Quick Answer
- TxDOT project CSJ 0081-03-047 will reconstruct and widen roughly 6.13 miles of US 377 from about 2,100 feet south of FM 1171 in Flower Mound to about 2,900 feet north of Crawford Road in Argyle, converting the two-lane rural highway to a four-lane divided highway with a raised median, left-turn lanes and sidewalks.
- Denton County's September 1, 2026 report states the US 377 Argyle section (CSJ 0081-03-047) was awarded to Webber, LLC with a low bid of $111,363,901, an anticipated October 2026 start, 876 working days, and 36 months of barricades. An earlier pre-bid estimate of about $84 million for the Argyle portion came from local reporting in late 2025 and is not the awarded construction cost.
- The County's anticipated October 2026 start is a projected start month, not a confirmed start day. As of October 14, 2026, an exact start day and a lane-closure or detour plan were not found in the official records checked for this article, and the Town of Argyle's construction page describes ongoing TxDOT-managed utility relocation rather than roadway construction.
- Argyle entered an advance funding agreement of $811,275 with TxDOT for median and landscaping improvements ahead of construction, and utility relocation along the corridor is underway. Confirm the current phase directly with TxDOT and the Town of Argyle.
- US 377 is Argyle's main north-south corridor and carries school traffic to the campus Argyle ISD plans to open as Argyle Legacy High School in the 2027-2028 school year, initially serving East Zone grades 9-10 alongside grades 6-8. Verify attendance assignments by address with Argyle ISD, and plan for changed traffic patterns during the multi-year reconstruction.
Theresa De La Rosa's Broker Perspective
I'm Theresa De La Rosa, Broker of Covenant Heritage Realty in Northlake. US 377 is the spine of Argyle: it is how residents reach Flower Mound, how families reach the school campuses on the corridor, and how shoppers reach the businesses along it. A roughly three-year reconstruction changes daily life for anyone who lives east or west of that road, and it changes the commute conversation for buyers choosing between Argyle and Northlake. My advice is the same as it is for every road project in this corridor: verify the current phase with TxDOT and the town, plan for the road as it will be during construction, and never make a purchase decision on a projected completion date.
What the US 377 Project Actually Includes
The project is TxDOT's CSJ 0081-03-047, a reconstruction and widening of US 377 in Denton County. According to TxDOT's public hearing materials, the project covers approximately 6.13 miles from about 2,100 feet south of FM 1171 in Flower Mound to about 2,900 feet north of Crawford Road in Argyle. The work converts the existing two-lane rural highway into a four-lane divided highway with a raised median, left-turn lanes and sidewalks, with the corridor designed to handle the traffic the area's growth has brought to the road.
The project is a reconstruction, not just a repave: it involves rebuilding the roadway profile, adding the divided configuration, and installing the median and turn-lane improvements that make the four-lane design work. Right-of-way acquisition has been part of the process, including at least one reported eminent-domain case along the corridor in 2025, and TxDOT-managed utility relocation along the corridor is underway per the Town of Argyle's construction page.
The Timeline: What Is Verified and What Is Not
Denton County's September 1, 2026 report states that the US 377 Argyle Section (CSJ 0081-03-047) was awarded to Webber, LLC with a low bid of $111,363,901, with an anticipated October 2026 start, 876 working days, and 36 months of barricades. That report is the most recent official schedule statement reviewed for this article.
The County's anticipated October 2026 start is a projected start month, not a confirmed start day. As of October 14, 2026, the official records checked for this article did not include an exact start day or a published lane-closure and detour plan for the Argyle section, so this article does not state that roadway construction has begun. The Town of Argyle's construction page describes ongoing TxDOT-managed utility relocation along the corridor, which precedes roadway construction.
Earlier figures from local reporting are still useful as context, but they are pre-award estimates: the roughly $84 million estimate for the Argyle portion came from Community Impact reporting in late 2025, before the bid, and the roughly 39-month reconstruction duration from the same coverage differs from the County's 876 working days and 36 months of barricades. The $111,363,901 low bid listed in the County's report is the awarded construction cost, not the earlier $84 million estimate.
The distinction matters: a project that has been awarded, a project under construction, and a project with an active lane-closure plan are three different situations, and only the last one tells you what the road will look like on a given day. Confirm the current phase directly with TxDOT and the Town of Argyle before planning around it.
Why This Corridor Matters to Argyle
US 377 is the main north-south route through Argyle, connecting the town to Flower Mound to the south and to Denton County communities to the north. It is also a school corridor: the Argyle Middle School campus sits on US 377, and Argyle ISD plans to open that campus as Argyle Legacy High School in the 2027-2028 school year, initially serving East Zone grades 9-10 alongside grades 6-8. Families in the eastern attendance zone, the area east of US 377, will keep routing school traffic to that campus through the construction period. Attendance assignments are determined by address, so verify the current zone for any specific property with Argyle ISD. The district's attendance zone details are covered in the Argyle ISD attendance zones article.
The corridor also carries the commercial life of the town: the businesses along US 377, including the new Argyle Marketplace development north of FM 407, depend on access from the highway. A multi-year reconstruction typically means periods of narrowed lanes, shifted access points and changed turning patterns, which affects both residents and the businesses that serve them.
What It Means for Buyers and Sellers
For buyers, the practical question is how the road will function during construction, not just after it: commute times along US 377 may be longer and less predictable for a stretch of about three years, and the same is true for the FM 407 and I-35W connections that Argyle residents rely on. The FM 407 Micro Breakout at I-35W is already operational and the larger I-35W frontage road projects remain in planning, so the corridor's traffic picture is a mix of completed, active and future work.
For sellers, the honest framing is that a completed four-lane US 377 is a long-term improvement to the town's main corridor, but the construction period itself is a near-term inconvenience that buyers will weigh. Position a listing with accurate, current commute information and be ready to answer questions about the project's phase. The Argyle relocation guide covers the town's schools, communities and commute context in more depth.
Frequently Asked Questions
Is US 377 being widened through Argyle?
Yes. TxDOT project CSJ 0081-03-047 will reconstruct and widen about 6.13 miles of US 377 from south of FM 1171 in Flower Mound to north of Crawford Road in Argyle, converting the two-lane rural highway into a four-lane divided highway with a raised median, left-turn lanes and sidewalks. Denton County's September 1, 2026 report lists the Argyle section as awarded to Webber, LLC with a low bid of $111,363,901; an earlier pre-bid estimate of about $84 million from local reporting is not the awarded construction cost.
When does US 377 construction start in Argyle?
Denton County's September 1, 2026 report anticipates an October 2026 start for the Argyle section. That is a projected start month, not a confirmed start day: as of October 14, 2026, the official records checked for this article did not include an exact start day or a published lane-closure plan, and the Town of Argyle describes ongoing TxDOT-managed utility relocation rather than roadway construction. Confirm the current phase with TxDOT and the Town of Argyle.
How long will US 377 construction last?
Denton County's September 1, 2026 report lists 876 working days and 36 months of barricades for the Argyle section, roughly three years of construction-period traffic. An earlier estimate of about 39 months came from local reporting before the award. Road-project schedules frequently shift, so verify the current timeline with TxDOT.
Will US 377 construction affect school routes in Argyle?
Potentially. The Argyle Middle School campus sits on US 377, and Argyle ISD plans to open it as Argyle Legacy High School in the 2027-2028 school year, initially serving East Zone grades 9-10 alongside grades 6-8. Families in the eastern attendance zone route school traffic to that campus. Check current road conditions and school communications during the construction period, and confirm attendance assignments by address with Argyle ISD.
Should I wait to buy until US 377 construction is finished?
That depends on your timeline and tolerance for construction-period traffic. A completed four-lane corridor is a long-term improvement, but the roughly three-year construction window is a near-term consideration. Evaluate the road as it will function during construction, verify the project's current phase, and weigh it against schools, taxes, community fit and financing rather than banking on a projected completion date.
Conclusion
The US 377 reconstruction through Argyle is a verified, funded project with a clear scope: roughly 6.13 miles rebuilt into a four-lane divided highway, an $811,275 advance funding agreement for median improvements, and utility relocation underway. Denton County's September 1, 2026 report lists the Argyle section as awarded to Webber, LLC with a low bid of $111,363,901, an anticipated October 2026 start, 876 working days, and 36 months of barricades; the earlier $84 million estimate and roughly 39-month duration from local reporting are pre-award figures, not the current awarded cost. What is not yet verified is an exact start day and the lane-closure plan, which were not found in the official records checked as of October 14, 2026.
For anyone living in, moving to, or selling in Argyle, the practical takeaway is to treat the corridor as a road about to be under construction for roughly three years, to verify the current phase with TxDOT and the town, and to weigh the long-term improvement against the near-term disruption. Compare the full picture of the town in the Argyle relocation guide or reach out through the contact page to talk through how the project affects a specific property or commute.
Theresa De La Rosa, Broker, REALTOR®
Covenant Heritage Realty, LLC | In DFW Living Group
Texas Real Estate Broker, License #807294, with more than 18 years of real estate experience. Theresa serves sellers, buyers and relocating households throughout Argyle, Northlake, Justin, Denton, Flower Mound and the surrounding Denton County communities. Equal Housing Opportunity.
Sources
- Denton County, September 1, 2026 report on the US 377 Argyle Section (CSJ 0081-03-047): awarded to Webber, LLC, low bid $111,363,901, anticipated October 2026 start, 876 working days, 36 months of barricades: dentoncounty.gov. Accessed October 14, 2026.
- TxDOT, Public Hearing, US 377 from South of FM 1171 to North of Crawford Road in Denton County (project scope, CSJ 0081-03-047, four-lane divided configuration): txdot.gov. Accessed October 14, 2026.
- Community Impact, Argyle Council commits $811,275 agreement for US 377 median improvements (December 16, 2025; earlier pre-bid estimate of about $84 million for the Argyle portion): communityimpact.com. Accessed October 14, 2026.
- Community Impact, Argyle Town Council discusses median improvements ahead of US 377 construction (November 21, 2025): communityimpact.com. Accessed October 14, 2026.
- Town of Argyle, Special Construction Announcement, US 377 Relocation of Non-Town Utilities (TxDOT-managed utility relocation underway): argyletx.com. Accessed October 14, 2026.
- Argyle ISD, Argyle ISD finalizes land purchase (Argyle Legacy High School planning): argyleisd.com. Accessed October 14, 2026.
- WFAA, Argyle business owner loses shop to eminent domain to accommodate US 377 expansion project (June 27, 2025; right-of-way acquisition): wfaa.com. Accessed October 14, 2026.
- TxDOT, Denton County Design Projects (project list): txdot.gov (PDF). Accessed October 14, 2026.
Editorial verification note. Sources reviewed October 14, 2026. Project scope (approximately 6.13 miles, CSJ 0081-03-047, four-lane divided configuration with raised median, left-turn lanes and sidewalks) is from TxDOT's public hearing materials. Denton County's September 1, 2026 report states the US 377 Argyle Section was awarded to Webber, LLC with a low bid of $111,363,901, an anticipated October 2026 start, 876 working days, and 36 months of barricades. The $84 million estimate for the Argyle portion, the spring 2026 bid timing, the anticipated September 2026 construction start, and the roughly 39-month reconstruction duration are earlier figures from Community Impact reporting (November and December 2025) and are not the awarded construction cost or current schedule; the $811,275 advance funding agreement is also from Community Impact reporting. As of October 14, 2026, the official records checked for this article did not include an exact construction start day or a published lane-closure and detour plan for the Argyle section, so this article does not state that roadway construction has begun; the Town of Argyle describes ongoing TxDOT-managed utility relocation along the corridor. This article is general educational information, not legal or engineering advice; verify current project status, closures and schedules with TxDOT and the Town of Argyle.