Section 9: T-Bone Interchanges
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F4%2F41%2FAs-gruszka.svg%2F120px-As-gruszka.svg.png&hash=0e23424505289a5aa348b06a980be5a6757752ba)
A T-bone interchange is essentially a compacted directional-T interchange with sharper turns and a lower capacity, built when there is insufficient land or funds to build a directional-T. Its two flyover/flyunder ramps contract together after passing over the through highway, but then they split into two segments, resembling the bone in a T-bone steak.
You should recognize this design from the Maxis Highway 3-point interchange. These junctions are based on the T-bone design and show how compact they can be. This guide will show how to build them with a bit more realism with the RHW.
9.1 Basic T-Bone Interchange (http://sc4devotion.com/forums/index.php?topic=14068.msg422935#msg422935)
Back to the Table of Contents (http://sc4devotion.com/forums/index.php?topic=14057.0)
Section 9.1: Basic T-Bone Interchange (Created by Rionescu)
First lay your two highways, and don't worry about where the ending highway ends.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot241.jpg&hash=7bee6219e0af1e46980fecd03bed8195a6f7b02d)
Lay one curved and two straight ground<->elevated transition pieces like so, paying attention to the yellow and white lines.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot242.jpg&hash=a8ad4c1aaa9a900f5f53b40ef64b6277b12b65c1)
Then plop a FlexFly A1 piece and another transition piece like so.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot243.jpg&hash=7069e973242fc4004ae8bd97ac9f83101425cd12)
Bulldoze a bit of the ending highway, and drag the MIS so they line up with the highway.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot244.jpg&hash=d79219c6b04d6462e360fb68065f1a4b36fdf9c7)
Plop two RHW-4/MIS Splitters to connect the ramps to the ending highway.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot245.jpg&hash=69ac64241d1d479cb5660d866cca05ca317827d5)
Extend the extra MIS stubs to the other highway and connect it using B-ramps.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot246.jpg&hash=bb08aa4c93a8bc6ac4a2c5ecdeebdf39148ceb93)
Connect the other 3 ramps, in a similar fashion.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot248.jpg&hash=3c1dfccb03e05ce93fae157e6cf1ef71127b0e1d)
And your done, easy as that. This is what you should have now.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot249.jpg&hash=a35b4145290d7344c97d9e6e7f5fdc83ca410ca9)
And using curves, FAMIS, C- and D-ramps, and cosmetic pieces, you can get something like this.
(https://www.sc4devotion.com/forums/proxy.php?request=http%3A%2F%2Fi904.photobucket.com%2Falbums%2Fac246%2FRionescu%2Fscreenshot240.jpg&hash=c6f198295734e7c1e995691bbf16ad526fa9c39f)
You could use any combination of FlexFly curves and curved transition pieces, depending on where you have space, but the one shown here is my favourite.