The City of Austin has committed money for what goes under the parks planned over I-35. It has not found money for the parks. Council committed $104 million for the foundations, financed with a $63 million state infrastructure loan and $41 million in local debt. The decks above them, plus everything people picture when they hear "park over the highway," are still unfunded. Those decks also have a deadline. According to the city, the window for adding them during highway construction runs from 2030 to 2032. If it closes, the next opening is 2043 or later.
That changes how a block on East Austin's west edge should be read. The construction years are close to certain. The park is an option, and it expires.
What the $104 million covers, cap by cap
TxDOT's Capital Express Central project, a more than $4 billion rebuild, is lowering I-35 through central Austin. According to KUT, the mainlanes will sit up to 60 feet below ground level from Holly Street to Airport Boulevard, which is what makes decks over the highway possible at all. The city's finished plan calls for three downtown caps totaling nearly 11 acres between Cesar Chavez and 12th streets, plus two smaller "stitches" at 41st Street and the Capital Metro Red Line.
The three caps that face East Austin, by size and by what has actually been committed:
| Cap location | Size | Foundations funded? | Deck and amenities funded? |
|---|---|---|---|
| Cesar Chavez to 4th Street | 5.37 acres | Yes, in the $104M package | No |
| 4th to 7th Street | 3.28 acres | Yes, in the $104M package | No |
| 11th to 12th Street | 2.17 acres | Yes, in the $104M package | No |
The city's Our Future 35 page describes the $104 million as an agreement with TxDOT for roadway elements at those three locations and at the two northern stitches. In practice, that means columns and structural provisions built into the new highway so a deck can sit on top later. According to Community Impact's June 2026 report, contracts for that foundation work could go out for bid as early as fall 2028, with construction soon after.
Why 2032 matters more than the price tag
If the decks aren't built by the time the expansion wraps up, TxDOT won't allow new projects on the corridor for a decade, which pushes any deck into the 2040s. Brad Cesak, a spokesperson for Austin Transportation and Public Works, laid out the two paths in an email to Community Impact:
"At this time, the City is seeking external partners to develop cap decks and negotiate air rights agreements either through change orders, which can occur between 2030-2032, or release separate letting for cap construction after the completion of the CapEx project (2043 or later)."
TxDOT Austin District Engineer Tucker Ferguson described the agency's position to council on May 26. "I-35 construction is going to be disruptive," he said. "We don't want to finish that up, get the benefit of the new highway system and how it's operating, and then go right back into construction."
So the question for any address near the caps is whether more than $600 million in deck financing can be found in roughly six years. Possible sources named so far include the city budget, voter-approved bonds, and outside partners such as private businesses or philanthropists. The Downtown Austin Alliance has said the Cesar Chavez to 4th Street cap is its priority. It reports early talks with the city on governance, a financing strategy, and philanthropic outreach.
The estimate keeps moving, and the first funding source is already gone
The first pillar of financing fell away in 2025. A $105 million federal Neighborhood Access and Equity grant meant for the Cesar Chavez to 4th Street cap was rescinded. KUT reported in May 2026 that the cancellation took away the project's planned federal seed money.
Two sets of cost estimates are in circulation, and they shouldn't be blended:
- March 2026, from KUT's reporting on a council work session: $346 million for bare caps with the required safety equipment, $258 million for amenities, $604 million in total, not counting operations and maintenance. City staff called the figures highly uncertain because the designs aren't finished.
- June 2026, from Community Impact: about $400 million for all caps and stitches, nearly $260 million for amenities, and about $9 million a year for maintenance once built.
The one location with a detailed design review shows how much the numbers can move. At the city's request, TxDOT refined the estimate for the 11th to 12th Street cap in January. It rose 62%, to $86 million. Part of the reason was that the original design didn't allow for two-story buildings. City staff and TxDOT both said the jump shouldn't be read as a sign of what will happen at the other caps. As of KUT's March report, the city hadn't yet paid TxDOT the $25 million needed for full cap design. Without that design, most of the estimates are still soft.
There was also a push this spring to shrink the plan. Mayor Kirk Watson proposed a smaller Cesar Chavez to 4th Street cap and only future-proofing at 11th to 12th. That item was withdrawn from council's May 28 agenda, and the city kept the larger 2025 plan. As of June, the city still had to finalize its agreement with TxDOT for the support elements. This post treats that commitment as proceeding, not as signed.
The construction calendar is the part with firm dates
While the deck financing is unsettled, the construction schedule is detailed. This is the order of events for the stretch facing East Austin, drawn from TxDOT's phasing schedule last updated September 2, 2026 and its Lady Bird Lake segment page:
- Through late 2026: East Avenue beneath the I-35 lake bridge stays closed.
- January and February 2027: Downtown advance construction goes out to bid and is awarded.
- 2027 through 2033: Downtown advance construction runs. TxDOT's scope includes rebuilding the east-west crossings at Cesar Chavez, 4th, 5th, 6th, 7th, 11th, 12th, and 15th streets.
- 2027 through 2031: Austin Water utility relocation in city right-of-way.
- Through 2029: Northbound frontage road access just north of Riverside stays closed, and the southbound frontage road stays shifted.
- Fall 2028 at the earliest: Contracts for the cap foundations could go out for bid.
- 2030 through 2032: The change-order window for adding decks during construction.
- 2033: Anticipated completion of the Downtown segment.
In July, KXAN reported that TxDOT expected bridge and frontage road impacts to start around mid-2027 and continue to 2033. TxDOT hasn't published closure dates street by street for those crossings. The MLK Boulevard bridge gives a sense of what a bridge rebuild looks like. While the bridge's south side was being rebuilt, TxDOT kept two eastbound lanes, two westbound lanes, and a pedestrian sidewalk open. KXAN reported the final traffic configuration was expected in early August 2026.
How to read a block near the caps
Put the calendar and the funding picture together and an address near Cesar Chavez, 4th through 7th, or 11th and 12th carries two separate things. One is six or more years of scheduled bridge, frontage, and utility work on the cross streets that connect it to downtown, which is nearly certain. The other is a park whose foundation is funded and whose deck depends on money that has to be found by 2032. A seller describing the caps as coming soon and a buyer discounting the construction years are pricing the same block on two different timelines.
The broader market leaves room to work that out. In August 2026, according to Unlock MLS figures compiled by KXAN, the Austin metro had 5.1 months of inventory, and homes averaged 66 days on market. The median sale price that month was $560,000 in the City of Austin and $412,000 across the metro, down 6.4% from a year earlier. Those are city and metro figures, not East Austin numbers. Still, a market with that much inventory gives buyers time to ask about the construction years before they sign.
The questions that separate the two timelines for a specific property:
- Which rebuilt crossing does the block depend on to reach downtown, and does that crossing fall inside the 2027 to 2033 Downtown phase?
- Is the nearest cap Cesar Chavez to 4th, which the Downtown Austin Alliance has named its priority, or 11th to 12th, the one whose estimate has already jumped and was proposed for future-proofing only?
- How long is the planned hold, and does it reach past 2033, when construction ends, or past 2043, the earliest date for a deck added after construction?
FAQ
Is any I-35 cap next to East Austin funded? The foundations are, through the $104 million commitment. None of the decks or amenities are funded.
What happens if the money isn't found by 2032? Per the city, a deck could still be bid separately after the project is complete, in 2043 or later.
Where are official updates posted? The city posts cap and stitch updates on its Our Future 35 page. TxDOT's Capital Express Central page covers segment schedules and closures.
Working out what the 2027 to 2033 construction calendar means for a specific address near Cesar Chavez, 4th through 7th, or 12th Street takes block-by-block knowledge of East Austin's west edge. The Davis Agency tracks the cap funding and the construction schedule for our buyers, sellers, and development clients. Get your home valuation & consultation, and we'll go through both with you for your property.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
