPac Express Lanes.

Other multimodal improvements are also outlined in project plans, such as new shared-use paths, sidewalks and cross-street connections for pedestrians and bicyclists.

When completed, commuters looking to bypass traffic congestion have a choice to use the 183 North Express Lanes, while drivers who prefer not to pay a toll will still have the option to use the improved non-tolled general-purpose lanes.

The $612 million project completion remains on track for 2026, according to Mobility Authority officials.

The agency opened the fourth non-tolled lane to traffic back in August ahead of schedule.

Quote of note

“Keeping Central Texans moving, even in the midst of a large construction project, is a priority for the Mobility Authority, and drivers should be experiencing a better commute along U.S. 183 as a result,” Executive Director Mobility Authority, James Bass said in a statement.