Austin, November 26, 2025
The U.S. 183/MoPac construction project in Austin aims to ease congestion and improve travel reliability, with significant advancements already noted. Scheduled for completion in 2026, the $612 million initiative includes new express toll lanes, additional general-purpose lanes, direct connectors, and improved pedestrian and bicycle facilities. Commuters should expect lane closures and traffic pattern changes during the construction period.
Austin, Texas: U.S. 183/MoPac Construction to Conclude in 2026
The U.S. 183/MoPac construction project in Austin is scheduled for completion in 2026, aiming to alleviate congestion and enhance travel reliability for commuters.
Project Overview
The 183 North Mobility Project, initiated in early 2022, is a $612 million initiative designed to improve mobility along a 9-mile stretch of U.S. 183 between State Highway 45 North and Loop 1 (MoPac). The project includes:
- Two express toll lanes in each direction.
- An additional general-purpose lane, increasing the total to four non-tolled lanes in each direction.
- Direct connectors to and from southbound MoPac.
- Enhanced pedestrian and bicycle facilities.
Construction is progressing with substantial advancements in bridge structures, main lane paving, overhead sign structures, and toll gantries. The project is on track to open to traffic in 2026.
Current Traffic Impacts
Commuters should anticipate ongoing lane closures and traffic pattern changes throughout the construction period. Notably, the southbound MoPac frontage road approaching Spicewood Springs has experienced temporary full closures for waterline repairs, with closures expected to remain in place through the weekend and possibly into next week.
Background
U.S. 183 is a critical corridor in Austin, serving as a major route for daily commuters. The 183 North Mobility Project aims to address the area’s congestion issues which, without intervention, were projected to reduce peak rush hour traffic speeds to 10 mph by 2035.
For the most current information on lane closures and project updates, commuters are encouraged to visit the official project website.
Frequently Asked Questions (FAQ)
When is the U.S. 183/MoPac construction project expected to be completed?
The construction project is scheduled for completion in 2026.
What improvements are being made as part of the 183 North Mobility Project?
The project includes adding two express toll lanes in each direction, an additional general-purpose lane, direct connectors to and from southbound MoPac, and enhanced pedestrian and bicycle facilities.
Are there any current traffic impacts due to the construction?
Yes, commuters should anticipate ongoing lane closures and traffic pattern changes throughout the construction period. Notably, the southbound MoPac frontage road approaching Spicewood Springs has experienced temporary full closures for waterline repairs, with closures expected to remain in place through the weekend and possibly into next week.
Why is the 183 North Mobility Project necessary?
U.S. 183 is a critical corridor in Austin, serving as a major route for daily commuters. The project aims to address the area’s congestion issues which, without intervention, were projected to reduce peak rush hour traffic speeds to 10 mph by 2035.
Key Features of the 183 North Mobility Project
| Feature | Description |
|---|---|
| Express Toll Lanes | Two lanes in each direction to improve traffic flow. |
| General-Purpose Lanes | An additional lane in each direction, totaling four non-tolled lanes. |
| Direct Connectors | Connections to and from southbound MoPac for seamless travel. |
| Pedestrian and Bicycle Facilities | Enhanced sidewalks and shared-use paths for non-motorized users. |
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