How long will the road construction in St. George last?

The road construction in St. George lasts through winter 2028, for the two projects that touch most people’s daily driving. UDOT’s I-15 widening through central St. George and the SR-18 / Bluff Street rebuild both carry an expected finish of winter 2028, which means a buyer closing this autumn should plan on roughly two years of orange barrels.

That is the honest answer, and it is longer than most people hope when they ask. Below is what each project is, who it affects, and how I would weigh it if you are deciding where in St. George to buy.

Some of it is tied to long-horizon projects rather than repairs. What is being built at Tech Ridge in St. George covers the twenty-year build-out on the mesa.

The three projects, side by side

Project	What it is	Cost	Timeline	Source
I-15 widening	Two lanes to three between Bluff Street (Exit 6) and St. George Boulevard (Exit 8), plus two new underpasses for local connectivity	Approximately $175 million	Began summer 2026, expected finish winter 2028	UDOT
SR-18 / Bluff Street	Resurfacing, drainage repair and new drains, new medians to reduce conflict points, St. George Boulevard to Main Street	Approximately $38.3 million	Began May 2026, expected finish winter 2028	UDOT
Northern Corridor Highway	Four-lane highway connecting Washington Parkway to Red Hills Parkway, intended as an alternative route around congested city streets	Not stated here	BLM issued the right-of-way in January 2026; early construction stages began during 2026	BLM, UDOT

All three figures and dates are as published by UDOT and the Bureau of Land Management and were checked on August 27, 2026. Projects slip. Treat “winter 2028” as the current plan rather than a promise.

How long the mess actually lasts

The two central projects overlap almost completely. Bluff Street started in May 2026, I-15 followed in summer 2026, and both are expected to finish in the same season two years later. There is no window in that stretch where one is done and the other has not started.

What that feels like on the ground, from watching clients drive it this summer:

Lane shifts more than closures. Freeway widening is mostly done while the road stays open. You lose shoulder, you lose a lane at night, and the pattern changes every few weeks. It is disorienting more than it is blocking.

Bluff Street is the more disruptive one for daily errands. A resurfacing and median project on a surface street means intersections change, turn lanes come and go, and the businesses along the corridor are harder to get into for a while. The freeway project mostly affects people passing through; the Bluff Street project affects people trying to stop.

Two years is long enough to matter and short enough to plan around. If you are buying a house you intend to keep for a decade, the construction is a chapter. If you are buying for eighteen months, it is most of your stay.

Will it change my commute?

Yes if your route uses I-15 between Exits 6 and 8, or Bluff Street between the Boulevard and Main. Probably not much otherwise.

Who this touches most:

• Anyone commuting in from Hurricane, La Verkin or Washington City on I-15 who continues past Exit 8 toward the west side of the city. You drive through the widening zone every day. I wrote separately about what the Hurricane-to-St. George commute is like during this window.
• People living on the west side — Green Valley, Dixie Downs, Sunbrook and the neighborhoods that use Bluff Street to reach the Boulevard, the hospital side of town, or the freeway.
• Anyone whose regular errands are along Bluff Street itself. That corridor has a lot of the retail people use weekly.

Who it mostly does not touch:

• Little Valley, Washington Fields and the southeast. Those areas mostly reach I-15 at the southern exits or by way of the Southern Parkway and River Road, and stay out of the central stretch. The central construction is something they read about.
• Ivins and Santa Clara residents who work on the west side and rarely cross to the Boulevard.
• Retirees whose driving is local. If your week is groceries, golf and a Sunday drive, you will notice the construction less than a commuter will.

St. George traffic is easy by metro standards and busier than it was. Construction adds a temporary layer on top of that. It does not turn St. George into a city with a real commute problem, and it would be dishonest to suggest it does.

Will it affect my home’s value?

I am not going to predict values from a road project, and I would be careful with anyone who does. What I can tell you is how buyers behave, because I watch them.

During construction, buyers discount proximity to the work. A house that backs onto the freeway corridor or sits on a Bluff Street cross-street is harder to show well right now. Noise, dust and access are all worse than they will be. Some sellers wait it out; some price for it.

After construction, the freeway is wider and closer to some houses than before. A third lane in each direction is more pavement. If you are looking at a home near the I-15 corridor, ask specifically what the finished cross-section looks like at that point and whether the plans include any sound mitigation. Do not assume, and do not take the answer from a listing.

The two new underpasses change local connectivity. UDOT’s stated purpose for them is local connectivity across the freeway. Which neighborhoods gain a shorter route is something to ask about for the specific address, because it could matter more to daily life than the extra lane does.

Beyond that, the honest position is that St. George home values are driven by supply, growth and who is moving here, not by a single project. A road is one input among many.

The Northern Corridor is a different kind of question

The Northern Corridor Highway is not a construction-timeline question so much as a local-politics question, and you should know that before you form an opinion.

The plan is a four-lane highway connecting Washington Parkway to Red Hills Parkway, intended as an alternative route around congested city streets. The Bureau of Land Management issued the right-of-way in January 2026, and early construction stages began during 2026.

It crosses land within the Red Cliffs area and has drawn sustained opposition on conservation grounds. That opposition is real and ongoing; it is not a fringe position, and people in St. George hold strong views on both sides. I am not going to take a side here. What I will say is that if a listing agent describes the Northern Corridor to you as settled good news for the north side of town, they are leaving out the part everyone local knows.

For a buyer, the practical takeaway is narrow: if you are looking on the north side near Red Hills Parkway or Washington Parkway, understand that a highway is planned there, that the timeline is less firm than the two central projects, and that the outcome could still be shaped by litigation or policy. Price that uncertainty however you see fit.

How I would use this if I were buying now

Drive your route during the construction, not before it. If your commute would use the freeway or Bluff Street, drive it on a weekday morning this month. That is the real condition for the next two years. Choose the neighborhood first and the house second, and let this be one of the inputs.

Ask three questions about any house near the corridors. How far is it from the work? What does the finished road look like at this point? Are there plans for sound walls or berms here? You want answers from the plans, not from the seller.

Do not let it stop you from buying in St. George. Every growing city rebuilds its roads, and a city that did not would be the one to worry about. UDOT announced approximately $2.8 billion in new and ongoing construction statewide for 2026 (UDOT, March 2026). St. George is getting its share because it has grown into needing it.

If you are selling near the work, present for it. Show the house at quieter hours, be straightforward about the timeline, and have the UDOT completion dates written down for buyers who ask. A seller who knows the schedule looks like a seller who knows the house.

A fourth project gets confused with these three and should not be: the George Washington Boulevard bridge is a city project on a shorter schedule, not part of the UDOT work above.

One more project sits behind all of this and it is the contested one — what the Northern Corridor Highway is, what has been approved, and why it is disputed.

As a Realtor with Keller Williams South Valley working both Washington County and the south Salt Lake Valley, I spend a fair amount of my week on these roads. If you want a straight read on how the construction touches a specific address you are considering, send it over and I will tell you what I know.

— Kelsey Earl, Realtor, Keller Williams South Valley