Show us Your Interchanges!

[matias93 7,535]

1 hour ago, simmering said:

I often end up with diagonal highways. I should avoid them as it is very difficult to create intersections.

The challenge is even bigger with elevated highways, as there are only L0 diagonal ramps within NAM. So I had to bring the terrain up to L1.

And I needed space, which made it hard to connect the ramps to the crossing central avenue. So I created a tunnel for the that avenue. The ramps then connect instead to the avenues on both sides.

Lastly, a road tunnel creates a link between the avenues with ramp access.

There are ramps for elevated highways, you only need to override a FLEXramp with the desired height of main highway and it will convert accordingly.

That said, your solution is very elegant, proving that restrictions are what make possible to imagine some of the best designs.

[simmering 2,658]

1 hour ago, matias93 said:

There are ramps for elevated highways, you only need to override a FLEXramp with the desired height of main highway and it will convert accordingly.

That said, your solution is very elegant, proving that restrictions are what make possible to imagine some of the best designs.

I am glad you like my design.

As for the FLEXramps, I don't think there are any diagonal ones for L1 and L2. I raised it last year and they were added to the wish list, but I don't think they made it into the latest NAM version.

[matias93 7,535]

2 hours ago, simmering said:

I am glad you like my design.

As for the FLEXramps, I don't think there are any diagonal ones for L1 and L2. I raised it last year and they were added to the wish list, but I don't think they made it into the latest NAM version.

you're right, there aren't!

[Lucario Boricua 7,029]

One thing I do ask all players requesting extra functionality for the RealHighway specifically is to consider that the Network Addon Mod is a lot more stuff than just the RealHighway. Beyond the usual reminder that the NAM modding is a volunteer effort free-of-charge and free of fixed timelines, I want everyone to consider that we also want to balance development of different features of the mod. If all we do is RHW this, RHW that RHW everything, then what's the point of the other networks if they're also not getting a fair share of attention?

 

Back on topic, presenting a tricky interchange build from the city of Guanabacoa, upgraded a cloverleaf interchange into a cloverstack! With minimal use of eminent domain and preserving the original geometry of the freeways themselves!

Spoiler

Started as a diagonal trumpet, during much simpler times...

 

And then was upgraded as a cloverleaf as the city grew! Had to use some clever trickery to fit the whole thing in this awkward position.

 

Don't be deceived by its apparent simplicity! This was an especially demanding build when considering the creativity, trial and error and careful revisions to get this final layout.

 

As fantastic as it is, it's not the busiest thoroughfare through town, that honor goes to the plain diamond interchange over two parallel one-way roads close to the southern city border (upper left of view).

 

[simmering 2,658]

8 hours ago, Lucario Boricua said:

One thing I do ask all players requesting extra functionality for the RealHighway specifically is to consider that the Network Addon Mod is a lot more stuff than just the RealHighway.

I wasn't requesting anything. In this thread I stated a fact (that there are no diagonal ramps for L1 and L2) and added the information that I already suggested them. And since this thread is about interchanges, NAM request about e.g. canals are not likely to come up, are they?

8 hours ago, Lucario Boricua said:

Beyond the usual reminder that the NAM modding is a volunteer effort free-of-charge and free of fixed timelines,

I have the utmost respect and appreciation for the NAM team's work. If you read my post in the suggestion thread, you will see I merely asked if the ramps are possible. And mentioning it here was meant as a piece of information and not as an expression of impatience.

8 hours ago, Lucario Boricua said:

I want everyone to consider that we also want to balance development of different features of the mod. If all we do is RHW this, RHW that RHW everything, then what's the point of the other networks if they're also not getting a fair share of attention?

Is this the right audience for that remark? Shouldn't you be discussing priorities within the NAM team? When one asks for suggestions, one generally doesn't get to decide what those suggestions will be. But you could channel them. If there are too many RHW suggestions, say that the RHW list is closed. Even better, close the general NAM suggestion thread and open specific ones for the areas or networks you want to emphasize. After all many NAM team members are also Simtropolis moderators. You guys have all the power.

[Tarkus 6,932]

Just to step in and clear up any misunderstanding:

• There are indeed no Elevated Diagonal Ramp Interfaces in the RHW system at present, and that did clearly have an impact on the setup shown in simmering's image, and on diagonal stretches of the elevated RHW networks in general.  That's simply a statement of fact, and the link to the earlier request provides some insight as to the state of affairs.  All completely fair stuff.  
• Lucario Boricua is simply giving an overview of some of the internal discussions the NAM Team has had over a period of time, to provide information as to somewhat near-term developmental plans and priorities.  Aside from inclusion in the giant bridge expansion in NAM 49, there really hasn't been much activity on the RHW front since NAM 47, at least directly.  Some recent developments have provided us with opportunities to make substantial progress on certain other features in the NAM ecosystem, and we're availing ourselves of those.  NAM 50 only tangentially adds new content to the RHW, alongside some general improvements and streamlining that will improve its stability and usability.
• I've tentatively penciled in some RHW-related development plans for after NAM 50, so stay tuned on that front.  (Unless there's some breaking development in our model-making pipeline before then, that probably won't entail Elevated Diagonal Ramp Interfaces, unfortunately . . . they're actually very high on my priority list, as they're the one legitimate leg up that the EMHW has on the elevated RHW networks, but the opportunity and resources have to be there for it to jump up in the queue.)
• While we might respond and provide context as to the feasibility and likelihood of fulfilling a request from the userbase (whether it be in the NAM: Requests thread, one of our development threads, or really anywhere), requests for features in any part of the NAM remain welcome, even if it's for an area that hasn't been a recent area of emphasis.
• With all the recent emphasis on "SimCity 4 Lore", prompted by the /r/simcity4 thread and Haljackey's thorough expansion upon it here at ST, there's some interesting lore and history as to why the RHW may seem at times to get all the attention.  Might have to go into more detail on that history at some point soon, probably over on SimTarkus.

Now, I have an interchange tax (I guess "toll" would be more accurate) to pay:

Weird Y-interchange thing with frontage roads that I built quite some time ago, and am probably going to rework a bit.  It's actually out of the 20 or so updates worth of material I have for potential future Tarkusian Cities updates that I just haven't had the time/energy to do anything with yet.

-Tarkus

 

[bhmantan 2,051]

the "as-long-as-it-works" interchange

made a commentary build video for it too, here

 

[simmering 2,658]

On 9/15/2025 at 5:52 PM, bhmantan said:

 

Could you share information about those catenaries? I looked at your mod list and could not find them.

[bhmantan 2,051]

48 minutes ago, simmering said:

Could you share information about those catenaries? I looked at your mod list and could not find them.

I think I put it on another list, but I forgot which one lol

you can get it here, on manga rivotra's MD: https://www.sc4devotion.com/forums/index.php?topic=16991.231

check "Update 24" section for the detailed instructions

[sunshinelimited 10]

A single point interchange at the corner of city's belt highway

IMG_0955.heic

[CorinaMarie 29,655]

16 minutes ago, sunshinelimited said:

IMG_0955.heic

Uhm, what sort of file format is that?

[Null 45 3,048]

2 hours ago, CorinaMarie said:

Uhm, what sort of file format is that?

Based on the file extension it would be a HEIC image, Apple and other smartphone vendors use that format for camera pictures. But the attachment has been deleted.

[sunshinelimited 10]

On 10/3/2025 at 6:13 PM, CorinaMarie said:

Uhm, what sort of file format is that?

Ah...
It was my first post, so I'm not so acquainted with the rules....

[CorinaMarie 29,655]

8 hours ago, sunshinelimited said:

Ah...
It was my first post, so I'm not so acquainted with the rules....

No worries. I noticed in your 2nd post you used jpg so all is well.  

(You can scroll up to your post above and edit in a new pic.)

[Haljackey 17,330]

A mini bypass routing project has turned into a full blown freeway. Here's some interchanges on it before the city tiles develop (and parts become hard to see with towers in the way)

This parclo got beefed up to support a RHW-12S to the south

The 12S continues to a new 3-way interchange

Zoom in.

The new route heads east. I was able to fit in a odd looking DDI here- the city tile edge didn't let me use FARHW on the east side.

---

In the next city tile, a folded diamond

Across the bridge, a odd 3-way connection

As well as my first use of a 3 tile road prefab interchange, and a half diamond.

As the route curves into the wilderness, a couple partial interchanges meet it.

Before heading back into a area to be developed with a prefab on a slope- this was difficult to get right with the terrain

From here the bypass route will head north a bit to meet up with another freeway. That route has yet to be finalized and hits the end of the present northern reaches of the urbanized / urbanizing area in my region.

---

One bonus pic- I made my first MHW in 15 years. Elevated one of the roads to bypass a complicated roundabout, and added a couple elevated MHW ramps because why not. 

MHW is currently the only supported network that can go above avenue roundabouts, so it was my only choice  

[kschmidt 6,164]

Awesome, yet still lot´s of zoning and content to go but infrastructure like this prepared as the original souther part of the region ! Wonder where beuyond the big cities there will be a more low rural light area as masive cities like these far beyond can´t reach ? Master RHW it´s a hard way to return to more basic infrastructure and ways outside city life !

Sincerely yours,

Kschmidt

[Haljackey 17,330]

On 10/7/2025 at 1:46 AM, kschmidt said:

Awesome, yet still lot´s of zoning and content to go but infrastructure like this prepared as the original souther part of the region ! Wonder where beuyond the big cities there will be a more low rural light area as masive cities like these far beyond can´t reach ? Master RHW it´s a hard way to return to more basic infrastructure and ways outside city life !

Sincerely yours,

Kschmidt

Haha, yes I like making complicated chaos. I need high density development nearby so these get the use they are designed for. 

There's still plenty of room in my region to go more suburban further out. I am working my way from medium density to low in the south, but staying dense to the North for a bit longer.

-

On 10/6/2025 at 9:10 PM, Haljackey said:

From here the bypass route will head north a bit to meet up with another freeway. That route has yet to be finalized and hits the end of the present northern reaches of the urbanized / urbanizing area in my region.

...And I am now working on that freeway- finalizing it's design with a couple unique interchanges to showcase

The bypass freeway meets at a trumpet containing a elongated EB to SB ramp to descend from the bridge. My slope mod is restrictive.

-

To the NW, the curve straightens out at a pretty chaotic interchange due to the railway junction nearby

Note the ramps used to connect to the avenues and roundabouts as well

I'm still finding ways to challenge myself in 2025. Been playing 22 years and the game stays relevant and enjoyable for me to play.

 

[Haljackey 17,330]

A major interchange upgrade to support further growth to the north.

The junction was designed with expansion in mind.

Before:

After:

---

The northern approach

To

-

The eastern approach

To

---

The southern approach

To

--

Central stack

To

---

Zoom in of the railway/BTM complexity

To

---

Further expansion is possible as well if warranted, such as the west side and widening the E-W highway from 4 to 6 lanes through the junction.

  Edited October 30, 2025 by CaptCity  
Added a modified image for display on Home page.

[Haljackey 17,330]

On 10/30/2025 at 12:13 AM, Haljackey said:

Further expansion is possible as well if warranted, such as the west side and widening the E-W highway from 4 to 6 lanes through the junction.

 

...and I wasn't satisfied. Just one more lane, right?

E-W route widened to RHW 6S

-

North ramp terminal

-

West ramp terminal

-

East ramp terminal

-

South ramp terminal

- 

Zoom out

- 

Compare to- OG build

[Transshipment Envoy 4]

My first stack interchange with RHW.

[Haljackey 17,330]

Extreme complexity

Designed to handle heavy connecting traffic to a large station

Sometimes I have no idea what I'm doing.

[Lucario Boricua 7,029]

Guamaní's growth dominating the western coast of the Kingdom of Borike has reached a critical point, such that the city itself no longer has room for vast numbers of incoming residents! As such, its outer suburbs have started developing, and they need to commute into the mighty metropolis! At the center of this dramatic change is the ferocious four-level stack interchange better known as the QuadStackatops! Commuters coming from the west side keep crowding these routes, warranting the widening of the freeway arriving from Casey and causing the debut of the first set of two-lane flyovers and three-lane ramps for my stack interchanges in the region!

Transit commuters have not been forgotten, as the city has also been developing a robust metro network and intercity railway links to the suburbs located north and south , and these routes are heavily utilized, too!

 

Before:

 

After:

[EastChapel 115]

Not the most complicated interchange out there, but by far and a way the weirdest one I've put together.

[Haljackey 17,330]

Making the river crossing more useful

 

Added a half interchange to the other side

This gives you a exit much sooner in the tile

  Edited February 27 by CaptCity  
Added a modified image for homepage display.

[Lab Rat 14]

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[EffTheGrid 3,677]

Welcome back, everyone!

A state highway diverges from its alignment to approach a bridge.

 

[Haljackey 17,330]

I made a huge UDI vid showcasing a lot of new interchanges I built during the site outage- check it out here (starts with a cool mountain road)

 

  Edited May 30 by CaptCity  
A modified image added for display on the Homepage.

[EffTheGrid 3,677]

2 urban boulevards cross where the city ends and the suburbs begin

[Haljackey 17,330]

Couple new interchanges

Route upgrade-

 

---

 

Rough lines to finished product

 

  Edited June 7 by CaptCity  
Added a modified image for homepage display.

[Haljackey 17,330]

Two new 3-way interchanges as I continue to route highways in my mega region

Bridge connection

-

Diagonal link up