The roads Marriott-Slaterville
One highway, two state routes, two approved projects and a boundary down a centreline
12th Street and the two ends of one small city.
State Route 39 crosses Marriott-Slaterville from the Ogden line to the county ground out west, and the traffic on it falls from 36,000 vehicles a day to 8,300 in the space of a few miles. That curve is most of what an address here is buying. Add State Route 126 down the eastern side, two projects worth twenty three and a half million dollars approved by the Utah Transportation Commission in June 2025, and a city line that runs down the middle of the highway itself, and you have the whole road story of this city.
The short answer
Twelfth Street is State Route 39 and it is this city's spine. The transport department's own counts put 36,000 vehicles a day on it where it crosses out of Ogden, 32,000 a mile west of that with the city on both kerbs, and 8,300 further west where the signs start calling it 1200 South. Those counts date from 2017. The other state route here is 1900 West, State Route 126, and Marriott-Slaterville holds roughly the northern third of its Weber County run at about 18,000 vehicles a day. On 27 June 2025 the Utah Transportation Commission approved $21,000,000 to reconstruct and widen State Route 39 from 4700 West to State Route 126, and $2,600,000 at State Route 126 and 250 North. Checked August 2026.
The live question
When does the work on 12th Street start, and how far west does it reach?
The money is approved and the calendar is not. The Utah Transportation Commission, meeting on 27 June 2025, put a reconstruct and widen project on State Route 39 into the state's program with $21,000,000 attached to it, and the limits the Commission recorded are 4700 West to State Route 126. That is the authoritative statement of where the work goes, and it is the one to plan a commute around.
Those limits matter, because the version in wider circulation describes the job as running between the Weber River and 4700 West. That is a different stretch of road. State Route 126 is 1900 West, and 1900 West sits roughly a mile and a half west of where 12th Street crosses the Weber River, so a household near the river reading the wrong limits would expect construction that is not coming to them, and a household out toward 4700 West would not expect the construction that is.
The second project is smaller and closer to home for the west side: $2,600,000 at State Route 126 and 250 North, approved in the same meeting. That is the junction at the top of Slaterville Park's own street, and it is worth reading alongside the construction closure currently sitting on that park.
As for when: no start date is published by the transport department in a form a reader can rely on, and an approved project in a state program is a funded intention rather than a diary entry. The place closures actually show up is the department's own traffic site, and the sensible move is to check that in the week you need it rather than to trust any date you find now. Announced is not built. Checked August 2026.
Twelfth Street
Thirty six thousand vehicles at one end, eight thousand three hundred at the other.
If you learn one thing about this city's geography, learn this. Twelfth Street is State Route 39, it runs the whole width of Marriott-Slaterville, and the traffic on it collapses as you go west. The transport department counts 36,000 vehicles a day at the Ogden line, 32,000 a mile further west with the city on both kerbs, and 8,300 out where the road is signed as 1200 South. Those readings date from 2017, so treat them as nine years old rather than as this morning's traffic; the shape of the curve is the point and the shape has not moved.
That curve is most of what you are buying when you buy an address here. The eastern end of 12th Street is a busy suburban arterial with an industrial neighbour across the road in Ogden. The western end is a two lane road through hay fields where the city eventually gives out into unincorporated Weber County at about 4200 West. Between those two ends is the whole of Marriott-Slaterville, and a parcel's position on that line changes what living there sounds like at seven in the morning more than any other single factor.
It is also the city line for part of its length. On the stretch nearest Ogden, the road's centreline is the boundary itself: Marriott-Slaterville on the north kerb, Ogden on the south. That is why three Weber District secondary programs sitting on the north side of 12th Street are inside this city while a school on the south side of the same road is inside Ogden, and it is a good illustration of why nobody here should reason about jurisdiction from a postal address.
Twelfth Street traffic, east to west
36,000
vehicles a day where State Route 39 crosses the Ogden line, on the transport department's 2017 counts
32,000
a mile further west, with Marriott-Slaterville on both sides of the road
8,300
out west where the road is signed 1200 South, before the city gives out into county ground
18,000
on State Route 126 through this city, against 25,000 in West Haven and 24,000 in Roy
The two approved projects
Twenty three and a half million dollars aimed at two corners of a city of 2,257.
Both items below are recorded in the Utah Transportation Commission's minutes for its meeting of 27 June 2025, where they were approved into the state's current program. The Commission is the issuing body for the limits and the money; nobody has published a start date for either.
| The project | What the Commission recorded | Where it lands |
|---|---|---|
| State Route 39, 4700 West to State Route 126 | Reconstruct and widen, $21,000,000, recorded as a scope and funding addition | The western two thirds of 12th Street through this city, stopping about a mile and a half short of the river crossing |
| State Route 126 and 250 North | New project, $2,600,000 | The junction at the head of Slaterville Park's own street, on the western side of the city |
| State Route 39 railroad overpass | New project, $2,225,000, for environmental study and part of the design | Not this city. The Commission records this one as a grade separation of 12th Street in Ogden, over the railway |
Read in the Transportation Commission's own minutes of 27 June 2025. The third row is here so nobody attaches an Ogden project to this city; the limits are the Commission's and they are explicit about which municipality each one sits in.
What that adds up to for a household is worth stating plainly. Two funded state road projects are aimed at a city of about 2,257 people, and both of them are on the western side of it, which is also the side with the closed park and the thinner traffic. If you are weighing an address out that way, the honest picture is a quiet road now with approved work on the calendar somewhere, and no published date for when the cones arrive.
The eastern side is the reverse. The busy end of 12th Street is not in the approved widening at all, so the address with the most traffic today is the one least likely to be disturbed by roadworks. That is not the intuition most buyers arrive with, and it is the kind of thing worth knowing before you decide which end of a small city you want to live on.
Announced is not built. A project with money attached in a state program is a real commitment and it is not a construction schedule. The transport department's own traffic site is where closures and lane restrictions appear, and it is the only source worth checking in the week you actually need to know.
The widening limits in general circulation are wrong, and they point at the wrong end of town. The Utah Transportation Commission's minutes of 27 June 2025 record the State Route 39 project limits as 4700 West to State Route 126. The version repeated elsewhere describes the work as running between the Weber River and 4700 West. State Route 126 is 1900 West, which sits roughly a mile and a half west of where 12th Street crosses the river, so the two descriptions cover different stretches of road. Anybody weighing a parcel near the river on the strength of the second version is planning around construction that the approved project does not reach. Use the Commission's limits.
The streets the city owns
Two lane, twenty five miles an hour, and one of them turns into a parade route.
Underneath the two state routes the city runs its own small network, and the one worth knowing is 1200 West. It is a city street rather than a state route, signed at twenty five miles an hour and carrying traffic in the low thousands. It runs south from 12th Street past Marriott Park, and on the Fourth of July it becomes the parade route, which the city publishes simply as the parade beginning at half past ten on 1200 West.
That combination is the nicest thing about the road layout here. A city small enough that its main event happens on an ordinary residential street, at a speed limit low enough that closing it for a morning is not a logistical problem, with the park that hosts everything else on the same street. One address covers the whole Fourth of July, and the reason is the street.
The other city street worth naming is 250 North on the western side, which runs to Slaterville Park and meets State Route 126 at the junction the Commission funded in June 2025. Between them, 1200 West and 250 North are where most of what this city does actually happens, and neither of them carries a route shield.
Where the city ends
Four neighbours, one county gap, and a boundary that runs down the middle of a highway.
The seams here are unusually easy to describe, because most of them follow roads. On 12th Street nearest Ogden, the centreline is the city line, with Marriott-Slaterville north and Ogden south. Head west along the same road and the city gives out at about 4200 West into unincorporated Weber County, which is county ground rather than another city and is billed and policed accordingly.
On 1900 West the frontage changes hands twice within a few miles. Going north, West Haven holds the road up to about the latitude of 12th Street, Marriott-Slaterville takes it from there through the northern third of its Weber County run, and Farr West picks it up above that before the ground turns county again. That order is worth carrying, because three of those four are small cities with similar looking farm frontage and none of them shares a postcode boundary with its city limit.
The most useful seam of all is the one at the north east corner. The Golden Spike Event Center at 1000 North 1200 West is Ogden's parcel, and this city's line runs immediately west and north of it, close enough that a street corner beside the site falls inside Marriott-Slaterville while the site itself does not. Farr West starts a third of a mile further north again. So the fairgrounds are a neighbour you can walk to and not an amenity this city owns, and no page should say otherwise.
Living with it
Drive the parcel twice, and let the traffic count decide which end you want.
The practical advice on roads in this city is short enough to fit in a sentence: drive the address at half past seven in the morning and again at six in the evening before you decide anything. A four fold difference in traffic across a city seven miles across is unusual, it is not visible from a listing photograph, and it is the single biggest variable in what an address here is like to live at.
The second thing is that the quiet end is the one with the approved roadwork on it and the busy end is not. That is counterintuitive and it is what the Commission's own limits say. Neither project has a published start date, so this is a thing to ask about at closing rather than a thing to fear, but a buyer out toward 4700 West should know that a reconstruct and widen job has money attached to the road at the end of the drive.
The third is that everything else about getting around here is a car. No fixed route bus service to this city was published either way by the transit authority when this was written, the nearest commuter rail platforms are in other cities, and the street network is farm roads with a state highway through the middle. That is the trade the whole place is built on, and the page on moving here sets out the rest of it.
A road that carries thirty six thousand vehicles at one end of a city and eight thousand at the other is not one road. It is two places with the same name.
What this page deliberately leaves out
- A start date for either approved project. The transport department publishes none in a form worth quoting, and a date invented here would be worse than no date at all.
- State Route 134. It does not touch this city; every mile of it runs through West Haven, Plain City, North Ogden or Pleasant View.
- The railway grade separation project on 12th Street. The Commission's own minutes place that one in Ogden, and it is Ogden's to describe.
- Ogden's address grid and how a neighbouring city reads it, which Harrisville's road page already works through for the north end of the county.
- Anything about who works at any building on or near this corridor. The buildings, their parcels and their traffic are describable; the people in them are not this site's subject.
Keep reading
Four more pages on this city, and the question each one answers.
The list
The 5 best things to do
A river path, two playgrounds, an evening market and an archive you can read at home.
Read the guideThe river
The Weber River and River Cove
One address, one car park, four names for the same trail, and no restroom for miles.
Read the guideThe year
The year in Marriott-Slaterville
A race at seven, a parade at half past ten, and a market that moved to Friday evenings.
Read the guideMoving here
Moving to Marriott-Slaterville
One bill for four utilities, five schools inside the line, and no city police force.
Read the guideThe whole set
Marriott-Slaterville, in full
Seven square miles, four park sites, one river access and five schools, on a city of 2,257.
Open the companionQuick answers
The roads, answered.
It is State Route 39, and it is the city's spine, running east and west across the whole width of the place from the Ogden line out to unincorporated Weber County at about 4200 West. Further west, past 1900 West, the signs start calling it 1200 South. On the stretch nearest Ogden the centreline of the road is the city boundary itself, with Marriott-Slaterville on the north kerb and Ogden on the south, which is why buildings on opposite sides of the same street sit in different cities.
It depends entirely which end you are standing at, and the difference is a factor of four. The transport department counts 36,000 vehicles a day where State Route 39 crosses the Ogden line, 32,000 a mile west of that with the city on both kerbs, and 8,300 out where the road is signed 1200 South. Those readings date from 2017, so they are nine years old; the shape of the curve is the durable fact rather than any single number.
The Utah Transportation Commission approved a reconstruct and widen project on State Route 39 at its meeting of 27 June 2025, with $21,000,000 attached and limits recorded as 4700 West to State Route 126. That is the western two thirds of the road through this city. No start date is published by the transport department in a form worth relying on, so treat it as funded rather than scheduled, and check the department's own traffic site for closures in the week you need to know.
From 4700 West east to State Route 126, which is 1900 West. That is the limit the Transportation Commission recorded in its own minutes on 27 June 2025. It is worth being precise about because a different description circulates, putting the work between the Weber River and 4700 West. State Route 126 sits roughly a mile and a half west of where 12th Street crosses the river, so the two descriptions cover different stretches and only one of them is the Commission's.
A new project at State Route 126 and 250 North, with $2,600,000 attached, approved in the same Transportation Commission meeting on 27 June 2025. That junction sits at the head of Slaterville Park's own street on the western side of the city, and it is worth reading alongside the construction closure currently sitting on that park. As with the widening, the money is approved and no start date is published.
Two. State Route 39, which is 12th Street, runs east and west across the city. State Route 126, which is 1900 West, runs north and south along the eastern side, and this city holds roughly the northern third of that route's Weber County length, carrying about 18,000 vehicles a day against 25,000 through West Haven and 24,000 through Roy. State Route 134 does not touch this city at all; every mile of it runs through West Haven, Plain City, North Ogden or Pleasant View.
On four sides, and mostly along roads. Ogden is east, with the centreline of 12th Street forming the boundary for a stretch. West Haven is south along 1900 West, up to about the latitude of 12th Street. Farr West is north along the same route. And west along 12th Street the city gives out at about 4200 West into unincorporated Weber County. The Golden Spike Event Center at the north east corner is Ogden's parcel, with this city's line running immediately west and north of it.
No fixed route service to this city was published either way by the transit authority when this page was written, and the city's own pages describe none. The nearest commuter rail platforms are in other cities. Getting around here is a car, which is the ordinary arrangement for a farm city of about 2,257 people on the edge of a metropolitan area, and it is worth building into any calculation about a second vehicle before an offer.
No. Ogden-Hinckley Airport is Ogden's, a 218 acre site at 3909 Airport Road inside the Ogden city line, and it sits about seven miles south of this city's offices by road, well south of the city's southern line. It is a short drive rather than a neighbour, and nothing about it touches this city's edge, so a description implying adjacency is wrong even though the drive time is genuinely small.
One road, and two very different places to live on it.
Roads are where this city's differences actually show up. A parcel at the eastern end sits on a busy arterial with an industrial neighbour across the road in another city. A parcel at the western end sits on a two lane road through hay fields with a funded state widening somewhere on the calendar. Both are Marriott-Slaterville, both carry the same postcode, and nothing in a listing tells you which one you are looking at. Add the flood map question on any ground running toward the river, the zoning tier, and which special districts bill the address, and you have the whole homework list. Tell me what you are weighing and I will introduce you to a Weber and Morgan partner agent who works this side of the valley, and stay on the file for the financing side.
Referral disclosure. Outside Southern Utah, I connect home sellers and buyers with partner agents I trust in their area. If you choose to work with an agent I refer, that agent's brokerage pays my brokerage (Real Broker, LLC) a referral fee. The fee comes out of the agent's compensation; it is not an added cost to you. You are always free to choose any agent you wish, and using a referred agent is never required.