More Than $800 Million of Road and Drainage Work Is Rebuilding Northwest Austin Through 2029
Northwest Austin has spent the last two years living inside a construction zone, and most people experience that as orange cones on the drive to work rather than as a story about the area. It is worth stepping back, because when you add up what is currently funded and under construction between MoPac, US 183, Loop 360, and Burnet Road, you are looking at more than $800 million of road and drainage work, and almost none of it is speculative. It is contracted, it is dated, and a good portion of it opens this year.
That matters if you own here, and it matters even more if you are shopping here, because the construction window and the finished road are two completely different things to live next to.
183 North is in its final stretch
The 183 North Mobility Project is a $612 million rebuild of nine miles of US 183 between State Highway 45 North and MoPac, and it is the single largest piece of what is happening in Northwest Austin. The finished corridor carries two tolled express lanes in each direction plus an additional non-tolled general purpose lane, which brings the free lanes to four in each direction, along with new sidewalks, shared-use path connections, and cross-street connections that did not exist before.
The northbound express lanes opened to traffic in early January of this year, and the southbound express lanes plus the flyover direct connector to the MoPac express lanes opened on February 28. What is left is finishing work, which means concrete grinding, frontage road paving, sound walls, sidewalk connections, and landscaping, and the project is expected to reach full completion this year. It was funded through a combination of federal money, toll revenue bonds, and a federal TIFIA loan.
One detail people miss until they use the lanes: the express lane tolls are dynamic, and the price is recalculated roughly every five minutes based on how full the lanes are, with the goal of keeping traffic in them moving at a minimum of 45 miles per hour. That is a different product than a flat toll road, and it means the number on the sign in rush hour is not the number you will see at 10 in the morning.
Spicewood Springs Road goes from two lanes to four this year
The Spicewood Springs Road Regional Mobility Project covers the stretch between Loop 360 and Mesa Drive, and it widens a two-lane road into a four-lane facility with a center median and left-turn bays. The part that gets less attention is everything happening below the surface, because the same project installs new storm sewer, builds water quality and detention ponds, and replaces and upgrades water and wastewater lines under a road that was carrying far more traffic than it was built for.
Austin City Council approved a $34.18 million construction contract in September 2023, split between roughly $24.13 million from transportation and public works and $10.1 million from Austin Water's capital budget, and the work is funded out of the 2016 Mobility Bond. Traffic has been shifted onto the new western right-of-way while the eastern half gets built, and completion is expected in late 2026.
The Loop 360 work at Courtyard and 2222 is just getting started
This is the one people need to plan around, because it is the newest and the longest. TxDOT broke ground in April on a $68.4 million project at Loop 360, Courtyard Drive, and RM 2222, and construction runs through late 2029.
The project takes the traffic signal off the Loop 360 main lanes at Courtyard Drive and replaces it with a grade-separated crossing, and it rebuilds the RM 2222 intersection as a diverging diamond interchange, which is the design where opposing traffic briefly crosses to the other side so left turns never have to wait for a signal cycle against oncoming traffic. It also adds shared-use paths and sidewalks through an area that has effectively had none. It is being delivered in four phases, starting with work zone setup, waterline construction, and cliff excavation, then connector roads, drainage, braided ramps, and the Courtyard Drive bridge, then the diverging diamond itself, and finally paving and permanent striping.
Access is already changing. The eastbound RM 2222 entrance ramp to southbound Loop 360 is closing permanently, and that traffic will move to the RM 2222 signal instead. If you are looking at homes off 2222 or off Courtyard, that is a three-year construction reality you should price in rather than discover after closing.
The drainage work is the part that shows up on your insurance
Road projects get the headlines, but the flood risk work is the piece with the most direct effect on what a property costs to own. The January Drive Flood Risk Reduction Project finished on April 3 of this year, and for $1.93 million the city installed more than 1,700 feet of new and upsized storm drain pipe, rebuilt the outfall, added erosion control, and cleared invasives for a creek Grow Zone. More than 70 properties benefited from the reduced flood risk, and that came on top of earlier buyouts of homes along the creek.
Two more are in progress. The Little Walnut Creek Flood Risk Reduction Project is a $28.8 million effort that diverts floodwater into underground culverts, installs 72-inch storm pipe along Mearns Meadow Boulevard, expands detention at Quail Creek Park, and replaces water and wastewater lines, with completion expected late this year. The Oak Knoll project is a $9 million storm drain and detention expansion running into 2027.
If a home you are considering sits near one of these, ask specifically whether the current floodplain map reflects the completed project or the conditions before it, because those maps do not update the moment the ribbon is cut.
Burnet Road is a five-year corridor rebuild, not a repaving
The Burnet Road Mobility Program is $64 million across three remaining segments running from Koenig Lane north past Rutland Drive, funded out of the same 2016 Mobility Bond. Segment C2 started in February and runs to July 2027 at $12 million, segment C4 started in March and runs to October 2027 at $23 million, and segment C3 starts in June and runs to December 2028 at $29 million. The scope is signals, eight-foot shared-use paths, accessible bus stops, drainage, driveway reconstruction, and landscaping, and the city's data on the already-completed Koenig to White Horse Trail segment shows crash reduction after construction wrapped in 2023.
What this actually means if you are buying
The practical takeaway is that in Northwest Austin right now, two houses on similar streets can have very different five-year experiences depending on which project they sit next to. A home near the 183 corridor is on the far side of the disruption, since that project is finishing this year and the access improvements are already in place. A home off 2222 near Courtyard is on the near side, with three more years of active construction ahead of it, and that is a real quality-of-life factor that does not always show up in the price.
When you tour a house here, it is worth asking three questions. Which funded projects are within a mile, what are their completion dates, and is the current access pattern the permanent one or a temporary detour. Those are answerable questions, and the answers change how a house feels to live in.
What this means if you are selling
If your home is near a project that is finished or finishing, that is a selling point and it deserves to be in the listing description rather than left for a buyer to figure out. Direct express lane access, a new shared-use path, or a drainage project that removed a recurring water problem are all concrete improvements that a buyer relocating from out of state has no way to know about. If your home is near a project that is just starting, the honest move is to get ahead of it, because buyers will find the TxDOT schedule and they will trust you more if you brought it up first.
Frequently asked questions
When will the 183 North Mobility Project be finished?
Full completion is expected in 2026. The northbound express lanes opened in January and the southbound express lanes and MoPac direct connector opened February 28, so what remains is finishing work including concrete grinding, frontage road paving, sound walls, sidewalks, and landscaping.
How much do the 183 North express lanes cost to use?
There is no fixed rate. Pricing is dynamic and adjusts about every five minutes based on demand, with the system targeting a minimum speed of 45 miles per hour in the express lanes. Rates rise during peak periods and fall as congestion clears.
How long will the Loop 360 construction at RM 2222 last?
Construction began in April 2026 and is expected to continue through late 2029, across four phases. The eastbound RM 2222 entrance ramp to southbound Loop 360 is closing permanently as part of the work.
When does Spicewood Springs Road open as four lanes?
Completion is expected in late 2026 for the segment between Loop 360 and Mesa Drive, which includes the widening, the center median, storm sewer, detention ponds, shared-use paths, and water and wastewater upgrades.
Does completed flood control work change my flood insurance?
It can, but not automatically. Floodplain maps are updated on their own schedule, and a property can remain mapped in a floodplain after the project that reduced its risk is complete. If a home you are considering is near the January Drive, Little Walnut Creek, or Oak Knoll projects, verify the current map status and get an insurance quote during your option period rather than assuming.
Talk it through before you commit
Northwest Austin is a mature part of the city that is being retrofitted for the traffic it already carries, and that is a good sign for long-term values, but the timing is uneven street by street. If you want to know which side of the construction window a specific address sits on, that is a fast conversation and a useful one. Reach out and I will walk you through it.
