corridor design

[Anonymous]

I post this issue before but I did not get any answers so here it goes again because I am having many projects with this kind of issue when connecting roads are not perpendicular.

I know how to use targeting in order to create the yellow edge of the corridor on left but how do I trim the right side of the connecting road so it stops at the red line?

I usually get overlapping surfaces which I trim later.     

[tcorey · Accepted solution]

Look into Offset Alignments with Offset Profiles.  You can make offset alignment a baseline in your corridor. It’s profile is controlled by crossslope from centerline, so you can run an assembly along this baseline. You can then use regions to let this line merge another alignment. Using this method, centerline and offsets can have different region controls, overcoming the problem of non-square intersections. 

Using this method, you will find it difficult to build accurate corridor surfaces using Link data type. You can make accurate surfaces using Feature Line data type. Use unique point codes. 

[Joe-Bouza]

I concur with Tim And also wonder why the intersection  can’t be done traditionally with smal return radii?

the wizard is good for helping with those control lines. Personally, I don’t let the wizard build the corridor. I’m much more confident  with my own assemblies and profiles . Then build my own regions and baseline addition. 

The wizard ameliorates the baseline creation somewhat 

[Anonymous]

Thanks for replying!

Did you take a look at the pic I posted?

Any tips how I go about making that part of junction?

The main road is already there!

I post the pic again!

[Joe-Bouza · Accepted solution]

Hello @Anonymous  you have to look at the intersection wizard as helping hands and not the be all and end all to intersection design. Prior to the introduction of the intersection wizard the user would create all the baselines, offset targets and profiles. All the wizard does is create those geometries for you. 

When I look at your geometry I see control lines roughly like this:

1. the road on the left is primary and the right is secondary

2. brown lines center line alignment and profiles to lock

3. green lines  width offsets and profiles

4. yellow "return" alignments and profiles 

You can let the wizard create these or create them yourself. I rely on the wizard for one thing; locking the center line alignments and profiles

 

[M_c3d]

I agree with @Joe-Bouza I've done many intersections like this that have worked without any problem.